| Commit message (Collapse) | Author | Age |
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[ Upstream commit e5dcc0c3223c45c94100f05f28d8ef814db3d82c ]
rose_write_internal() uses a temp buffer of 100 bytes, but a manual
inspection showed that given arbitrary input, rose_create_facilities()
can fill up to 110 bytes.
Lets use a tailroom of 256 bytes for peace of mind, and remove
the bounce buffer : we can simply allocate a big enough skb
and adjust its length as needed.
syzbot report :
BUG: KASAN: stack-out-of-bounds in memcpy include/linux/string.h:352 [inline]
BUG: KASAN: stack-out-of-bounds in rose_create_facilities net/rose/rose_subr.c:521 [inline]
BUG: KASAN: stack-out-of-bounds in rose_write_internal+0x597/0x15d0 net/rose/rose_subr.c:116
Write of size 7 at addr ffff88808b1ffbef by task syz-executor.0/24854
CPU: 0 PID: 24854 Comm: syz-executor.0 Not tainted 5.0.0+ #97
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
print_address_description.cold+0x7c/0x20d mm/kasan/report.c:187
kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317
check_memory_region_inline mm/kasan/generic.c:185 [inline]
check_memory_region+0x123/0x190 mm/kasan/generic.c:191
memcpy+0x38/0x50 mm/kasan/common.c:131
memcpy include/linux/string.h:352 [inline]
rose_create_facilities net/rose/rose_subr.c:521 [inline]
rose_write_internal+0x597/0x15d0 net/rose/rose_subr.c:116
rose_connect+0x7cb/0x1510 net/rose/af_rose.c:826
__sys_connect+0x266/0x330 net/socket.c:1685
__do_sys_connect net/socket.c:1696 [inline]
__se_sys_connect net/socket.c:1693 [inline]
__x64_sys_connect+0x73/0xb0 net/socket.c:1693
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458079
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f47b8d9dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458079
RDX: 000000000000001c RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f47b8d9e6d4
R13: 00000000004be4a4 R14: 00000000004ceca8 R15: 00000000ffffffff
The buggy address belongs to the page:
page:ffffea00022c7fc0 count:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x1fffc0000000000()
raw: 01fffc0000000000 0000000000000000 ffffffff022c0101 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88808b1ffa80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88808b1ffb00: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 03
>ffff88808b1ffb80: f2 f2 00 00 00 00 00 00 00 00 00 00 00 00 04 f3
^
ffff88808b1ffc00: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
ffff88808b1ffc80: 00 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1 01 f2 01
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 398f0132c14754fcd03c1c4f8e7176d001ce8ea1 ]
Since commit fc62814d690c ("net/packet: fix 4gb buffer limit due to overflow check")
one can now allocate packet ring buffers >= UINT_MAX. However, syzkaller
found that that triggers a warning:
[ 21.100000] WARNING: CPU: 2 PID: 2075 at mm/page_alloc.c:4584 __alloc_pages_nod0
[ 21.101490] Modules linked in:
[ 21.101921] CPU: 2 PID: 2075 Comm: syz-executor.0 Not tainted 5.0.0 #146
[ 21.102784] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.5.1 01/01/2011
[ 21.103887] RIP: 0010:__alloc_pages_nodemask+0x2a0/0x630
[ 21.104640] Code: fe ff ff 65 48 8b 04 25 c0 de 01 00 48 05 90 0f 00 00 41 bd 01 00 00 00 48 89 44 24 48 e9 9c fe 3
[ 21.107121] RSP: 0018:ffff88805e1cf920 EFLAGS: 00010246
[ 21.107819] RAX: 0000000000000000 RBX: ffffffff85a488a0 RCX: 0000000000000000
[ 21.108753] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000000
[ 21.109699] RBP: 1ffff1100bc39f28 R08: ffffed100bcefb67 R09: ffffed100bcefb67
[ 21.110646] R10: 0000000000000001 R11: ffffed100bcefb66 R12: 000000000000000d
[ 21.111623] R13: 0000000000000000 R14: ffff88805e77d888 R15: 000000000000000d
[ 21.112552] FS: 00007f7c7de05700(0000) GS:ffff88806d100000(0000) knlGS:0000000000000000
[ 21.113612] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 21.114405] CR2: 000000000065c000 CR3: 000000005e58e006 CR4: 00000000001606e0
[ 21.115367] Call Trace:
[ 21.115705] ? __alloc_pages_slowpath+0x21c0/0x21c0
[ 21.116362] alloc_pages_current+0xac/0x1e0
[ 21.116923] kmalloc_order+0x18/0x70
[ 21.117393] kmalloc_order_trace+0x18/0x110
[ 21.117949] packet_set_ring+0x9d5/0x1770
[ 21.118524] ? packet_rcv_spkt+0x440/0x440
[ 21.119094] ? lock_downgrade+0x620/0x620
[ 21.119646] ? __might_fault+0x177/0x1b0
[ 21.120177] packet_setsockopt+0x981/0x2940
[ 21.120753] ? __fget+0x2fb/0x4b0
[ 21.121209] ? packet_release+0xab0/0xab0
[ 21.121740] ? sock_has_perm+0x1cd/0x260
[ 21.122297] ? selinux_secmark_relabel_packet+0xd0/0xd0
[ 21.123013] ? __fget+0x324/0x4b0
[ 21.123451] ? selinux_netlbl_socket_setsockopt+0x101/0x320
[ 21.124186] ? selinux_netlbl_sock_rcv_skb+0x3a0/0x3a0
[ 21.124908] ? __lock_acquire+0x529/0x3200
[ 21.125453] ? selinux_socket_setsockopt+0x5d/0x70
[ 21.126075] ? __sys_setsockopt+0x131/0x210
[ 21.126533] ? packet_release+0xab0/0xab0
[ 21.127004] __sys_setsockopt+0x131/0x210
[ 21.127449] ? kernel_accept+0x2f0/0x2f0
[ 21.127911] ? ret_from_fork+0x8/0x50
[ 21.128313] ? do_raw_spin_lock+0x11b/0x280
[ 21.128800] __x64_sys_setsockopt+0xba/0x150
[ 21.129271] ? lockdep_hardirqs_on+0x37f/0x560
[ 21.129769] do_syscall_64+0x9f/0x450
[ 21.130182] entry_SYSCALL_64_after_hwframe+0x49/0xbe
We should allocate with __GFP_NOWARN to handle this.
Cc: Kal Conley <kal.conley@dectris.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Fixes: fc62814d690c ("net/packet: fix 4gb buffer limit due to overflow check")
Signed-off-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit e0aa67709f89d08c8d8e5bdd9e0b649df61d0090 ]
When a dual stack dccp listener accepts an ipv4 flow,
it should not attempt to use an ipv6 header or
inet6_iif() helper.
Fixes: 3df80d9320bc ("[DCCP]: Introduce DCCPv6")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 4ef8c1c93f848e360754f10eb2e7134c872b6597 ]
Ilan reported that sometimes nl80211 messages weren't working if
the frames being transported got very large, which was really a
problem for userspace-to-kernel messages, but prompted me to look
at the code.
Upon review, I found various places where variable-length data is
transported in an nl80211 message but the message isn't allocated
taking that into account. This shouldn't cause any problems since
the frames aren't really that long, apart in one place where two
(possibly very long frames) might not fit.
Fix all the places (that I found) that get variable length data
from the driver and put it into a message to take the length of
the variable data into account. The 100 there is just a safe
constant for the remaining message overhead (it's usually around
50 for most messages.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit dcb94b88c09ce82a80e188d49bcffdc83ba215a6 ]
IPv6 ping socket error handler doesn't correctly convert the new 32 bit
mtu to host endianness before using.
Cc: Lorenzo Colitti <lorenzo@google.com>
Fixes: 6d0bfe22611602f ("net: ipv6: Add IPv6 support to the ping socket.")
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b4201cc4fc6e1c57d6d306b1f787865043d60129 ]
This fixes:
net/mac80211/mesh_hwmp.c:603:26: warning: ‘target_metric’ may be used uninitialized in this function
target_metric is only consumed when reply = true so no bug exists here,
but not all versions of gcc realize it. Initialize to 0 to remove the
warning.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 7c1306723ee916ea9f1fa7d9e4c7a6d029ca7aaf ]
Lorenzo reported that we could not properly find v4mapped sockets
in inet_diag_find_one_icsk(). This patch fixes the issue.
Reported-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 7c9cbd0b5e38a1672fcd137894ace3b042dfbf69 upstream.
The function l2cap_get_conf_opt will return L2CAP_CONF_OPT_SIZE + opt->len
as length value. The opt->len however is in control over the remote user
and can be used by an attacker to gain access beyond the bounds of the
actual packet.
To prevent any potential leak of heap memory, it is enough to check that
the resulting len calculation after calling l2cap_get_conf_opt is not
below zero. A well formed packet will always return >= 0 here and will
end with the length value being zero after the last option has been
parsed. In case of malformed packets messing with the opt->len field the
length value will become negative. If that is the case, then just abort
and ignore the option.
In case an attacker uses a too short opt->len value, then garbage will
be parsed, but that is protected by the unknown option handling and also
the option parameter size checks.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit af3d5d1c87664a4f150fcf3534c6567cb19909b0 upstream.
When doing option parsing for standard type values of 1, 2 or 4 octets,
the value is converted directly into a variable instead of a pointer. To
avoid being tricked into being a pointer, check that for these option
types that sizes actually match. In L2CAP every option is fixed size and
thus it is prudent anyway to ensure that the remote side sends us the
right option size along with option paramters.
If the option size is not matching the option type, then that option is
silently ignored. It is a protocol violation and instead of trying to
give the remote attacker any further hints just pretend that option is
not present and proceed with the default values. Implementation
following the specification and its qualification procedures will always
use the correct size and thus not being impacted here.
To keep the code readable and consistent accross all options, a few
cosmetic changes were also required.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5ea8ea2cb7f1d0db15762c9b0bb9e7330425a071 upstream.
Per listen(fd, backlog) rules, there is really no point accepting a SYN,
sending a SYNACK, and dropping the following ACK packet if accept queue
is full, because application is not draining accept queue fast enough.
This behavior is fooling TCP clients that believe they established a
flow, while there is nothing at server side. They might then send about
10 MSS (if using IW10) that will be dropped anyway while server is under
stress.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 9060cb719e61 ("net: crypto set sk to NULL when af_alg_release.")
fixed a use-after-free in sockfs_setattr() when an AF_ALG socket is
closed concurrently with fchownat(). However, it ignored that many
other proto_ops::release() methods don't set sock->sk to NULL and
therefore allow the same use-after-free:
- base_sock_release
- bnep_sock_release
- cmtp_sock_release
- data_sock_release
- dn_release
- hci_sock_release
- hidp_sock_release
- iucv_sock_release
- l2cap_sock_release
- llcp_sock_release
- llc_ui_release
- rawsock_release
- rfcomm_sock_release
- sco_sock_release
- svc_release
- vcc_release
- x25_release
Rather than fixing all these and relying on every socket type to get
this right forever, just make __sock_release() set sock->sk to NULL
itself after calling proto_ops::release().
Reproducer that produces the KASAN splat when any of these socket types
are configured into the kernel:
#include <pthread.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <unistd.h>
pthread_t t;
volatile int fd;
void *close_thread(void *arg)
{
for (;;) {
usleep(rand() % 100);
close(fd);
}
}
int main()
{
pthread_create(&t, NULL, close_thread, NULL);
for (;;) {
fd = socket(rand() % 50, rand() % 11, 0);
fchownat(fd, "", 1000, 1000, 0x1000);
close(fd);
}
}
Fixes: 86741ec25462 ("net: core: Add a UID field to struct sock.")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit ff7b11aa481f682e0e9711abfeb7d03f5cd612bf)
Bug: 125367761
Test: used reproducer above
Change-Id: Ied4bbca5c7eb80c201fec6e0aabc95c24acc1b59
Signed-off-by: Eric Biggers <ebiggers@google.com>
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* refs/heads/tmp-0c3b8c4
Linux 4.4.177
KVM: X86: Fix residual mmio emulation request to userspace
KVM: nVMX: Ignore limit checks on VMX instructions using flat segments
KVM: nVMX: Sign extend displacements of VMX instr's mem operands
drm/radeon/evergreen_cs: fix missing break in switch statement
media: uvcvideo: Avoid NULL pointer dereference at the end of streaming
rcu: Do RCU GP kthread self-wakeup from softirq and interrupt
PM / wakeup: Rework wakeup source timer cancellation
nfsd: fix wrong check in write_v4_end_grace()
nfsd: fix memory corruption caused by readdir
NFS: Don't recoalesce on error in nfs_pageio_complete_mirror()
NFS: Fix an I/O request leakage in nfs_do_recoalesce
md: Fix failed allocation of md_register_thread
perf intel-pt: Fix overlap calculation for padding
perf auxtrace: Define auxtrace record alignment
perf intel-pt: Fix CYC timestamp calculation after OVF
NFS41: pop some layoutget errors to application
dm: fix to_sector() for 32bit
ARM: s3c24xx: Fix boolean expressions in osiris_dvs_notify
powerpc/83xx: Also save/restore SPRG4-7 during suspend
powerpc/powernv: Make opal log only readable by root
powerpc/wii: properly disable use of BATs when requested.
powerpc/32: Clear on-stack exception marker upon exception return
jbd2: fix compile warning when using JBUFFER_TRACE
jbd2: clear dirty flag when revoking a buffer from an older transaction
serial: 8250_pci: Have ACCES cards that use the four port Pericom PI7C9X7954 chip use the pci_pericom_setup()
serial: 8250_pci: Fix number of ports for ACCES serial cards
perf bench: Copy kernel files needed to build mem{cpy,set} x86_64 benchmarks
i2c: tegra: fix maximum transfer size
parport_pc: fix find_superio io compare code, should use equal test.
intel_th: Don't reference unassigned outputs
kernel/sysctl.c: add missing range check in do_proc_dointvec_minmax_conv
mm/vmalloc: fix size check for remap_vmalloc_range_partial()
dmaengine: usb-dmac: Make DMAC system sleep callbacks explicit
clk: ingenic: Fix round_rate misbehaving with non-integer dividers
ext2: Fix underflow in ext2_max_size()
ext4: fix crash during online resizing
cpufreq: pxa2xx: remove incorrect __init annotation
cpufreq: tegra124: add missing of_node_put()
crypto: pcbc - remove bogus memcpy()s with src == dest
Btrfs: fix corruption reading shared and compressed extents after hole punching
btrfs: ensure that a DUP or RAID1 block group has exactly two stripes
m68k: Add -ffreestanding to CFLAGS
scsi: target/iscsi: Avoid iscsit_release_commands_from_conn() deadlock
scsi: virtio_scsi: don't send sc payload with tmfs
s390/virtio: handle find on invalid queue gracefully
clocksource/drivers/exynos_mct: Clear timer interrupt when shutdown
clocksource/drivers/exynos_mct: Move one-shot check from tick clear to ISR
regulator: s2mpa01: Fix step values for some LDOs
regulator: s2mps11: Fix steps for buck7, buck8 and LDO35
ACPI / device_sysfs: Avoid OF modalias creation for removed device
tracing: Do not free iter->trace in fail path of tracing_open_pipe()
CIFS: Fix read after write for files with read caching
crypto: arm64/aes-ccm - fix logical bug in AAD MAC handling
stm class: Prevent division by zero
tmpfs: fix uninitialized return value in shmem_link
net: set static variable an initial value in atl2_probe()
mac80211_hwsim: propagate genlmsg_reply return code
phonet: fix building with clang
ARC: uacces: remove lp_start, lp_end from clobber list
tmpfs: fix link accounting when a tmpfile is linked in
arm64: Relax GIC version check during early boot
ASoC: topology: free created components in tplg load error
net: mv643xx_eth: disable clk on error path in mv643xx_eth_shared_probe()
pinctrl: meson: meson8b: fix the sdxc_a data 1..3 pins
net: systemport: Fix reception of BPDUs
scsi: libiscsi: Fix race between iscsi_xmit_task and iscsi_complete_task
assoc_array: Fix shortcut creation
ARM: 8824/1: fix a migrating irq bug when hotplug cpu
Input: st-keyscan - fix potential zalloc NULL dereference
i2c: cadence: Fix the hold bit setting
Input: matrix_keypad - use flush_delayed_work()
ARM: OMAP2+: Variable "reg" in function omap4_dsi_mux_pads() could be uninitialized
s390/dasd: fix using offset into zero size array error
gpu: ipu-v3: Fix CSI offsets for imx53
gpu: ipu-v3: Fix i.MX51 CSI control registers offset
crypto: ahash - fix another early termination in hash walk
crypto: caam - fixed handling of sg list
stm class: Fix an endless loop in channel allocation
ASoC: fsl_esai: fix register setting issue in RIGHT_J mode
9p/net: fix memory leak in p9_client_create
9p: use inode->i_lock to protect i_size_write() under 32-bit
media: videobuf2-v4l2: drop WARN_ON in vb2_warn_zero_bytesused()
It's wrong to add len to sector_nr in raid10 reshape twice
fs/9p: use fscache mutex rather than spinlock
ALSA: bebob: use more identical mod_alias for Saffire Pro 10 I/O against Liquid Saffire 56
tcp/dccp: remove reqsk_put() from inet_child_forget()
gro_cells: make sure device is up in gro_cells_receive()
net/hsr: fix possible crash in add_timer()
vxlan: Fix GRO cells race condition between receive and link delete
vxlan: test dev->flags & IFF_UP before calling gro_cells_receive()
ipvlan: disallow userns cap_net_admin to change global mode/flags
missing barriers in some of unix_sock ->addr and ->path accesses
net: Set rtm_table to RT_TABLE_COMPAT for ipv6 for tables > 255
mdio_bus: Fix use-after-free on device_register fails
net/x25: fix a race in x25_bind()
net/mlx4_core: Fix qp mtt size calculation
net/mlx4_core: Fix reset flow when in command polling mode
tcp: handle inet_csk_reqsk_queue_add() failures
route: set the deleted fnhe fnhe_daddr to 0 in ip_del_fnhe to fix a race
ravb: Decrease TxFIFO depth of Q3 and Q2 to one
pptp: dst_release sk_dst_cache in pptp_sock_destruct
net/x25: reset state in x25_connect()
net/x25: fix use-after-free in x25_device_event()
net: sit: fix UBSAN Undefined behaviour in check_6rd
net: hsr: fix memory leak in hsr_dev_finalize()
l2tp: fix infoleak in l2tp_ip6_recvmsg()
KEYS: restrict /proc/keys by credentials at open time
netfilter: nf_conntrack_tcp: Fix stack out of bounds when parsing TCP options
netfilter: nfnetlink_acct: validate NFACCT_FILTER parameters
netfilter: nfnetlink_log: just returns error for unknown command
netfilter: x_tables: enforce nul-terminated table name from getsockopt GET_ENTRIES
udplite: call proper backlog handlers
ARM: dts: exynos: Do not ignore real-world fuse values for thermal zone 0 on Exynos5420
Revert "x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls"
ARM: dts: exynos: Add minimal clkout parameters to Exynos3250 PMU
futex,rt_mutex: Restructure rt_mutex_finish_proxy_lock()
iscsi_ibft: Fix missing break in switch statement
Input: elan_i2c - add id for touchpad found in Lenovo s21e-20
Input: wacom_serial4 - add support for Wacom ArtPad II tablet
MIPS: Remove function size check in get_frame_info()
perf symbols: Filter out hidden symbols from labels
s390/qeth: fix use-after-free in error path
dmaengine: dmatest: Abort test in case of mapping error
dmaengine: at_xdmac: Fix wrongfull report of a channel as in use
irqchip/mmp: Only touch the PJ4 IRQ & FIQ bits on enable/disable
ARM: pxa: ssp: unneeded to free devm_ allocated data
autofs: fix error return in autofs_fill_super()
autofs: drop dentry reference only when it is never used
fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()
mm, memory_hotplug: test_pages_in_a_zone do not pass the end of zone
mm, memory_hotplug: is_mem_section_removable do not pass the end of a zone
x86_64: increase stack size for KASAN_EXTRA
x86/kexec: Don't setup EFI info if EFI runtime is not enabled
cifs: fix computation for MAX_SMB2_HDR_SIZE
platform/x86: Fix unmet dependency warning for SAMSUNG_Q10
scsi: libfc: free skb when receiving invalid flogi resp
nfs: Fix NULL pointer dereference of dev_name
gpio: vf610: Mask all GPIO interrupts
net: stmmac: dwmac-rk: fix error handling in rk_gmac_powerup()
net: hns: Fix wrong read accesses via Clause 45 MDIO protocol
net: altera_tse: fix msgdma_tx_completion on non-zero fill_level case
xtensa: SMP: limit number of possible CPUs by NR_CPUS
xtensa: SMP: mark each possible CPU as present
xtensa: smp_lx200_defconfig: fix vectors clash
xtensa: SMP: fix secondary CPU initialization
xtensa: SMP: fix ccount_timer_shutdown
iommu/amd: Fix IOMMU page flush when detach device from a domain
ipvs: Fix signed integer overflow when setsockopt timeout
IB/{hfi1, qib}: Fix WC.byte_len calculation for UD_SEND_WITH_IMM
perf tools: Handle TOPOLOGY headers with no CPU
vti4: Fix a ipip packet processing bug in 'IPCOMP' virtual tunnel
media: uvcvideo: Fix 'type' check leading to overflow
ip6mr: Do not call __IP6_INC_STATS() from preemptible context
net: dsa: mv88e6xxx: Fix u64 statistics
netlabel: fix out-of-bounds memory accesses
hugetlbfs: fix races and page leaks during migration
MIPS: irq: Allocate accurate order pages for irq stack
applicom: Fix potential Spectre v1 vulnerabilities
x86/CPU/AMD: Set the CPB bit unconditionally on F17h
net: phy: Micrel KSZ8061: link failure after cable connect
net: avoid use IPCB in cipso_v4_error
net: Add __icmp_send helper.
xen-netback: fix occasional leak of grant ref mappings under memory pressure
net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails
bnxt_en: Drop oversize TX packets to prevent errors.
team: Free BPF filter when unregistering netdev
sky2: Disable MSI on Dell Inspiron 1545 and Gateway P-79
net-sysfs: Fix mem leak in netdev_register_kobject
staging: lustre: fix buffer overflow of string buffer
isdn: isdn_tty: fix build warning of strncpy
ncpfs: fix build warning of strncpy
sockfs: getxattr: Fail with -EOPNOTSUPP for invalid attribute names
cpufreq: Use struct kobj_attribute instead of struct global_attr
USB: serial: ftdi_sio: add ID for Hjelmslund Electronics USB485
USB: serial: cp210x: add ID for Ingenico 3070
USB: serial: option: add Telit ME910 ECM composition
x86/uaccess: Don't leak the AC flag into __put_user() value evaluation
mm: enforce min addr even if capable() in expand_downwards()
mmc: spi: Fix card detection during probe
powerpc: Always initialize input array when calling epapr_hypercall()
KVM: arm/arm64: Fix MMIO emulation data handling
arm/arm64: KVM: Feed initialized memory to MMIO accesses
KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1
cfg80211: extend range deviation for DMG
mac80211: don't initiate TDLS connection if station is not associated to AP
ibmveth: Do not process frames after calling napi_reschedule
net: altera_tse: fix connect_local_phy error path
scsi: csiostor: fix NULL pointer dereference in csio_vport_set_state()
serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling
mac80211: fix miscounting of ttl-dropped frames
ARC: fix __ffs return value to avoid build warnings
ASoC: imx-audmux: change snprintf to scnprintf for possible overflow
ASoC: dapm: change snprintf to scnprintf for possible overflow
usb: gadget: Potential NULL dereference on allocation error
usb: dwc3: gadget: Fix the uninitialized link_state when udc starts
thermal: int340x_thermal: Fix a NULL vs IS_ERR() check
ALSA: compress: prevent potential divide by zero bugs
ASoC: Intel: Haswell/Broadwell: fix setting for .dynamic field
drm/msm: Unblock writer if reader closes file
scsi: libsas: Fix rphy phy_identifier for PHYs with end devices attached
libceph: handle an empty authorize reply
Revert "bridge: do not add port to router list when receives query with source 0.0.0.0"
ARCv2: Enable unaligned access in early ASM code
net/mlx4_en: Force CHECKSUM_NONE for short ethernet frames
sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach()
team: avoid complex list operations in team_nl_cmd_options_set()
net/packet: fix 4gb buffer limit due to overflow check
batman-adv: fix uninit-value in batadv_interface_tx()
KEYS: always initialize keyring_index_key::desc_len
KEYS: user: Align the payload buffer
RDMA/srp: Rework SCSI device reset handling
isdn: avm: Fix string plus integer warning from Clang
leds: lp5523: fix a missing check of return value of lp55xx_read
atm: he: fix sign-extension overflow on large shift
isdn: i4l: isdn_tty: Fix some concurrency double-free bugs
MIPS: jazz: fix 64bit build
scsi: isci: initialize shost fully before calling scsi_add_host()
scsi: qla4xxx: check return code of qla4xxx_copy_from_fwddb_param
MIPS: ath79: Enable OF serial ports in the default config
net: hns: Fix use after free identified by SLUB debug
mfd: mc13xxx: Fix a missing check of a register-read failure
mfd: wm5110: Add missing ASRC rate register
mfd: qcom_rpm: write fw_version to CTRL_REG
mfd: ab8500-core: Return zero in get_register_interruptible()
mfd: db8500-prcmu: Fix some section annotations
mfd: twl-core: Fix section annotations on {,un}protect_pm_master
mfd: ti_am335x_tscadc: Use PLATFORM_DEVID_AUTO while registering mfd cells
KEYS: allow reaching the keys quotas exactly
numa: change get_mempolicy() to use nr_node_ids instead of MAX_NUMNODES
ceph: avoid repeatedly adding inode to mdsc->snap_flush_list
Revert "ANDROID: arm: process: Add display of memory around registers when displaying regs."
ANDROID: mnt: Propagate remount correctly
ANDROID: cuttlefish_defconfig: Add support for AC97 audio
ANDROID: overlayfs: override_creds=off option bypass creator_cred
FROMGIT: binder: create node flag to request sender's security context
Conflicts:
arch/arm/kernel/irq.c
drivers/media/v4l2-core/videobuf2-v4l2.c
sound/core/compress_offload.c
Change-Id: I998f8d53b0c5b8a7102816034452b1779a3b69a3
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.177
ceph: avoid repeatedly adding inode to mdsc->snap_flush_list
numa: change get_mempolicy() to use nr_node_ids instead of MAX_NUMNODES
KEYS: allow reaching the keys quotas exactly
mfd: ti_am335x_tscadc: Use PLATFORM_DEVID_AUTO while registering mfd cells
mfd: twl-core: Fix section annotations on {,un}protect_pm_master
mfd: db8500-prcmu: Fix some section annotations
mfd: ab8500-core: Return zero in get_register_interruptible()
mfd: qcom_rpm: write fw_version to CTRL_REG
mfd: wm5110: Add missing ASRC rate register
mfd: mc13xxx: Fix a missing check of a register-read failure
net: hns: Fix use after free identified by SLUB debug
MIPS: ath79: Enable OF serial ports in the default config
scsi: qla4xxx: check return code of qla4xxx_copy_from_fwddb_param
scsi: isci: initialize shost fully before calling scsi_add_host()
MIPS: jazz: fix 64bit build
isdn: i4l: isdn_tty: Fix some concurrency double-free bugs
atm: he: fix sign-extension overflow on large shift
leds: lp5523: fix a missing check of return value of lp55xx_read
isdn: avm: Fix string plus integer warning from Clang
RDMA/srp: Rework SCSI device reset handling
KEYS: user: Align the payload buffer
KEYS: always initialize keyring_index_key::desc_len
batman-adv: fix uninit-value in batadv_interface_tx()
net/packet: fix 4gb buffer limit due to overflow check
team: avoid complex list operations in team_nl_cmd_options_set()
sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach()
net/mlx4_en: Force CHECKSUM_NONE for short ethernet frames
ARCv2: Enable unaligned access in early ASM code
Revert "bridge: do not add port to router list when receives query with source 0.0.0.0"
libceph: handle an empty authorize reply
scsi: libsas: Fix rphy phy_identifier for PHYs with end devices attached
drm/msm: Unblock writer if reader closes file
ASoC: Intel: Haswell/Broadwell: fix setting for .dynamic field
ALSA: compress: prevent potential divide by zero bugs
thermal: int340x_thermal: Fix a NULL vs IS_ERR() check
usb: dwc3: gadget: Fix the uninitialized link_state when udc starts
usb: gadget: Potential NULL dereference on allocation error
ASoC: dapm: change snprintf to scnprintf for possible overflow
ASoC: imx-audmux: change snprintf to scnprintf for possible overflow
ARC: fix __ffs return value to avoid build warnings
mac80211: fix miscounting of ttl-dropped frames
serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling
scsi: csiostor: fix NULL pointer dereference in csio_vport_set_state()
net: altera_tse: fix connect_local_phy error path
ibmveth: Do not process frames after calling napi_reschedule
mac80211: don't initiate TDLS connection if station is not associated to AP
cfg80211: extend range deviation for DMG
KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1
arm/arm64: KVM: Feed initialized memory to MMIO accesses
KVM: arm/arm64: Fix MMIO emulation data handling
powerpc: Always initialize input array when calling epapr_hypercall()
mmc: spi: Fix card detection during probe
mm: enforce min addr even if capable() in expand_downwards()
x86/uaccess: Don't leak the AC flag into __put_user() value evaluation
USB: serial: option: add Telit ME910 ECM composition
USB: serial: cp210x: add ID for Ingenico 3070
USB: serial: ftdi_sio: add ID for Hjelmslund Electronics USB485
cpufreq: Use struct kobj_attribute instead of struct global_attr
sockfs: getxattr: Fail with -EOPNOTSUPP for invalid attribute names
ncpfs: fix build warning of strncpy
isdn: isdn_tty: fix build warning of strncpy
staging: lustre: fix buffer overflow of string buffer
net-sysfs: Fix mem leak in netdev_register_kobject
sky2: Disable MSI on Dell Inspiron 1545 and Gateway P-79
team: Free BPF filter when unregistering netdev
bnxt_en: Drop oversize TX packets to prevent errors.
net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails
xen-netback: fix occasional leak of grant ref mappings under memory pressure
net: Add __icmp_send helper.
net: avoid use IPCB in cipso_v4_error
net: phy: Micrel KSZ8061: link failure after cable connect
x86/CPU/AMD: Set the CPB bit unconditionally on F17h
applicom: Fix potential Spectre v1 vulnerabilities
MIPS: irq: Allocate accurate order pages for irq stack
hugetlbfs: fix races and page leaks during migration
netlabel: fix out-of-bounds memory accesses
net: dsa: mv88e6xxx: Fix u64 statistics
ip6mr: Do not call __IP6_INC_STATS() from preemptible context
media: uvcvideo: Fix 'type' check leading to overflow
vti4: Fix a ipip packet processing bug in 'IPCOMP' virtual tunnel
perf tools: Handle TOPOLOGY headers with no CPU
IB/{hfi1, qib}: Fix WC.byte_len calculation for UD_SEND_WITH_IMM
ipvs: Fix signed integer overflow when setsockopt timeout
iommu/amd: Fix IOMMU page flush when detach device from a domain
xtensa: SMP: fix ccount_timer_shutdown
xtensa: SMP: fix secondary CPU initialization
xtensa: smp_lx200_defconfig: fix vectors clash
xtensa: SMP: mark each possible CPU as present
xtensa: SMP: limit number of possible CPUs by NR_CPUS
net: altera_tse: fix msgdma_tx_completion on non-zero fill_level case
net: hns: Fix wrong read accesses via Clause 45 MDIO protocol
net: stmmac: dwmac-rk: fix error handling in rk_gmac_powerup()
gpio: vf610: Mask all GPIO interrupts
nfs: Fix NULL pointer dereference of dev_name
scsi: libfc: free skb when receiving invalid flogi resp
platform/x86: Fix unmet dependency warning for SAMSUNG_Q10
cifs: fix computation for MAX_SMB2_HDR_SIZE
x86/kexec: Don't setup EFI info if EFI runtime is not enabled
x86_64: increase stack size for KASAN_EXTRA
mm, memory_hotplug: is_mem_section_removable do not pass the end of a zone
mm, memory_hotplug: test_pages_in_a_zone do not pass the end of zone
fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()
autofs: drop dentry reference only when it is never used
autofs: fix error return in autofs_fill_super()
ARM: pxa: ssp: unneeded to free devm_ allocated data
irqchip/mmp: Only touch the PJ4 IRQ & FIQ bits on enable/disable
dmaengine: at_xdmac: Fix wrongfull report of a channel as in use
dmaengine: dmatest: Abort test in case of mapping error
s390/qeth: fix use-after-free in error path
perf symbols: Filter out hidden symbols from labels
MIPS: Remove function size check in get_frame_info()
Input: wacom_serial4 - add support for Wacom ArtPad II tablet
Input: elan_i2c - add id for touchpad found in Lenovo s21e-20
iscsi_ibft: Fix missing break in switch statement
futex,rt_mutex: Restructure rt_mutex_finish_proxy_lock()
ARM: dts: exynos: Add minimal clkout parameters to Exynos3250 PMU
Revert "x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls"
ARM: dts: exynos: Do not ignore real-world fuse values for thermal zone 0 on Exynos5420
udplite: call proper backlog handlers
netfilter: x_tables: enforce nul-terminated table name from getsockopt GET_ENTRIES
netfilter: nfnetlink_log: just returns error for unknown command
netfilter: nfnetlink_acct: validate NFACCT_FILTER parameters
netfilter: nf_conntrack_tcp: Fix stack out of bounds when parsing TCP options
KEYS: restrict /proc/keys by credentials at open time
l2tp: fix infoleak in l2tp_ip6_recvmsg()
net: hsr: fix memory leak in hsr_dev_finalize()
net: sit: fix UBSAN Undefined behaviour in check_6rd
net/x25: fix use-after-free in x25_device_event()
net/x25: reset state in x25_connect()
pptp: dst_release sk_dst_cache in pptp_sock_destruct
ravb: Decrease TxFIFO depth of Q3 and Q2 to one
route: set the deleted fnhe fnhe_daddr to 0 in ip_del_fnhe to fix a race
tcp: handle inet_csk_reqsk_queue_add() failures
net/mlx4_core: Fix reset flow when in command polling mode
net/mlx4_core: Fix qp mtt size calculation
net/x25: fix a race in x25_bind()
mdio_bus: Fix use-after-free on device_register fails
net: Set rtm_table to RT_TABLE_COMPAT for ipv6 for tables > 255
missing barriers in some of unix_sock ->addr and ->path accesses
ipvlan: disallow userns cap_net_admin to change global mode/flags
vxlan: test dev->flags & IFF_UP before calling gro_cells_receive()
vxlan: Fix GRO cells race condition between receive and link delete
net/hsr: fix possible crash in add_timer()
gro_cells: make sure device is up in gro_cells_receive()
tcp/dccp: remove reqsk_put() from inet_child_forget()
ALSA: bebob: use more identical mod_alias for Saffire Pro 10 I/O against Liquid Saffire 56
fs/9p: use fscache mutex rather than spinlock
It's wrong to add len to sector_nr in raid10 reshape twice
media: videobuf2-v4l2: drop WARN_ON in vb2_warn_zero_bytesused()
9p: use inode->i_lock to protect i_size_write() under 32-bit
9p/net: fix memory leak in p9_client_create
ASoC: fsl_esai: fix register setting issue in RIGHT_J mode
stm class: Fix an endless loop in channel allocation
crypto: caam - fixed handling of sg list
crypto: ahash - fix another early termination in hash walk
gpu: ipu-v3: Fix i.MX51 CSI control registers offset
gpu: ipu-v3: Fix CSI offsets for imx53
s390/dasd: fix using offset into zero size array error
ARM: OMAP2+: Variable "reg" in function omap4_dsi_mux_pads() could be uninitialized
Input: matrix_keypad - use flush_delayed_work()
i2c: cadence: Fix the hold bit setting
Input: st-keyscan - fix potential zalloc NULL dereference
ARM: 8824/1: fix a migrating irq bug when hotplug cpu
assoc_array: Fix shortcut creation
scsi: libiscsi: Fix race between iscsi_xmit_task and iscsi_complete_task
net: systemport: Fix reception of BPDUs
pinctrl: meson: meson8b: fix the sdxc_a data 1..3 pins
net: mv643xx_eth: disable clk on error path in mv643xx_eth_shared_probe()
ASoC: topology: free created components in tplg load error
arm64: Relax GIC version check during early boot
tmpfs: fix link accounting when a tmpfile is linked in
ARC: uacces: remove lp_start, lp_end from clobber list
phonet: fix building with clang
mac80211_hwsim: propagate genlmsg_reply return code
net: set static variable an initial value in atl2_probe()
tmpfs: fix uninitialized return value in shmem_link
stm class: Prevent division by zero
crypto: arm64/aes-ccm - fix logical bug in AAD MAC handling
CIFS: Fix read after write for files with read caching
tracing: Do not free iter->trace in fail path of tracing_open_pipe()
ACPI / device_sysfs: Avoid OF modalias creation for removed device
regulator: s2mps11: Fix steps for buck7, buck8 and LDO35
regulator: s2mpa01: Fix step values for some LDOs
clocksource/drivers/exynos_mct: Move one-shot check from tick clear to ISR
clocksource/drivers/exynos_mct: Clear timer interrupt when shutdown
s390/virtio: handle find on invalid queue gracefully
scsi: virtio_scsi: don't send sc payload with tmfs
scsi: target/iscsi: Avoid iscsit_release_commands_from_conn() deadlock
m68k: Add -ffreestanding to CFLAGS
btrfs: ensure that a DUP or RAID1 block group has exactly two stripes
Btrfs: fix corruption reading shared and compressed extents after hole punching
crypto: pcbc - remove bogus memcpy()s with src == dest
cpufreq: tegra124: add missing of_node_put()
cpufreq: pxa2xx: remove incorrect __init annotation
ext4: fix crash during online resizing
ext2: Fix underflow in ext2_max_size()
clk: ingenic: Fix round_rate misbehaving with non-integer dividers
dmaengine: usb-dmac: Make DMAC system sleep callbacks explicit
mm/vmalloc: fix size check for remap_vmalloc_range_partial()
kernel/sysctl.c: add missing range check in do_proc_dointvec_minmax_conv
intel_th: Don't reference unassigned outputs
parport_pc: fix find_superio io compare code, should use equal test.
i2c: tegra: fix maximum transfer size
perf bench: Copy kernel files needed to build mem{cpy,set} x86_64 benchmarks
serial: 8250_pci: Fix number of ports for ACCES serial cards
serial: 8250_pci: Have ACCES cards that use the four port Pericom PI7C9X7954 chip use the pci_pericom_setup()
jbd2: clear dirty flag when revoking a buffer from an older transaction
jbd2: fix compile warning when using JBUFFER_TRACE
powerpc/32: Clear on-stack exception marker upon exception return
powerpc/wii: properly disable use of BATs when requested.
powerpc/powernv: Make opal log only readable by root
powerpc/83xx: Also save/restore SPRG4-7 during suspend
ARM: s3c24xx: Fix boolean expressions in osiris_dvs_notify
dm: fix to_sector() for 32bit
NFS41: pop some layoutget errors to application
perf intel-pt: Fix CYC timestamp calculation after OVF
perf auxtrace: Define auxtrace record alignment
perf intel-pt: Fix overlap calculation for padding
md: Fix failed allocation of md_register_thread
NFS: Fix an I/O request leakage in nfs_do_recoalesce
NFS: Don't recoalesce on error in nfs_pageio_complete_mirror()
nfsd: fix memory corruption caused by readdir
nfsd: fix wrong check in write_v4_end_grace()
PM / wakeup: Rework wakeup source timer cancellation
rcu: Do RCU GP kthread self-wakeup from softirq and interrupt
media: uvcvideo: Avoid NULL pointer dereference at the end of streaming
drm/radeon/evergreen_cs: fix missing break in switch statement
KVM: nVMX: Sign extend displacements of VMX instr's mem operands
KVM: nVMX: Ignore limit checks on VMX instructions using flat segments
KVM: X86: Fix residual mmio emulation request to userspace
Linux 4.4.177
Change-Id: Ide9813404248e6d7f9dc4024ac244dc1fbdd21b6
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit 6321aa197547da397753757bd84c6ce64b3e3d89 ]
clang warns about overflowing the data[] member in the struct pnpipehdr:
net/phonet/pep.c:295:8: warning: array index 4 is past the end of the array (which contains 1 element) [-Warray-bounds]
if (hdr->data[4] == PEP_IND_READY)
^ ~
include/net/phonet/pep.h:66:3: note: array 'data' declared here
u8 data[1];
Using a flexible array member at the end of the struct avoids the
warning, but since we cannot have a flexible array member inside
of the union, each index now has to be moved back by one, which
makes it a little uglier.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Rémi Denis-Courmont <remi@remlab.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit bb06c388fa20ae24cfe80c52488de718a7e3a53f upstream.
If msize is less than 4096, we should close and put trans, destroy
tagpool, not just free client. This patch fixes that.
Link: http://lkml.kernel.org/m/1552464097-142659-1-git-send-email-zhengbin13@huawei.com
Cc: stable@vger.kernel.org
Fixes: 574d356b7a02 ("9p/net: put a lower bound on msize")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit da8ab57863ed7e912d10b179b6bdc652f635bd19 upstream.
Back in linux-4.4, I inadvertently put a call to reqsk_put() in
inet_child_forget(), forgetting it could be called from two different
points.
In the case it is called from inet_csk_reqsk_queue_add(), we want to
keep the reference on the request socket, since it is released later by
the caller (tcp_v{4|6}_rcv())
This bug never showed up because atomic_dec_and_test() was not signaling
the underflow, and SLAB_DESTROY_BY RCU semantic for request sockets
prevented the request to be put in quarantine.
Recent conversion of socket refcount from atomic_t to refcount_t finally
exposed the bug.
So move the reqsk_put() to inet_csk_listen_stop() to fix this.
Thanks to Shankara Pailoor for using syzkaller and providing
a nice set of .config and C repro.
WARNING: CPU: 2 PID: 4277 at lib/refcount.c:186
refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:186
Kernel panic - not syncing: panic_on_warn set ...
CPU: 2 PID: 4277 Comm: syz-executor0 Not tainted 4.13.0-rc7 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
Ubuntu-1.8.2-1ubuntu1 04/01/2014
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:16 [inline]
dump_stack+0xf7/0x1aa lib/dump_stack.c:52
panic+0x1ae/0x3a7 kernel/panic.c:180
__warn+0x1c4/0x1d9 kernel/panic.c:541
report_bug+0x211/0x2d0 lib/bug.c:183
fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:190
do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
do_trap+0x260/0x390 arch/x86/kernel/traps.c:273
do_error_trap+0x118/0x340 arch/x86/kernel/traps.c:310
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:323
invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:846
RIP: 0010:refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:186
RSP: 0018:ffff88006e006b60 EFLAGS: 00010286
RAX: 0000000000000026 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000026 RSI: 1ffff1000dc00d2c RDI: ffffed000dc00d60
RBP: ffff88006e006bf0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1000dc00d6d
R13: 00000000ffffffff R14: 0000000000000001 R15: ffff88006ce9d340
refcount_dec_and_test+0x1a/0x20 lib/refcount.c:211
reqsk_put+0x71/0x2b0 include/net/request_sock.h:123
tcp_v4_rcv+0x259e/0x2e20 net/ipv4/tcp_ipv4.c:1729
ip_local_deliver_finish+0x2e2/0xba0 net/ipv4/ip_input.c:216
NF_HOOK include/linux/netfilter.h:248 [inline]
ip_local_deliver+0x1ce/0x6d0 net/ipv4/ip_input.c:257
dst_input include/net/dst.h:477 [inline]
ip_rcv_finish+0x8db/0x19c0 net/ipv4/ip_input.c:397
NF_HOOK include/linux/netfilter.h:248 [inline]
ip_rcv+0xc3f/0x17d0 net/ipv4/ip_input.c:488
__netif_receive_skb_core+0x1fb7/0x31f0 net/core/dev.c:4298
__netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4336
process_backlog+0x1c5/0x6d0 net/core/dev.c:5102
napi_poll net/core/dev.c:5499 [inline]
net_rx_action+0x6d3/0x14a0 net/core/dev.c:5565
__do_softirq+0x2cb/0xb2d kernel/softirq.c:284
do_softirq_own_stack+0x1c/0x30 arch/x86/entry/entry_64.S:898
</IRQ>
do_softirq.part.16+0x63/0x80 kernel/softirq.c:328
do_softirq kernel/softirq.c:176 [inline]
__local_bh_enable_ip+0x84/0x90 kernel/softirq.c:181
local_bh_enable include/linux/bottom_half.h:31 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:705 [inline]
ip_finish_output2+0x8ad/0x1360 net/ipv4/ip_output.c:231
ip_finish_output+0x74e/0xb80 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:237 [inline]
ip_output+0x1cc/0x850 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:471 [inline]
ip_local_out+0x95/0x160 net/ipv4/ip_output.c:124
ip_queue_xmit+0x8c6/0x1810 net/ipv4/ip_output.c:504
tcp_transmit_skb+0x1963/0x3320 net/ipv4/tcp_output.c:1123
tcp_send_ack.part.35+0x38c/0x620 net/ipv4/tcp_output.c:3575
tcp_send_ack+0x49/0x60 net/ipv4/tcp_output.c:3545
tcp_rcv_synsent_state_process net/ipv4/tcp_input.c:5795 [inline]
tcp_rcv_state_process+0x4876/0x4b60 net/ipv4/tcp_input.c:5930
tcp_v4_do_rcv+0x58a/0x820 net/ipv4/tcp_ipv4.c:1483
sk_backlog_rcv include/net/sock.h:907 [inline]
__release_sock+0x124/0x360 net/core/sock.c:2223
release_sock+0xa4/0x2a0 net/core/sock.c:2715
inet_wait_for_connect net/ipv4/af_inet.c:557 [inline]
__inet_stream_connect+0x671/0xf00 net/ipv4/af_inet.c:643
inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:682
SYSC_connect+0x204/0x470 net/socket.c:1628
SyS_connect+0x24/0x30 net/socket.c:1609
entry_SYSCALL_64_fastpath+0x18/0xad
RIP: 0033:0x451e59
RSP: 002b:00007f474843fc08 EFLAGS: 00000216 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 0000000000451e59
RDX: 0000000000000010 RSI: 0000000020002000 RDI: 0000000000000007
RBP: 0000000000000046 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000000000
R13: 00007ffc040a0f8f R14: 00007f47484409c0 R15: 0000000000000000
Fixes: ebb516af60e1 ("tcp/dccp: fix race at listener dismantle phase")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Shankara Pailoor <sp3485@columbia.edu>
Tested-by: Shankara Pailoor <sp3485@columbia.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 1e027960edfaa6a43f9ca31081729b716598112b ]
syzbot found another add_timer() issue, this time in net/hsr [1]
Let's use mod_timer() which is safe.
[1]
kernel BUG at kernel/time/timer.c:1136!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 15909 Comm: syz-executor.3 Not tainted 5.0.0+ #97
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
kobject: 'loop2' (00000000f5629718): kobject_uevent_env
RIP: 0010:add_timer kernel/time/timer.c:1136 [inline]
RIP: 0010:add_timer+0x654/0xbe0 kernel/time/timer.c:1134
Code: 0f 94 c5 31 ff 44 89 ee e8 09 61 0f 00 45 84 ed 0f 84 77 fd ff ff e8 bb 5f 0f 00 e8 07 10 a0 ff e9 68 fd ff ff e8 ac 5f 0f 00 <0f> 0b e8 a5 5f 0f 00 0f 0b e8 9e 5f 0f 00 4c 89 b5 58 ff ff ff e9
RSP: 0018:ffff8880656eeca0 EFLAGS: 00010246
kobject: 'loop2' (00000000f5629718): fill_kobj_path: path = '/devices/virtual/block/loop2'
RAX: 0000000000040000 RBX: 1ffff1100caddd9a RCX: ffffc9000c436000
RDX: 0000000000040000 RSI: ffffffff816056c4 RDI: ffff88806a2f6cc8
RBP: ffff8880656eed58 R08: ffff888067f4a300 R09: ffff888067f4abc8
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88806a2f6cc0
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880656eed30
FS: 00007fc2019bf700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000738000 CR3: 0000000067e8e000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hsr_check_announce net/hsr/hsr_device.c:99 [inline]
hsr_check_carrier_and_operstate+0x567/0x6f0 net/hsr/hsr_device.c:120
hsr_netdev_notify+0x297/0xa00 net/hsr/hsr_main.c:51
notifier_call_chain+0xc7/0x240 kernel/notifier.c:93
__raw_notifier_call_chain kernel/notifier.c:394 [inline]
raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739
call_netdevice_notifiers_extack net/core/dev.c:1751 [inline]
call_netdevice_notifiers net/core/dev.c:1765 [inline]
dev_open net/core/dev.c:1436 [inline]
dev_open+0x143/0x160 net/core/dev.c:1424
team_port_add drivers/net/team/team.c:1203 [inline]
team_add_slave+0xa07/0x15d0 drivers/net/team/team.c:1933
do_set_master net/core/rtnetlink.c:2358 [inline]
do_set_master+0x1d4/0x230 net/core/rtnetlink.c:2332
do_setlink+0x966/0x3510 net/core/rtnetlink.c:2493
rtnl_setlink+0x271/0x3b0 net/core/rtnetlink.c:2747
rtnetlink_rcv_msg+0x465/0xb00 net/core/rtnetlink.c:5192
netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2485
rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5210
netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1336
netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1925
sock_sendmsg_nosec net/socket.c:622 [inline]
sock_sendmsg+0xdd/0x130 net/socket.c:632
sock_write_iter+0x27c/0x3e0 net/socket.c:923
call_write_iter include/linux/fs.h:1869 [inline]
do_iter_readv_writev+0x5e0/0x8e0 fs/read_write.c:680
do_iter_write fs/read_write.c:956 [inline]
do_iter_write+0x184/0x610 fs/read_write.c:937
vfs_writev+0x1b3/0x2f0 fs/read_write.c:1001
do_writev+0xf6/0x290 fs/read_write.c:1036
__do_sys_writev fs/read_write.c:1109 [inline]
__se_sys_writev fs/read_write.c:1106 [inline]
__x64_sys_writev+0x75/0xb0 fs/read_write.c:1106
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457f29
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc2019bec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457f29
RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc2019bf6d4
R13: 00000000004c4a60 R14: 00000000004dd218 R15: 00000000ffffffff
Fixes: f421436a591d ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit ae3b564179bfd06f32d051b9e5d72ce4b2a07c37 ]
Several u->addr and u->path users are not holding any locks in
common with unix_bind(). unix_state_lock() is useless for those
purposes.
u->addr is assign-once and *(u->addr) is fully set up by the time
we set u->addr (all under unix_table_lock). u->path is also
set in the same critical area, also before setting u->addr, and
any unix_sock with ->path filled will have non-NULL ->addr.
So setting ->addr with smp_store_release() is all we need for those
"lockless" users - just have them fetch ->addr with smp_load_acquire()
and don't even bother looking at ->path if they see NULL ->addr.
Users of ->addr and ->path fall into several classes now:
1) ones that do smp_load_acquire(u->addr) and access *(u->addr)
and u->path only if smp_load_acquire() has returned non-NULL.
2) places holding unix_table_lock. These are guaranteed that
*(u->addr) is seen fully initialized. If unix_sock is in one of the
"bound" chains, so's ->path.
3) unix_sock_destructor() using ->addr is safe. All places
that set u->addr are guaranteed to have seen all stores *(u->addr)
while holding a reference to u and unix_sock_destructor() is called
when (atomic) refcount hits zero.
4) unix_release_sock() using ->path is safe. unix_bind()
is serialized wrt unix_release() (normally - by struct file
refcount), and for the instances that had ->path set by unix_bind()
unix_release_sock() comes from unix_release(), so they are fine.
Instances that had it set in unix_stream_connect() either end up
attached to a socket (in unix_accept()), in which case the call
chain to unix_release_sock() and serialization are the same as in
the previous case, or they never get accept'ed and unix_release_sock()
is called when the listener is shut down and its queue gets purged.
In that case the listener's queue lock provides the barriers needed -
unix_stream_connect() shoves our unix_sock into listener's queue
under that lock right after having set ->path and eventual
unix_release_sock() caller picks them from that queue under the
same lock right before calling unix_release_sock().
5) unix_find_other() use of ->path is pointless, but safe -
it happens with successful lookup by (abstract) name, so ->path.dentry
is guaranteed to be NULL there.
earlier-variant-reviewed-by: "Paul E. McKenney" <paulmck@linux.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 97f0082a0592212fc15d4680f5a4d80f79a1687c ]
Set rtm_table to RT_TABLE_COMPAT for ipv6 for tables > 255 to
keep legacy software happy. This is similar to what was done for
ipv4 in commit 709772e6e065 ("net: Fix routing tables with
id > 255 for legacy software").
Signed-off-by: Kalash Nainwal <kalash@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 797a22bd5298c2674d927893f46cadf619dad11d ]
syzbot was able to trigger another soft lockup [1]
I first thought it was the O(N^2) issue I mentioned in my
prior fix (f657d22ee1f "net/x25: do not hold the cpu
too long in x25_new_lci()"), but I eventually found
that x25_bind() was not checking SOCK_ZAPPED state under
socket lock protection.
This means that multiple threads can end up calling
x25_insert_socket() for the same socket, and corrupt x25_list
[1]
watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.2:10492]
Modules linked in:
irq event stamp: 27515
hardirqs last enabled at (27514): [<ffffffff81006673>] trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (27515): [<ffffffff8100668f>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last enabled at (32): [<ffffffff8632ee73>] x25_get_neigh+0xa3/0xd0 net/x25/x25_link.c:336
softirqs last disabled at (34): [<ffffffff86324bc3>] x25_find_socket+0x23/0x140 net/x25/af_x25.c:341
CPU: 0 PID: 10492 Comm: syz-executor.2 Not tainted 5.0.0-rc7+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:97
Code: f4 ff ff ff e8 11 9f ea ff 48 c7 05 12 fb e5 08 00 00 00 00 e9 c8 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 <48> 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 38 0c 92 7e 81 e2
RSP: 0018:ffff88806e94fc48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1100d84dac5 RBX: 0000000000000001 RCX: ffffc90006197000
RDX: 0000000000040000 RSI: ffffffff86324bf3 RDI: ffff88806c26d628
RBP: ffff88806e94fc48 R08: ffff88806c1c6500 R09: fffffbfff1282561
R10: fffffbfff1282560 R11: ffffffff89412b03 R12: ffff88806c26d628
R13: ffff888090455200 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f3a107e4700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a107e3db8 CR3: 00000000a5544000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__x25_find_socket net/x25/af_x25.c:327 [inline]
x25_find_socket+0x7d/0x140 net/x25/af_x25.c:342
x25_new_lci net/x25/af_x25.c:355 [inline]
x25_connect+0x380/0xde0 net/x25/af_x25.c:784
__sys_connect+0x266/0x330 net/socket.c:1662
__do_sys_connect net/socket.c:1673 [inline]
__se_sys_connect net/socket.c:1670 [inline]
__x64_sys_connect+0x73/0xb0 net/socket.c:1670
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e29
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3a107e3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29
RDX: 0000000000000012 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a107e46d4
R13: 00000000004be362 R14: 00000000004ceb98 R15: 00000000ffffffff
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10493 Comm: syz-executor.3 Not tainted 5.0.0-rc7+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:queued_write_lock_slowpath+0x143/0x290 kernel/locking/qrwlock.c:86
Code: 4c 8d 2c 01 41 83 c7 03 41 0f b6 45 00 41 38 c7 7c 08 84 c0 0f 85 0c 01 00 00 8b 03 3d 00 01 00 00 74 1a f3 90 41 0f b6 55 00 <41> 38 d7 7c eb 84 d2 74 e7 48 89 df e8 cc aa 4e 00 eb dd be 04 00
RSP: 0018:ffff888085c47bd8 EFLAGS: 00000206
RAX: 0000000000000300 RBX: ffffffff89412b00 RCX: 1ffffffff1282560
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff89412b00
RBP: ffff888085c47c70 R08: 1ffffffff1282560 R09: fffffbfff1282561
R10: fffffbfff1282560 R11: ffffffff89412b03 R12: 00000000000000ff
R13: fffffbfff1282560 R14: 1ffff11010b88f7d R15: 0000000000000003
FS: 00007fdd04086700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdd04064db8 CR3: 0000000090be0000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
queued_write_lock include/asm-generic/qrwlock.h:104 [inline]
do_raw_write_lock+0x1d6/0x290 kernel/locking/spinlock_debug.c:203
__raw_write_lock_bh include/linux/rwlock_api_smp.h:204 [inline]
_raw_write_lock_bh+0x3b/0x50 kernel/locking/spinlock.c:312
x25_insert_socket+0x21/0xe0 net/x25/af_x25.c:267
x25_bind+0x273/0x340 net/x25/af_x25.c:703
__sys_bind+0x23f/0x290 net/socket.c:1481
__do_sys_bind net/socket.c:1492 [inline]
__se_sys_bind net/socket.c:1490 [inline]
__x64_sys_bind+0x73/0xb0 net/socket.c:1490
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e29
Fixes: 90c27297a9bf ("X.25 remove bkl in bind")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: andrew hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 9d3e1368bb45893a75a5dfb7cd21fdebfa6b47af ]
Commit 7716682cc58e ("tcp/dccp: fix another race at listener
dismantle") let inet_csk_reqsk_queue_add() fail, and adjusted
{tcp,dccp}_check_req() accordingly. However, TFO and syncookies
weren't modified, thus leaking allocated resources on error.
Contrary to tcp_check_req(), in both syncookies and TFO cases,
we need to drop the request socket. Also, since the child socket is
created with inet_csk_clone_lock(), we have to unlock it and drop an
extra reference (->sk_refcount is initially set to 2 and
inet_csk_reqsk_queue_add() drops only one ref).
For TFO, we also need to revert the work done by tcp_try_fastopen()
(with reqsk_fastopen_remove()).
Fixes: 7716682cc58e ("tcp/dccp: fix another race at listener dismantle")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit ee60ad219f5c7c4fb2f047f88037770063ef785f ]
The race occurs in __mkroute_output() when 2 threads lookup a dst:
CPU A CPU B
find_exception()
find_exception() [fnhe expires]
ip_del_fnhe() [fnhe is deleted]
rt_bind_exception()
In rt_bind_exception() it will bind a deleted fnhe with the new dst, and
this dst will get no chance to be freed. It causes a dev defcnt leak and
consecutive dmesg warnings:
unregister_netdevice: waiting for ethX to become free. Usage count = 1
Especially thanks Jon to identify the issue.
This patch fixes it by setting fnhe_daddr to 0 in ip_del_fnhe() to stop
binding the deleted fnhe with a new dst when checking fnhe's fnhe_daddr
and daddr in rt_bind_exception().
It works as both ip_del_fnhe() and rt_bind_exception() are protected by
fnhe_lock and the fhne is freed by kfree_rcu().
Fixes: deed49df7390 ("route: check and remove route cache when we get route")
Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit ee74d0bd4325efb41e38affe5955f920ed973f23 ]
In case x25_connect() fails and frees the socket neighbour,
we also need to undo the change done to x25->state.
Before my last bug fix, we had use-after-free so this
patch fixes a latent bug.
syzbot report :
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 16137 Comm: syz-executor.1 Not tainted 5.0.0+ #117
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:x25_write_internal+0x1e8/0xdf0 net/x25/x25_subr.c:173
Code: 00 40 88 b5 e0 fe ff ff 0f 85 01 0b 00 00 48 8b 8b 80 04 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 79 1c 48 89 fe 48 c1 ee 03 <0f> b6 34 16 48 89 fa 83 e2 07 83 c2 03 40 38 f2 7c 09 40 84 f6 0f
RSP: 0018:ffff888076717a08 EFLAGS: 00010207
RAX: ffff88805f2f2292 RBX: ffff8880a0ae6000 RCX: 0000000000000000
kobject: 'loop5' (0000000018d0d0ee): kobject_uevent_env
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: 000000000000001c
RBP: ffff888076717b40 R08: ffff8880950e0580 R09: ffffed100be5e46d
R10: ffffed100be5e46c R11: ffff88805f2f2363 R12: ffff888065579840
kobject: 'loop5' (0000000018d0d0ee): fill_kobj_path: path = '/devices/virtual/block/loop5'
R13: 1ffff1100ece2f47 R14: 0000000000000013 R15: 0000000000000013
FS: 00007fb88cf43700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9a42a41028 CR3: 0000000087a67000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
x25_release+0xd0/0x340 net/x25/af_x25.c:658
__sock_release+0xd3/0x2b0 net/socket.c:579
sock_close+0x1b/0x30 net/socket.c:1162
__fput+0x2df/0x8d0 fs/file_table.c:278
____fput+0x16/0x20 fs/file_table.c:309
task_work_run+0x14a/0x1c0 kernel/task_work.c:113
get_signal+0x1961/0x1d50 kernel/signal.c:2388
do_signal+0x87/0x1940 arch/x86/kernel/signal.c:816
exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:162
prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457f29
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb88cf42c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffe00 RBX: 0000000000000003 RCX: 0000000000457f29
RDX: 0000000000000012 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb88cf436d4
R13: 00000000004be462 R14: 00000000004cec98 R15: 00000000ffffffff
Modules linked in:
Fixes: 95d6ebd53c79 ("net/x25: fix use-after-free in x25_device_event()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: andrew hendry <andrew.hendry@gmail.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 95d6ebd53c79522bf9502dbc7e89e0d63f94dae4 ]
In case of failure x25_connect() does a x25_neigh_put(x25->neighbour)
but forgets to clear x25->neighbour pointer, thus triggering use-after-free.
Since the socket is visible in x25_list, we need to hold x25_list_lock
to protect the operation.
syzbot report :
BUG: KASAN: use-after-free in x25_kill_by_device net/x25/af_x25.c:217 [inline]
BUG: KASAN: use-after-free in x25_device_event+0x296/0x2b0 net/x25/af_x25.c:252
Read of size 8 at addr ffff8880a030edd0 by task syz-executor003/7854
CPU: 0 PID: 7854 Comm: syz-executor003 Not tainted 5.0.0+ #97
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
print_address_description.cold+0x7c/0x20d mm/kasan/report.c:187
kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317
__asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135
x25_kill_by_device net/x25/af_x25.c:217 [inline]
x25_device_event+0x296/0x2b0 net/x25/af_x25.c:252
notifier_call_chain+0xc7/0x240 kernel/notifier.c:93
__raw_notifier_call_chain kernel/notifier.c:394 [inline]
raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739
call_netdevice_notifiers_extack net/core/dev.c:1751 [inline]
call_netdevice_notifiers net/core/dev.c:1765 [inline]
__dev_notify_flags+0x1e9/0x2c0 net/core/dev.c:7607
dev_change_flags+0x10d/0x170 net/core/dev.c:7643
dev_ifsioc+0x2b0/0x940 net/core/dev_ioctl.c:237
dev_ioctl+0x1b8/0xc70 net/core/dev_ioctl.c:488
sock_do_ioctl+0x1bd/0x300 net/socket.c:995
sock_ioctl+0x32b/0x610 net/socket.c:1096
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4467c9
Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fdbea222d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000006dbc58 RCX: 00000000004467c9
RDX: 0000000020000340 RSI: 0000000000008914 RDI: 0000000000000003
RBP: 00000000006dbc50 R08: 00007fdbea223700 R09: 0000000000000000
R10: 00007fdbea223700 R11: 0000000000000246 R12: 00000000006dbc5c
R13: 6000030030626669 R14: 0000000000000000 R15: 0000000030626669
Allocated by task 7843:
save_stack+0x45/0xd0 mm/kasan/common.c:73
set_track mm/kasan/common.c:85 [inline]
__kasan_kmalloc mm/kasan/common.c:495 [inline]
__kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:468
kasan_kmalloc+0x9/0x10 mm/kasan/common.c:509
kmem_cache_alloc_trace+0x151/0x760 mm/slab.c:3615
kmalloc include/linux/slab.h:545 [inline]
x25_link_device_up+0x46/0x3f0 net/x25/x25_link.c:249
x25_device_event+0x116/0x2b0 net/x25/af_x25.c:242
notifier_call_chain+0xc7/0x240 kernel/notifier.c:93
__raw_notifier_call_chain kernel/notifier.c:394 [inline]
raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739
call_netdevice_notifiers_extack net/core/dev.c:1751 [inline]
call_netdevice_notifiers net/core/dev.c:1765 [inline]
__dev_notify_flags+0x121/0x2c0 net/core/dev.c:7605
dev_change_flags+0x10d/0x170 net/core/dev.c:7643
dev_ifsioc+0x2b0/0x940 net/core/dev_ioctl.c:237
dev_ioctl+0x1b8/0xc70 net/core/dev_ioctl.c:488
sock_do_ioctl+0x1bd/0x300 net/socket.c:995
sock_ioctl+0x32b/0x610 net/socket.c:1096
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 7865:
save_stack+0x45/0xd0 mm/kasan/common.c:73
set_track mm/kasan/common.c:85 [inline]
__kasan_slab_free+0x102/0x150 mm/kasan/common.c:457
kasan_slab_free+0xe/0x10 mm/kasan/common.c:465
__cache_free mm/slab.c:3494 [inline]
kfree+0xcf/0x230 mm/slab.c:3811
x25_neigh_put include/net/x25.h:253 [inline]
x25_connect+0x8d8/0xde0 net/x25/af_x25.c:824
__sys_connect+0x266/0x330 net/socket.c:1685
__do_sys_connect net/socket.c:1696 [inline]
__se_sys_connect net/socket.c:1693 [inline]
__x64_sys_connect+0x73/0xb0 net/socket.c:1693
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at ffff8880a030edc0
which belongs to the cache kmalloc-256 of size 256
The buggy address is located 16 bytes inside of
256-byte region [ffff8880a030edc0, ffff8880a030eec0)
The buggy address belongs to the page:
page:ffffea000280c380 count:1 mapcount:0 mapping:ffff88812c3f07c0 index:0x0
flags: 0x1fffc0000000200(slab)
raw: 01fffc0000000200 ffffea0002806788 ffffea00027f0188 ffff88812c3f07c0
raw: 0000000000000000 ffff8880a030e000 000000010000000c 0000000000000000
page dumped because: kasan: bad access detected
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot+04babcefcd396fabec37@syzkaller.appspotmail.com
Cc: andrew hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit a843dc4ebaecd15fca1f4d35a97210f72ea1473b ]
In func check_6rd,tunnel->ip6rd.relay_prefixlen may equal to
32,so UBSAN complain about it.
UBSAN: Undefined behaviour in net/ipv6/sit.c:781:47
shift exponent 32 is too large for 32-bit type 'unsigned int'
CPU: 6 PID: 20036 Comm: syz-executor.0 Not tainted 4.19.27 #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1
04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xca/0x13e lib/dump_stack.c:113
ubsan_epilogue+0xe/0x81 lib/ubsan.c:159
__ubsan_handle_shift_out_of_bounds+0x293/0x2e8 lib/ubsan.c:425
check_6rd.constprop.9+0x433/0x4e0 net/ipv6/sit.c:781
try_6rd net/ipv6/sit.c:806 [inline]
ipip6_tunnel_xmit net/ipv6/sit.c:866 [inline]
sit_tunnel_xmit+0x141c/0x2720 net/ipv6/sit.c:1033
__netdev_start_xmit include/linux/netdevice.h:4300 [inline]
netdev_start_xmit include/linux/netdevice.h:4309 [inline]
xmit_one net/core/dev.c:3243 [inline]
dev_hard_start_xmit+0x17c/0x780 net/core/dev.c:3259
__dev_queue_xmit+0x1656/0x2500 net/core/dev.c:3829
neigh_output include/net/neighbour.h:501 [inline]
ip6_finish_output2+0xa36/0x2290 net/ipv6/ip6_output.c:120
ip6_finish_output+0x3e7/0xa20 net/ipv6/ip6_output.c:154
NF_HOOK_COND include/linux/netfilter.h:278 [inline]
ip6_output+0x1e2/0x720 net/ipv6/ip6_output.c:171
dst_output include/net/dst.h:444 [inline]
ip6_local_out+0x99/0x170 net/ipv6/output_core.c:176
ip6_send_skb+0x9d/0x2f0 net/ipv6/ip6_output.c:1697
ip6_push_pending_frames+0xc0/0x100 net/ipv6/ip6_output.c:1717
rawv6_push_pending_frames net/ipv6/raw.c:616 [inline]
rawv6_sendmsg+0x2435/0x3530 net/ipv6/raw.c:946
inet_sendmsg+0xf8/0x5c0 net/ipv4/af_inet.c:798
sock_sendmsg_nosec net/socket.c:621 [inline]
sock_sendmsg+0xc8/0x110 net/socket.c:631
___sys_sendmsg+0x6cf/0x890 net/socket.c:2114
__sys_sendmsg+0xf0/0x1b0 net/socket.c:2152
do_syscall_64+0xc8/0x580 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Signed-off-by: linmiaohe <linmiaohe@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 6caabe7f197d3466d238f70915d65301f1716626 ]
If hsr_add_port(hsr, hsr_dev, HSR_PT_MASTER) failed to
add port, it directly returns res and forgets to free the node
that allocated in hsr_create_self_node(), and forgets to delete
the node->mac_list linked in hsr->self_node_db.
BUG: memory leak
unreferenced object 0xffff8881cfa0c780 (size 64):
comm "syz-executor.0", pid 2077, jiffies 4294717969 (age 2415.377s)
hex dump (first 32 bytes):
e0 c7 a0 cf 81 88 ff ff 00 02 00 00 00 00 ad de ................
00 e6 49 cd 81 88 ff ff c0 9b 87 d0 81 88 ff ff ..I.............
backtrace:
[<00000000e2ff5070>] hsr_dev_finalize+0x736/0x960 [hsr]
[<000000003ed2e597>] hsr_newlink+0x2b2/0x3e0 [hsr]
[<000000003fa8c6b6>] __rtnl_newlink+0xf1f/0x1600 net/core/rtnetlink.c:3182
[<000000001247a7ad>] rtnl_newlink+0x66/0x90 net/core/rtnetlink.c:3240
[<00000000e7d1b61d>] rtnetlink_rcv_msg+0x54e/0xb90 net/core/rtnetlink.c:5130
[<000000005556bd3a>] netlink_rcv_skb+0x129/0x340 net/netlink/af_netlink.c:2477
[<00000000741d5ee6>] netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
[<00000000741d5ee6>] netlink_unicast+0x49a/0x650 net/netlink/af_netlink.c:1336
[<000000009d56f9b7>] netlink_sendmsg+0x88b/0xdf0 net/netlink/af_netlink.c:1917
[<0000000046b35c59>] sock_sendmsg_nosec net/socket.c:621 [inline]
[<0000000046b35c59>] sock_sendmsg+0xc3/0x100 net/socket.c:631
[<00000000d208adc9>] __sys_sendto+0x33e/0x560 net/socket.c:1786
[<00000000b582837a>] __do_sys_sendto net/socket.c:1798 [inline]
[<00000000b582837a>] __se_sys_sendto net/socket.c:1794 [inline]
[<00000000b582837a>] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1794
[<00000000c866801d>] do_syscall_64+0x147/0x600 arch/x86/entry/common.c:290
[<00000000fea382d9>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<00000000e01dacb3>] 0xffffffffffffffff
Fixes: c5a759117210 ("net/hsr: Use list_head (and rcu) instead of array for slave devices.")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 163d1c3d6f17556ed3c340d3789ea93be95d6c28 ]
Back in 2013 Hannes took care of most of such leaks in commit
bceaa90240b6 ("inet: prevent leakage of uninitialized memory to user in recv syscalls")
But the bug in l2tp_ip6_recvmsg() has not been fixed.
syzbot report :
BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32
CPU: 1 PID: 10996 Comm: syz-executor362 Not tainted 5.0.0+ #11
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x173/0x1d0 lib/dump_stack.c:113
kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:600
kmsan_internal_check_memory+0x9f4/0xb10 mm/kmsan/kmsan.c:694
kmsan_copy_to_user+0xab/0xc0 mm/kmsan/kmsan_hooks.c:601
_copy_to_user+0x16b/0x1f0 lib/usercopy.c:32
copy_to_user include/linux/uaccess.h:174 [inline]
move_addr_to_user+0x311/0x570 net/socket.c:227
___sys_recvmsg+0xb65/0x1310 net/socket.c:2283
do_recvmmsg+0x646/0x10c0 net/socket.c:2390
__sys_recvmmsg net/socket.c:2469 [inline]
__do_sys_recvmmsg net/socket.c:2492 [inline]
__se_sys_recvmmsg+0x1d1/0x350 net/socket.c:2485
__x64_sys_recvmmsg+0x62/0x80 net/socket.c:2485
do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x445819
Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f64453eddb8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445819
RDX: 0000000000000005 RSI: 0000000020002f80 RDI: 0000000000000003
RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c
R13: 00007ffeba8f87af R14: 00007f64453ee9c0 R15: 20c49ba5e353f7cf
Local variable description: ----addr@___sys_recvmsg
Variable was created at:
___sys_recvmsg+0xf6/0x1310 net/socket.c:2244
do_recvmmsg+0x646/0x10c0 net/socket.c:2390
Bytes 0-31 of 32 are uninitialized
Memory access of size 32 starts at ffff8880ae62fbb0
Data copied to user address 0000000020000000
Fixes: a32e0eec7042 ("l2tp: introduce L2TPv3 IP encapsulation support for IPv6")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 644c7e48cb59cfc6988ddc7bf3d3b1ba5fe7fa9d upstream.
Baozeng Ding reported a KASAN stack out of bounds issue - it uncovered that
the TCP option parsing routines in netfilter TCP connection tracking could
read one byte out of the buffer of the TCP options. Therefore in the patch
we check that the available data length is large enough to parse both TCP
option code and size.
Reported-by: Baozeng Ding <sploving1@gmail.com>
Tested-by: Baozeng Ding <sploving1@gmail.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 017b1b6d28c479f1ad9a7a41f775545a3e1cba35 upstream.
nfacct_filter_alloc doesn't validate the NFACCT_FILTER_MASK and
NFACCT_FILTER_VALUE parameters which can trigger a NULL pointer
dereference. CAP_NET_ADMIN is required to trigger the bug.
Signed-off-by: Phil Turnbull <phil.turnbull@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit eb075954e9fde114f57adc39a9ea6d379c13f81e upstream.
This patch stops processing options for unknown command.
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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GET_ENTRIES
commit b301f2538759933cf9ff1f7c4f968da72e3f0757 upstream.
Make sure the table names via getsockopt GET_ENTRIES is nul-terminated
in ebtables and all the x_tables variants and their respective compat
code. Uncovered by KASAN.
Reported-by: Baozeng Ding <sploving1@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 30c7be26fd3587abcb69587f781098e3ca2d565b upstream.
In commits 93821778def10 ("udp: Fix rcv socket locking") and
f7ad74fef3af ("net/ipv6/udp: UDP encapsulation: break backlog_rcv into
__udpv6_queue_rcv_skb") UDP backlog handlers were renamed, but UDPlite
was forgotten.
This leads to crashes if UDPlite header is pulled twice, which happens
starting from commit e6afc8ace6dd ("udp: remove headers from UDP packets
before queueing")
Bug found by syzkaller team, thanks a lot guys !
Note that backlog use in UDP/UDPlite is scheduled to be removed starting
from linux-4.10, so this patch is only needed up to linux-4.9
Fixes: 93821778def1 ("udp: Fix rcv socket locking")
Fixes: f7ad74fef3af ("net/ipv6/udp: UDP encapsulation: break backlog_rcv into __udpv6_queue_rcv_skb")
Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 53ab60baa1ac4f20b080a22c13b77b6373922fd7 ]
There is a UBSAN bug report as below:
UBSAN: Undefined behaviour in net/netfilter/ipvs/ip_vs_ctl.c:2227:21
signed integer overflow:
-2147483647 * 1000 cannot be represented in type 'int'
Reproduce program:
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#define IPPROTO_IP 0
#define IPPROTO_RAW 255
#define IP_VS_BASE_CTL (64+1024+64)
#define IP_VS_SO_SET_TIMEOUT (IP_VS_BASE_CTL+10)
/* The argument to IP_VS_SO_GET_TIMEOUT */
struct ipvs_timeout_t {
int tcp_timeout;
int tcp_fin_timeout;
int udp_timeout;
};
int main() {
int ret = -1;
int sockfd = -1;
struct ipvs_timeout_t to;
sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
if (sockfd == -1) {
printf("socket init error\n");
return -1;
}
to.tcp_timeout = -2147483647;
to.tcp_fin_timeout = -2147483647;
to.udp_timeout = -2147483647;
ret = setsockopt(sockfd,
IPPROTO_IP,
IP_VS_SO_SET_TIMEOUT,
(char *)(&to),
sizeof(to));
printf("setsockopt return %d\n", ret);
return ret;
}
Return -EINVAL if the timeout value is negative or max than 'INT_MAX / HZ'.
Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit dd9ee3444014e8f28c0eefc9fffc9ac9c5248c12 ]
Recently we run a network test over ipcomp virtual tunnel.We find that
if a ipv4 packet needs fragment, then the peer can't receive
it.
We deep into the code and find that when packet need fragment the smaller
fragment will be encapsulated by ipip not ipcomp. So when the ipip packet
goes into xfrm, it's skb->dev is not properly set. The ipv4 reassembly code
always set skb'dev to the last fragment's dev. After ipv4 defrag processing,
when the kernel rp_filter parameter is set, the skb will be drop by -EXDEV
error.
This patch adds compatible support for the ipip process in ipcomp virtual tunnel.
Signed-off-by: Su Yanjun <suyj.fnst@cn.fujitsu.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 87c11f1ddbbad38ad8bad47af133a8208985fbdf ]
Similar to commit 44f49dd8b5a6 ("ipmr: fix possible race resulting from
improper usage of IP_INC_STATS_BH() in preemptible context."), we cannot
assume preemption is disabled when incrementing the counter and
accessing a per-CPU variable.
Preemption can be enabled when we add a route in process context that
corresponds to packets stored in the unresolved queue, which are then
forwarded using this route [1].
Fix this by using IP6_INC_STATS() which takes care of disabling
preemption on architectures where it is needed.
[1]
[ 157.451447] BUG: using __this_cpu_add() in preemptible [00000000] code: smcrouted/2314
[ 157.460409] caller is ip6mr_forward2+0x73e/0x10e0
[ 157.460434] CPU: 3 PID: 2314 Comm: smcrouted Not tainted 5.0.0-rc7-custom-03635-g22f2712113f1 #1336
[ 157.460449] Hardware name: Mellanox Technologies Ltd. MSN2100-CB2FO/SA001017, BIOS 5.6.5 06/07/2016
[ 157.460461] Call Trace:
[ 157.460486] dump_stack+0xf9/0x1be
[ 157.460553] check_preemption_disabled+0x1d6/0x200
[ 157.460576] ip6mr_forward2+0x73e/0x10e0
[ 157.460705] ip6_mr_forward+0x9a0/0x1510
[ 157.460771] ip6mr_mfc_add+0x16b3/0x1e00
[ 157.461155] ip6_mroute_setsockopt+0x3cb/0x13c0
[ 157.461384] do_ipv6_setsockopt.isra.8+0x348/0x4060
[ 157.462013] ipv6_setsockopt+0x90/0x110
[ 157.462036] rawv6_setsockopt+0x4a/0x120
[ 157.462058] __sys_setsockopt+0x16b/0x340
[ 157.462198] __x64_sys_setsockopt+0xbf/0x160
[ 157.462220] do_syscall_64+0x14d/0x610
[ 157.462349] entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes: 0912ea38de61 ("[IPV6] MROUTE: Add stats in multicast routing module method ip6_mr_forward().")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 5578de4834fe0f2a34fedc7374be691443396d1f ]
There are two array out-of-bounds memory accesses, one in
cipso_v4_map_lvl_valid(), the other in netlbl_bitmap_walk(). Both
errors are embarassingly simple, and the fixes are straightforward.
As a FYI for anyone backporting this patch to kernels prior to v4.8,
you'll want to apply the netlbl_bitmap_walk() patch to
cipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before
Linux v4.8.
Reported-by: Jann Horn <jannh@google.com>
Fixes: 446fda4f2682 ("[NetLabel]: CIPSOv4 engine")
Fixes: 3faa8f982f95 ("netlabel: Move bitmap manipulation functions to the NetLabel core.")
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 3da1ed7ac398f34fff1694017a07054d69c5f5c5 ]
Extract IP options in cipso_v4_error and use __icmp_send.
Signed-off-by: Sergey Nazarov <s-nazarov@yandex.ru>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 9ef6b42ad6fd7929dd1b6092cb02014e382c6a91 ]
Add __icmp_send function having ip_options struct parameter
Signed-off-by: Sergey Nazarov <s-nazarov@yandex.ru>
Reviewed-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 58bdd544e2933a21a51eecf17c3f5f94038261b5 ]
KASAN report this:
BUG: KASAN: null-ptr-deref in nfc_llcp_build_gb+0x37f/0x540 [nfc]
Read of size 3 at addr 0000000000000000 by task syz-executor.0/5401
CPU: 0 PID: 5401 Comm: syz-executor.0 Not tainted 5.0.0-rc7+ #45
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xfa/0x1ce lib/dump_stack.c:113
kasan_report+0x171/0x18d mm/kasan/report.c:321
memcpy+0x1f/0x50 mm/kasan/common.c:130
nfc_llcp_build_gb+0x37f/0x540 [nfc]
nfc_llcp_register_device+0x6eb/0xb50 [nfc]
nfc_register_device+0x50/0x1d0 [nfc]
nfcsim_device_new+0x394/0x67d [nfcsim]
? 0xffffffffc1080000
nfcsim_init+0x6b/0x1000 [nfcsim]
do_one_initcall+0xfa/0x5ca init/main.c:887
do_init_module+0x204/0x5f6 kernel/module.c:3460
load_module+0x66b2/0x8570 kernel/module.c:3808
__do_sys_finit_module+0x238/0x2a0 kernel/module.c:3902
do_syscall_64+0x147/0x600 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462e99
Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9cb79dcc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 000000000073bf00 RCX: 0000000000462e99
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003
RBP: 00007f9cb79dcc70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9cb79dd6bc
R13: 00000000004bcefb R14: 00000000006f7030 R15: 0000000000000004
nfc_llcp_build_tlv will return NULL on fails, caller should check it,
otherwise will trigger a NULL dereference.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: eda21f16a5ed ("NFC: Set MIU and RW values from CONNECT and CC LLCP frames")
Fixes: d646960f7986 ("NFC: Initial LLCP support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 895a5e96dbd6386c8e78e5b78e067dcc67b7f0ab ]
syzkaller report this:
BUG: memory leak
unreferenced object 0xffff88837a71a500 (size 256):
comm "syz-executor.2", pid 9770, jiffies 4297825125 (age 17.843s)
hex dump (first 32 bytes):
00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........
ff ff ff ff ff ff ff ff 20 c0 ef 86 ff ff ff ff ........ .......
backtrace:
[<00000000db12624b>] netdev_register_kobject+0x124/0x2e0 net/core/net-sysfs.c:1751
[<00000000dc49a994>] register_netdevice+0xcc1/0x1270 net/core/dev.c:8516
[<00000000e5f3fea0>] tun_set_iff drivers/net/tun.c:2649 [inline]
[<00000000e5f3fea0>] __tun_chr_ioctl+0x2218/0x3d20 drivers/net/tun.c:2883
[<000000001b8ac127>] vfs_ioctl fs/ioctl.c:46 [inline]
[<000000001b8ac127>] do_vfs_ioctl+0x1a5/0x10e0 fs/ioctl.c:690
[<0000000079b269f8>] ksys_ioctl+0x89/0xa0 fs/ioctl.c:705
[<00000000de649beb>] __do_sys_ioctl fs/ioctl.c:712 [inline]
[<00000000de649beb>] __se_sys_ioctl fs/ioctl.c:710 [inline]
[<00000000de649beb>] __x64_sys_ioctl+0x74/0xb0 fs/ioctl.c:710
[<000000007ebded1e>] do_syscall_64+0xc8/0x580 arch/x86/entry/common.c:290
[<00000000db315d36>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<00000000115be9bb>] 0xffffffffffffffff
It should call kset_unregister to free 'dev->queues_kset'
in error path of register_queue_kobjects, otherwise will cause a mem leak.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 1d24eb4815d1 ("xps: Transmit Packet Steering")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 971df15bd54ad46e907046ff33750a137b2f0096 upstream.
The standard return value for unsupported attribute names is
-EOPNOTSUPP, as opposed to undefined but supported attributes
(-ENODATA).
Also, fail for attribute names like "system.sockprotonameXXX" and
simplify the code a bit.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[removes a build warning on 4.4.y - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 93183bdbe73bbdd03e9566c8dc37c9d06b0d0db6 ]
Recently, DMG frequency bands have been extended till 71GHz, so extend
the range check till 20GHz (45-71GHZ), else some channels will be marked
as disabled.
Signed-off-by: Chaitanya Tata <Chaitanya.Tata@bluwireless.co.uk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 7ed5285396c257fd4070b1e29e7b2341aae2a1ce ]
Following call trace is observed while adding TDLS peer entry in driver
during TDLS setup.
Call Trace:
[<c1301476>] dump_stack+0x47/0x61
[<c10537d2>] __warn+0xe2/0x100
[<fa22415f>] ? sta_apply_parameters+0x49f/0x550 [mac80211]
[<c1053895>] warn_slowpath_null+0x25/0x30
[<fa22415f>] sta_apply_parameters+0x49f/0x550 [mac80211]
[<fa20ad42>] ? sta_info_alloc+0x1c2/0x450 [mac80211]
[<fa224623>] ieee80211_add_station+0xe3/0x160 [mac80211]
[<c1876fe3>] nl80211_new_station+0x273/0x420
[<c170f6d9>] genl_rcv_msg+0x219/0x3c0
[<c170f4c0>] ? genl_rcv+0x30/0x30
[<c170ee7e>] netlink_rcv_skb+0x8e/0xb0
[<c170f4ac>] genl_rcv+0x1c/0x30
[<c170e8aa>] netlink_unicast+0x13a/0x1d0
[<c170ec18>] netlink_sendmsg+0x2d8/0x390
[<c16c5acd>] sock_sendmsg+0x2d/0x40
[<c16c6369>] ___sys_sendmsg+0x1d9/0x1e0
Fixing this by allowing TDLS setup request only when we have completed
association.
Signed-off-by: Balaji Pothunoori <bpothuno@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit a0dc02039a2ee54fb4ae400e0b755ed30e73e58c ]
In ieee80211_rx_h_mesh_fwding, we increment the 'dropped_frames_ttl'
counter when we decrement the ttl to zero. For unicast frames
destined for other hosts, we stop processing the frame at that point.
For multicast frames, we do not rebroadcast it in this case, but we
do pass the frame up the stack to process it on this STA. That
doesn't match the usual definition of "dropped," so don't count
those as such.
With this change, something like `ping6 -i0.2 ff02::1%mesh0` from a
peer in a ttl=1 network no longer increments the counter rapidly.
Signed-off-by: Bob Copeland <bobcopeland@fb.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 0fd3fd0a9bb0b02b6435bb7070e9f7b82a23f068 upstream.
The authorize reply can be empty, for example when the ticket used to
build the authorizer is too old and TAG_BADAUTHORIZER is returned from
the service. Calling ->verify_authorizer_reply() results in an attempt
to decrypt and validate (somewhat) random data in au->buf (most likely
the signature block from calc_signature()), which fails and ends up in
con_fault_finish() with !con->auth_retry. The ticket isn't invalidated
and the connection is retried again and again until a new ticket is
obtained from the monitor:
libceph: osd2 192.168.122.1:6809 bad authorize reply
libceph: osd2 192.168.122.1:6809 bad authorize reply
libceph: osd2 192.168.122.1:6809 bad authorize reply
libceph: osd2 192.168.122.1:6809 bad authorize reply
Let TAG_BADAUTHORIZER handler kick in and increment con->auth_retry.
Cc: stable@vger.kernel.org
Fixes: 5c056fdc5b47 ("libceph: verify authorize reply on connect")
Link: https://tracker.ceph.com/issues/20164
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
[idryomov@gmail.com: backport to 4.4: extra arg, no CEPHX_V2]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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source 0.0.0.0"
commit 278e2148c07559dd4ad8602f22366d61eb2ee7b7 upstream.
This reverts commit 5a2de63fd1a5 ("bridge: do not add port to router list
when receives query with source 0.0.0.0") and commit 0fe5119e267f ("net:
bridge: remove ipv6 zero address check in mcast queries")
The reason is RFC 4541 is not a standard but suggestive. Currently we
will elect 0.0.0.0 as Querier if there is no ip address configured on
bridge. If we do not add the port which recives query with source
0.0.0.0 to router list, the IGMP reports will not be about to forward
to Querier, IGMP data will also not be able to forward to dest.
As Nikolay suggested, revert this change first and add a boolopt api
to disable none-zero election in future if needed.
Reported-by: Linus Lüssing <linus.luessing@c0d3.blue>
Reported-by: Sebastian Gottschall <s.gottschall@newmedia-net.de>
Fixes: 5a2de63fd1a5 ("bridge: do not add port to router list when receives query with source 0.0.0.0")
Fixes: 0fe5119e267f ("net: bridge: remove ipv6 zero address check in mcast queries")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 173656accaf583698bac3f9e269884ba60d51ef4 ]
If we disabled IPv6 from the kernel command line (ipv6.disable=1), we should
not call ip6_err_gen_icmpv6_unreach(). This:
ip link add sit1 type sit local 192.0.2.1 remote 192.0.2.2 ttl 1
ip link set sit1 up
ip addr add 198.51.100.1/24 dev sit1
ping 198.51.100.2
if IPv6 is disabled at boot time, will crash the kernel.
v2: there's no need to use in6_dev_get(), use __in6_dev_get() instead,
as we only need to check that idev exists and we are under
rcu_read_lock() (from netif_receive_skb_internal()).
Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: ca15a078bd90 ("sit: generate icmpv6 error when receiving icmpv4 error")
Cc: Oussama Ghorbel <ghorbel@pivasoftware.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit fc62814d690cf62189854464f4bd07457d5e9e50 ]
When calculating rb->frames_per_block * req->tp_block_nr the result
can overflow. Check it for overflow without limiting the total buffer
size to UINT_MAX.
This change fixes support for packet ring buffers >= UINT_MAX.
Fixes: 8f8d28e4d6d8 ("net/packet: fix overflow in check for tp_frame_nr")
Signed-off-by: Kal Conley <kal.conley@dectris.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 4ffcbfac60642f63ae3d80891f573ba7e94a265c ]
KMSAN reported batadv_interface_tx() was possibly using a
garbage value [1]
batadv_get_vid() does have a pskb_may_pull() call
but batadv_interface_tx() does not actually make sure
this did not fail.
[1]
BUG: KMSAN: uninit-value in batadv_interface_tx+0x908/0x1e40 net/batman-adv/soft-interface.c:231
CPU: 0 PID: 10006 Comm: syz-executor469 Not tainted 4.20.0-rc7+ #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x173/0x1d0 lib/dump_stack.c:113
kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:613
__msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:313
batadv_interface_tx+0x908/0x1e40 net/batman-adv/soft-interface.c:231
__netdev_start_xmit include/linux/netdevice.h:4356 [inline]
netdev_start_xmit include/linux/netdevice.h:4365 [inline]
xmit_one net/core/dev.c:3257 [inline]
dev_hard_start_xmit+0x607/0xc40 net/core/dev.c:3273
__dev_queue_xmit+0x2e42/0x3bc0 net/core/dev.c:3843
dev_queue_xmit+0x4b/0x60 net/core/dev.c:3876
packet_snd net/packet/af_packet.c:2928 [inline]
packet_sendmsg+0x8306/0x8f30 net/packet/af_packet.c:2953
sock_sendmsg_nosec net/socket.c:621 [inline]
sock_sendmsg net/socket.c:631 [inline]
__sys_sendto+0x8c4/0xac0 net/socket.c:1788
__do_sys_sendto net/socket.c:1800 [inline]
__se_sys_sendto+0x107/0x130 net/socket.c:1796
__x64_sys_sendto+0x6e/0x90 net/socket.c:1796
do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x441889
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 bb 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffdda6fd468 EFLAGS: 00000216 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000441889
RDX: 000000000000000e RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 00007ffdda6fd4c0
R13: 00007ffdda6fd4b0 R14: 0000000000000000 R15: 0000000000000000
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:204 [inline]
kmsan_internal_poison_shadow+0x92/0x150 mm/kmsan/kmsan.c:158
kmsan_kmalloc+0xa6/0x130 mm/kmsan/kmsan_hooks.c:176
kmsan_slab_alloc+0xe/0x10 mm/kmsan/kmsan_hooks.c:185
slab_post_alloc_hook mm/slab.h:446 [inline]
slab_alloc_node mm/slub.c:2759 [inline]
__kmalloc_node_track_caller+0xe18/0x1030 mm/slub.c:4383
__kmalloc_reserve net/core/skbuff.c:137 [inline]
__alloc_skb+0x309/0xa20 net/core/skbuff.c:205
alloc_skb include/linux/skbuff.h:998 [inline]
alloc_skb_with_frags+0x1c7/0xac0 net/core/skbuff.c:5220
sock_alloc_send_pskb+0xafd/0x10e0 net/core/sock.c:2083
packet_alloc_skb net/packet/af_packet.c:2781 [inline]
packet_snd net/packet/af_packet.c:2872 [inline]
packet_sendmsg+0x661a/0x8f30 net/packet/af_packet.c:2953
sock_sendmsg_nosec net/socket.c:621 [inline]
sock_sendmsg net/socket.c:631 [inline]
__sys_sendto+0x8c4/0xac0 net/socket.c:1788
__do_sys_sendto net/socket.c:1800 [inline]
__se_sys_sendto+0x107/0x130 net/socket.c:1796
__x64_sys_sendto+0x6e/0x90 net/socket.c:1796
do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
entry_SYSCALL_64_after_hwframe+0x63/0xe7
Fixes: c6c8fea29769 ("net: Add batman-adv meshing protocol")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Marek Lindner <mareklindner@neomailbox.ch>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Cc: Antonio Quartulli <a@unstable.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This interface allows the host driver to offload OWE processing to
user space. This intends to support OWE/Enhanced Open AKM by the host
drivers that implement SME but rely on the user space for
the crypotographic/OWE processing.Such drivers are not capable of
processing/deriving the DH IE's.
This interface acts as both the event from the driver to userspace
and a command from userspace to the driver.
Host driver shall use the event to notify the OWE info of the peer
to the userspace for the cryptographic processing of the DH ie's.
Accordingly, the userspace shall update the OWE info/DH ie's to
the host driver corresponding to the peer.
Above sequence aims for the AP mode where the event carries the
OWE info of the peer(STA) obtained in the Assoc Request.
The request interface from the userspace shall update the OWE
info to the host driver, which is used to send the Assoc response
to the peer.
This OWE info in the command interface shall contain the ie's which
either include the pmkid of the peer if the PMKSA is still valid or
an updated DH ie's for generating a new PMKSA with the peer.
Change-Id: Id5a2e800bdae1ea31a20a062d012cc33e5a3c6a3
CRs-Fixed: 2414077
Signed-off-by: Liangwei Dong <liangwei@codeaurora.org>
Signed-off-by: Sunil Dutt <usdutt@codeaurora.org>
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