| Commit message (Collapse) | Author | Age |
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Add API to Block/Unblock modem graceful shutdown.
Change-Id: I69b061fc7d25762b2c36d9590802addfc170f91f
Signed-off-by: Sandeep Singh <sandsing@codeaurora.org>
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Define proto functions for non glink targets.
Change-Id: Ie9eb32fe9af70d078d8ddc915c998d49e89b79c1
Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>
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Define macro to indicate backport support for
DH IE update.
Change-Id: Ib39032cab976fa465e417c9d1f6193306ea78565
CRs-Fixed: 2415038
Signed-off-by: Liangwei Dong <liangwei@codeaurora.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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* refs/heads/tmp-cf84cdc
Linux 4.4.176
KVM: VMX: Fix x2apic check in vmx_msr_bitmap_mode()
ax25: fix possible use-after-free
mISDN: fix a race in dev_expire_timer()
net/x25: do not hold the cpu too long in x25_new_lci()
mfd: as3722: Mark PM functions as __maybe_unused
mfd: as3722: Handle interrupts on suspend
kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)
x86: livepatch: Treat R_X86_64_PLT32 as R_X86_64_PC32
net: ipv4: use a dedicated counter for icmp_v4 redirect packets
net: stmmac: Fix a race in EEE enable callback
vxlan: test dev->flags & IFF_UP before calling netif_rx()
tcp: clear icsk_backoff in tcp_write_queue_purge()
net: Do not allocate page fragments that are not skb aligned
tcp: tcp_v4_err() should be more careful
net: Add header for usage of fls64()
sky2: Increase D3 delay again
net: Fix for_each_netdev_feature on Big endian
hwmon: (lm80) Fix missing unlock on error in set_fan_div()
vsock: cope with memory allocation failure at socket creation time
net: fix IPv6 prefix route residue
Change-Id: I73009b0e908406e13fe1ce87f9dbe3341f70af98
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.176
net: fix IPv6 prefix route residue
vsock: cope with memory allocation failure at socket creation time
hwmon: (lm80) Fix missing unlock on error in set_fan_div()
net: Fix for_each_netdev_feature on Big endian
sky2: Increase D3 delay again
net: Add header for usage of fls64()
tcp: tcp_v4_err() should be more careful
net: Do not allocate page fragments that are not skb aligned
tcp: clear icsk_backoff in tcp_write_queue_purge()
vxlan: test dev->flags & IFF_UP before calling netif_rx()
net: stmmac: Fix a race in EEE enable callback
net: ipv4: use a dedicated counter for icmp_v4 redirect packets
x86: livepatch: Treat R_X86_64_PLT32 as R_X86_64_PC32
kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)
mfd: as3722: Handle interrupts on suspend
mfd: as3722: Mark PM functions as __maybe_unused
net/x25: do not hold the cpu too long in x25_new_lci()
mISDN: fix a race in dev_expire_timer()
ax25: fix possible use-after-free
KVM: VMX: Fix x2apic check in vmx_msr_bitmap_mode()
Linux 4.4.176
Change-Id: I04f3fbccfda85580720628f6415548d3e34781cc
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 63530aba7826a0f8e129874df9c4d264f9db3f9e upstream.
syzbot found that ax25 routes where not properly protected
against concurrent use [1].
In this particular report the bug happened while
copying ax25->digipeat.
Fix this problem by making sure we call ax25_get_route()
while ax25_route_lock is held, so that no modification
could happen while using the route.
The current two ax25_get_route() callers do not sleep,
so this change should be fine.
Once we do that, ax25_get_route() no longer needs to
grab a reference on the found route.
[1]
ax25_connect(): syz-executor0 uses autobind, please contact jreuter@yaina.de
BUG: KASAN: use-after-free in memcpy include/linux/string.h:352 [inline]
BUG: KASAN: use-after-free in kmemdup+0x42/0x60 mm/util.c:113
Read of size 66 at addr ffff888066641a80 by task syz-executor2/531
ax25_connect(): syz-executor0 uses autobind, please contact jreuter@yaina.de
CPU: 1 PID: 531 Comm: syz-executor2 Not tainted 5.0.0-rc2+ #10
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+0x1db/0x2d0 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+0x24/0x50 mm/kasan/common.c:130
memcpy include/linux/string.h:352 [inline]
kmemdup+0x42/0x60 mm/util.c:113
kmemdup include/linux/string.h:425 [inline]
ax25_rt_autobind+0x25d/0x750 net/ax25/ax25_route.c:424
ax25_connect.cold+0x30/0xa4 net/ax25/af_ax25.c:1224
__sys_connect+0x357/0x490 net/socket.c:1664
__do_sys_connect net/socket.c:1675 [inline]
__se_sys_connect net/socket.c:1672 [inline]
__x64_sys_connect+0x73/0xb0 net/socket.c:1672
do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f870ee22c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458099
RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
ax25_connect(): syz-executor4 uses autobind, please contact jreuter@yaina.de
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f870ee236d4
R13: 00000000004be48e R14: 00000000004ce9a8 R15: 00000000ffffffff
Allocated by task 526:
save_stack+0x45/0xd0 mm/kasan/common.c:73
set_track mm/kasan/common.c:85 [inline]
__kasan_kmalloc mm/kasan/common.c:496 [inline]
__kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:469
kasan_kmalloc+0x9/0x10 mm/kasan/common.c:504
ax25_connect(): syz-executor5 uses autobind, please contact jreuter@yaina.de
kmem_cache_alloc_trace+0x151/0x760 mm/slab.c:3609
kmalloc include/linux/slab.h:545 [inline]
ax25_rt_add net/ax25/ax25_route.c:95 [inline]
ax25_rt_ioctl+0x3b9/0x1270 net/ax25/ax25_route.c:233
ax25_ioctl+0x322/0x10b0 net/ax25/af_ax25.c:1763
sock_do_ioctl+0xe2/0x400 net/socket.c:950
sock_ioctl+0x32f/0x6c0 net/socket.c:1074
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0x107b/0x17d0 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+0x1a3/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
ax25_connect(): syz-executor5 uses autobind, please contact jreuter@yaina.de
Freed by task 550:
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:458
kasan_slab_free+0xe/0x10 mm/kasan/common.c:466
__cache_free mm/slab.c:3487 [inline]
kfree+0xcf/0x230 mm/slab.c:3806
ax25_rt_add net/ax25/ax25_route.c:92 [inline]
ax25_rt_ioctl+0x304/0x1270 net/ax25/ax25_route.c:233
ax25_ioctl+0x322/0x10b0 net/ax25/af_ax25.c:1763
sock_do_ioctl+0xe2/0x400 net/socket.c:950
sock_ioctl+0x32f/0x6c0 net/socket.c:1074
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0x107b/0x17d0 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+0x1a3/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at ffff888066641a80
which belongs to the cache kmalloc-96 of size 96
The buggy address is located 0 bytes inside of
96-byte region [ffff888066641a80, ffff888066641ae0)
The buggy address belongs to the page:
page:ffffea0001999040 count:1 mapcount:0 mapping:ffff88812c3f04c0 index:0x0
flags: 0x1fffc0000000200(slab)
ax25_connect(): syz-executor4 uses autobind, please contact jreuter@yaina.de
raw: 01fffc0000000200 ffffea0001817948 ffffea0002341dc8 ffff88812c3f04c0
raw: 0000000000000000 ffff888066641000 0000000100000020 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888066641980: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff888066641a00: 00 00 00 00 00 00 00 00 02 fc fc fc fc fc fc fc
>ffff888066641a80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
^
ffff888066641b00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff888066641b80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
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 c09551c6ff7fe16a79a42133bcecba5fc2fc3291 ]
According to the algorithm described in the comment block at the
beginning of ip_rt_send_redirect, the host should try to send
'ip_rt_redirect_number' ICMP redirect packets with an exponential
backoff and then stop sending them at all assuming that the destination
ignores redirects.
If the device has previously sent some ICMP error packets that are
rate-limited (e.g TTL expired) and continues to receive traffic,
the redirect packets will never be transmitted. This happens since
peer->rate_tokens will be typically greater than 'ip_rt_redirect_number'
and so it will never be reset even if the redirect silence timeout
(ip_rt_redirect_silence) has elapsed without receiving any packet
requiring redirects.
Fix it by using a dedicated counter for the number of ICMP redirect
packets that has been sent by the host
I have not been able to identify a given commit that introduced the
issue since ip_rt_send_redirect implements the same rate-limiting
algorithm from commit 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@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 04c03114be82194d4a4858d41dba8e286ad1787c ]
soukjin bae reported a crash in tcp_v4_err() handling
ICMP_DEST_UNREACH after tcp_write_queue_head(sk)
returned a NULL pointer.
Current logic should have prevented this :
if (seq != tp->snd_una || !icsk->icsk_retransmits ||
!icsk->icsk_backoff || fastopen)
break;
Problem is the write queue might have been purged
and icsk_backoff has not been cleared.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: soukjin bae <soukjin.bae@samsung.com>
Acked-by: Neal Cardwell <ncardwell@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 8681ef1f3d295bd3600315325f3b3396d76d02f6 ]
Fixes: 3b89ea9c5902 ("net: Fix for_each_netdev_feature on Big endian")
Suggested-by: Eric Dumazet <eric.dumazet@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 3b89ea9c5902acccdbbdec307c85edd1bf52515e ]
The features attribute is of type u64 and stored in the native endianes on
the system. The for_each_set_bit() macro takes a pointer to a 32 bit array
and goes over the bits in this area. On little Endian systems this also
works with an u64 as the most significant bit is on the highest address,
but on big endian the words are swapped. When we expect bit 15 here we get
bit 47 (15 + 32).
This patch converts it more or less to its own for_each_set_bit()
implementation which works on 64 bit integers directly. This is then
completely in host endianness and should work like expected.
Fixes: fd867d51f ("net/core: generic support for disabling netdev features down stack")
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Host drivers may offload authentication to the user space
through the commit ("cfg80211: Authentication offload to
user space in AP mode").
This interface can be used to implement SAE by having the
userspace do authentication/PMKID key derivation and driver
handle the association.
A step ahead, this interface can get further optimized if the
PMKID is passed to the host driver and also have it respond to
the association request by the STA on a valid PMKID.
This commit enables the userspace to pass the PMKID to the host
drivers through the set/del pmksa operations in AP mode.
Set/Del pmksa is now restricted to STA/P2P client mode only and
thus the drivers might not expect them in any other(AP) mode.
This commit also introduces a feature flag
NL80211_EXT_FEATURE_AP_PMKSA_CACHING (johannes: renamed) to
maintain the backward compatibility of such an expectation by
the host drivers. These operations are allowed in AP mode only
when the drivers advertize the capability through this flag.
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
[rename flag to NL80211_EXT_FEATURE_AP_PMKSA_CACHING]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 6c900360e7c0df6a4846ac97d7b548d72cd801b0
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
CRs-Fixed: 2396953
Change-Id: I967ec287edb1c685614e965fe67a32e35035ff11
Signed-off-by: Liangwei Dong <liangwei@codeaurora.org>
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Update header for nl80211 nl80211_ext_feature_index and
nl80211_commands enum from master branch of upstream repoistory
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
which includes the following changes (with changes to extract
"enum" value change only):
91b5ab62892 cfg80211: support 4-way handshake offloading for WPA/WPA2-PSK
3a00df5707b cfg80211: support 4-way handshake offloading for 802.1X
2d23d0736e3 nl80211: add OCE scan and capability flags
65026002d69 nl80211: add an option to allow MFP without requiring it
5037a00992e nl80211: Introduce scan flags to emphasize requested scan
behavior
13cf6dec93e cfg80211/nl80211: add DFS offload flag
2576a9ace47 nl80211: Implement TX of control port frames
9c06602b1b9 cfg80211: clarify frames covered by average ACK signal report
52539ca89f3 cfg80211: Expose TXQ stats and parameters to userspace
2e076f19909 nl80211: add scan features for improved scan privac
2b815b04dfe nl80211: Add CAN_REPLACE_PTK0 API
81e54d08d9d cfg80211: support FTM responder configuration/statistics
36647055b37 cfg80211: Add airtime statistics and settings
466b9936bf9 cfg80211: Add support to notify station's opmode change to
userspace
6a671a50f81 nl80211: Add CMD_CONTROL_PORT_FRAME API
9bb7e0f24e7 cfg80211: add peer measurement with FTM initiator API
30c63115e20 nl80211: Add support to notify radar event info received from
STA
CRs-Fixed: 2396941
Change-Id: I976a9177b9dd705c6131a3a9a62d64432e3d715a
Signed-off-by: Liangwei Dong <liangwei@codeaurora.org>
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For some time critical tasks, the thread priority
might need to be upgraded to Real-Time Thread
priority level. Expose an interface from APR layer
so that clients can vote for a priority upgrade
whenever needed.
Change-Id: Ieb4afa914905750eccdf7672020a8751fdcf6462
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Soumya Managoli <smanag@codeaurora.org>
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Define macro to indicate backport support for external
authentication in AP mode where authentication can be
offloaded to user space in specific cases such as SAE.
Change-Id: I9f8c5861e83308a547f1ee71adb0dab5185a0d6d
CRs-Fixed: 2402092
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
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* refs/heads/tmp-08d5867
Linux 4.4.175
uapi/if_ether.h: move __UAPI_DEF_ETHHDR libc define
pinctrl: msm: fix gpio-hog related boot issues
usb: dwc2: Remove unnecessary kfree
kaweth: use skb_cow_head() to deal with cloned skbs
ch9200: use skb_cow_head() to deal with cloned skbs
smsc95xx: Use skb_cow_head to deal with cloned skbs
dm thin: fix bug where bio that overwrites thin block ignores FUA
x86/a.out: Clear the dump structure initially
signal: Restore the stop PTRACE_EVENT_EXIT
x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
tracing/uprobes: Fix output for multiple string arguments
alpha: Fix Eiger NR_IRQS to 128
alpha: fix page fault handling for r16-r18 targets
Input: elantech - enable 3rd button support on Fujitsu CELSIUS H780
Input: bma150 - register input device after setting private data
ALSA: usb-audio: Fix implicit fb endpoint setup by quirk
ALSA: hda - Add quirk for HP EliteBook 840 G5
perf/core: Fix impossible ring-buffer sizes warning
Input: elan_i2c - add ACPI ID for touchpad in Lenovo V330-15ISK
Revert "Input: elan_i2c - add ACPI ID for touchpad in ASUS Aspire F5-573G"
Documentation/network: reword kernel version reference
cifs: Limit memory used by lock request calls to a page
gpio: pl061: handle failed allocations
ARM: dts: kirkwood: Fix polarity of GPIO fan lines
ARM: dts: da850-evm: Correct the sound card name
uapi/if_ether.h: prevent redefinition of struct ethhdr
Revert "exec: load_script: don't blindly truncate shebang string"
batman-adv: Force mac header to start of data on xmit
batman-adv: Avoid WARN on net_device without parent in netns
xfrm: refine validation of template and selector families
libceph: avoid KEEPALIVE_PENDING races in ceph_con_keepalive()
Revert "cifs: In Kconfig CONFIG_CIFS_POSIX needs depends on legacy (insecure cifs)"
NFC: nxp-nci: Include unaligned.h instead of access_ok.h
HID: debug: fix the ring buffer implementation
drm/vmwgfx: Return error code from vmw_execbuf_copy_fence_user
drm/vmwgfx: Fix setting of dma masks
drm/modes: Prevent division by zero htotal
mac80211: ensure that mgmt tx skbs have tailroom for encryption
ARM: iop32x/n2100: fix PCI IRQ mapping
MIPS: VDSO: Include $(ccflags-vdso) in o32,n32 .lds builds
MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled
mips: cm: reprime error cause
debugfs: fix debugfs_rename parameter checking
misc: vexpress: Off by one in vexpress_syscfg_exec()
signal: Better detection of synchronous signals
signal: Always notice exiting tasks
mtd: rawnand: gpmi: fix MX28 bus master lockup problem
perf tests evsel-tp-sched: Fix bitwise operator
perf/core: Don't WARN() for impossible ring-buffer sizes
x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()
perf/x86/intel/uncore: Add Node ID mask
KVM: nVMX: unconditionally cancel preemption timer in free_nested (CVE-2019-7221)
KVM: x86: work around leak of uninitialized stack contents (CVE-2019-7222)
usb: gadget: udc: net2272: Fix bitwise and boolean operations
usb: phy: am335x: fix race condition in _probe
dmaengine: imx-dma: fix wrong callback invoke
fuse: handle zero sized retrieve correctly
fuse: decrement NR_WRITEBACK_TEMP on the right page
fuse: call pipe_buf_release() under pipe lock
ALSA: hda - Serialize codec registrations
ALSA: compress: Fix stop handling on compressed capture streams
net: dsa: slave: Don't propagate flag changes on down slave interfaces
net: systemport: Fix WoL with password after deep sleep
skge: potential memory corruption in skge_get_regs()
net: dp83640: expire old TX-skb
enic: fix checksum validation for IPv6
dccp: fool proof ccid_hc_[rt]x_parse_options()
string: drop __must_check from strscpy() and restore strscpy() usages in cgroup
tipc: use destination length for copy string
test_hexdump: use memcpy instead of strncpy
thermal: hwmon: inline helpers when CONFIG_THERMAL_HWMON is not set
exec: load_script: don't blindly truncate shebang string
fs/epoll: drop ovflist branch prediction
kernel/hung_task.c: break RCU locks based on jiffies
HID: lenovo: Add checks to fix of_led_classdev_register
block/swim3: Fix -EBUSY error when re-opening device after unmount
gdrom: fix a memory leak bug
isdn: hisax: hfc_pci: Fix a possible concurrency use-after-free bug in HFCPCI_l1hw()
ocfs2: don't clear bh uptodate for block read
scripts/decode_stacktrace: only strip base path when a prefix of the path
niu: fix missing checks of niu_pci_eeprom_read
um: Avoid marking pages with "changed protection"
cifs: check ntwrk_buf_start for NULL before dereferencing it
crypto: ux500 - Use proper enum in hash_set_dma_transfer
crypto: ux500 - Use proper enum in cryp_set_dma_transfer
seq_buf: Make seq_buf_puts() null-terminate the buffer
hwmon: (lm80) fix a missing check of bus read in lm80 probe
hwmon: (lm80) fix a missing check of the status of SMBus read
NFS: nfs_compare_mount_options always compare auth flavors.
KVM: x86: svm: report MSR_IA32_MCG_EXT_CTL as unsupported
fbdev: fbcon: Fix unregister crash when more than one framebuffer
igb: Fix an issue that PME is not enabled during runtime suspend
fbdev: fbmem: behave better with small rotated displays and many CPUs
video: clps711x-fb: release disp device node in probe()
drbd: Avoid Clang warning about pointless switch statment
drbd: skip spurious timeout (ping-timeo) when failing promote
drbd: disconnect, if the wrong UUIDs are attached on a connected peer
drbd: narrow rcu_read_lock in drbd_sync_handshake
cw1200: Fix concurrency use-after-free bugs in cw1200_hw_scan()
Bluetooth: Fix unnecessary error message for HCI request completion
xfrm6_tunnel: Fix spi check in __xfrm6_tunnel_alloc_spi
mac80211: fix radiotap vendor presence bitmap handling
powerpc/uaccess: fix warning/error with access_ok()
arm64: KVM: Skip MMIO insn after emulation
tty: serial: samsung: Properly set flags in autoCTS mode
memstick: Prevent memstick host from getting runtime suspended during card detection
ASoC: fsl: Fix SND_SOC_EUKREA_TLV320 build error on i.MX8M
ARM: pxa: avoid section mismatch warning
udf: Fix BUG on corrupted inode
i2c-axxia: check for error conditions first
cpuidle: big.LITTLE: fix refcount leak
clk: imx6sl: ensure MMDC CH0 handshake is bypassed
sata_rcar: fix deferred probing
iommu/arm-smmu-v3: Use explicit mb() when moving cons pointer
mips: bpf: fix encoding bug for mm_srlv32_op
ARM: dts: Fix OMAP4430 SDP Ethernet startup
timekeeping: Use proper seqcount initializer
usb: hub: delay hub autosuspend if USB3 port is still link training
smack: fix access permissions for keyring
media: DaVinci-VPBE: fix error handling in vpbe_initialize()
x86/fpu: Add might_fault() to user_insn()
ARM: dts: mmp2: fix TWSI2
arm64: ftrace: don't adjust the LR value
nfsd4: fix crash on writing v4_end_grace before nfsd startup
sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN
f2fs: fix wrong return value of f2fs_acl_create
f2fs: move dir data flush to write checkpoint process
soc/tegra: Don't leak device tree node reference
perf tools: Add Hygon Dhyana support
modpost: validate symbol names also in find_elf_symbol
ARM: OMAP2+: hwmod: Fix some section annotations
staging: iio: ad7780: update voltage on read
staging:iio:ad2s90: Make probe handle spi_setup failure
ptp: check gettime64 return code in PTP_SYS_OFFSET ioctl
serial: fsl_lpuart: clear parity enable bit when disable parity
powerpc/pseries: add of_node_put() in dlpar_detach_node()
x86/PCI: Fix Broadcom CNB20LE unintended sign extension (redux)
dlm: Don't swamp the CPU with callbacks queued during recovery
ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
scsi: lpfc: Correct LCB RJT handling
ASoC: Intel: mrfld: fix uninitialized variable access
staging: iio: adc: ad7280a: handle error from __ad7280_read32()
drm/bufs: Fix Spectre v1 vulnerability
BACKPORT: userfaultfd: shmem/hugetlbfs: only allow to register VM_MAYWRITE vmas
ANDROID: cuttlefish_defconfig: Enable DEBUG_SET_MODULE_RONX
ANDROID: Move from clang r346389b to r349610.
UPSTREAM: virt_wifi: fix error return code in virt_wifi_newlink()
ion: Disable ION_HEAP_TYPE_SYSTEM_CONTIG
Change-Id: I8456a2f1d229a2d454295d660f749a2b436c6440
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.175
drm/bufs: Fix Spectre v1 vulnerability
staging: iio: adc: ad7280a: handle error from __ad7280_read32()
ASoC: Intel: mrfld: fix uninitialized variable access
scsi: lpfc: Correct LCB RJT handling
ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
dlm: Don't swamp the CPU with callbacks queued during recovery
x86/PCI: Fix Broadcom CNB20LE unintended sign extension (redux)
powerpc/pseries: add of_node_put() in dlpar_detach_node()
serial: fsl_lpuart: clear parity enable bit when disable parity
ptp: check gettime64 return code in PTP_SYS_OFFSET ioctl
staging:iio:ad2s90: Make probe handle spi_setup failure
staging: iio: ad7780: update voltage on read
ARM: OMAP2+: hwmod: Fix some section annotations
modpost: validate symbol names also in find_elf_symbol
perf tools: Add Hygon Dhyana support
soc/tegra: Don't leak device tree node reference
f2fs: move dir data flush to write checkpoint process
f2fs: fix wrong return value of f2fs_acl_create
sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN
nfsd4: fix crash on writing v4_end_grace before nfsd startup
arm64: ftrace: don't adjust the LR value
ARM: dts: mmp2: fix TWSI2
x86/fpu: Add might_fault() to user_insn()
media: DaVinci-VPBE: fix error handling in vpbe_initialize()
smack: fix access permissions for keyring
usb: hub: delay hub autosuspend if USB3 port is still link training
timekeeping: Use proper seqcount initializer
ARM: dts: Fix OMAP4430 SDP Ethernet startup
mips: bpf: fix encoding bug for mm_srlv32_op
iommu/arm-smmu-v3: Use explicit mb() when moving cons pointer
sata_rcar: fix deferred probing
clk: imx6sl: ensure MMDC CH0 handshake is bypassed
cpuidle: big.LITTLE: fix refcount leak
i2c-axxia: check for error conditions first
udf: Fix BUG on corrupted inode
ARM: pxa: avoid section mismatch warning
ASoC: fsl: Fix SND_SOC_EUKREA_TLV320 build error on i.MX8M
memstick: Prevent memstick host from getting runtime suspended during card detection
tty: serial: samsung: Properly set flags in autoCTS mode
arm64: KVM: Skip MMIO insn after emulation
powerpc/uaccess: fix warning/error with access_ok()
mac80211: fix radiotap vendor presence bitmap handling
xfrm6_tunnel: Fix spi check in __xfrm6_tunnel_alloc_spi
Bluetooth: Fix unnecessary error message for HCI request completion
cw1200: Fix concurrency use-after-free bugs in cw1200_hw_scan()
drbd: narrow rcu_read_lock in drbd_sync_handshake
drbd: disconnect, if the wrong UUIDs are attached on a connected peer
drbd: skip spurious timeout (ping-timeo) when failing promote
drbd: Avoid Clang warning about pointless switch statment
video: clps711x-fb: release disp device node in probe()
fbdev: fbmem: behave better with small rotated displays and many CPUs
igb: Fix an issue that PME is not enabled during runtime suspend
fbdev: fbcon: Fix unregister crash when more than one framebuffer
KVM: x86: svm: report MSR_IA32_MCG_EXT_CTL as unsupported
NFS: nfs_compare_mount_options always compare auth flavors.
hwmon: (lm80) fix a missing check of the status of SMBus read
hwmon: (lm80) fix a missing check of bus read in lm80 probe
seq_buf: Make seq_buf_puts() null-terminate the buffer
crypto: ux500 - Use proper enum in cryp_set_dma_transfer
crypto: ux500 - Use proper enum in hash_set_dma_transfer
cifs: check ntwrk_buf_start for NULL before dereferencing it
um: Avoid marking pages with "changed protection"
niu: fix missing checks of niu_pci_eeprom_read
scripts/decode_stacktrace: only strip base path when a prefix of the path
ocfs2: don't clear bh uptodate for block read
isdn: hisax: hfc_pci: Fix a possible concurrency use-after-free bug in HFCPCI_l1hw()
gdrom: fix a memory leak bug
block/swim3: Fix -EBUSY error when re-opening device after unmount
HID: lenovo: Add checks to fix of_led_classdev_register
kernel/hung_task.c: break RCU locks based on jiffies
fs/epoll: drop ovflist branch prediction
exec: load_script: don't blindly truncate shebang string
thermal: hwmon: inline helpers when CONFIG_THERMAL_HWMON is not set
test_hexdump: use memcpy instead of strncpy
tipc: use destination length for copy string
string: drop __must_check from strscpy() and restore strscpy() usages in cgroup
dccp: fool proof ccid_hc_[rt]x_parse_options()
enic: fix checksum validation for IPv6
net: dp83640: expire old TX-skb
skge: potential memory corruption in skge_get_regs()
net: systemport: Fix WoL with password after deep sleep
net: dsa: slave: Don't propagate flag changes on down slave interfaces
ALSA: compress: Fix stop handling on compressed capture streams
ALSA: hda - Serialize codec registrations
fuse: call pipe_buf_release() under pipe lock
fuse: decrement NR_WRITEBACK_TEMP on the right page
fuse: handle zero sized retrieve correctly
dmaengine: imx-dma: fix wrong callback invoke
usb: phy: am335x: fix race condition in _probe
usb: gadget: udc: net2272: Fix bitwise and boolean operations
KVM: x86: work around leak of uninitialized stack contents (CVE-2019-7222)
KVM: nVMX: unconditionally cancel preemption timer in free_nested (CVE-2019-7221)
perf/x86/intel/uncore: Add Node ID mask
x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()
perf/core: Don't WARN() for impossible ring-buffer sizes
perf tests evsel-tp-sched: Fix bitwise operator
mtd: rawnand: gpmi: fix MX28 bus master lockup problem
signal: Always notice exiting tasks
signal: Better detection of synchronous signals
misc: vexpress: Off by one in vexpress_syscfg_exec()
debugfs: fix debugfs_rename parameter checking
mips: cm: reprime error cause
MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled
MIPS: VDSO: Include $(ccflags-vdso) in o32,n32 .lds builds
ARM: iop32x/n2100: fix PCI IRQ mapping
mac80211: ensure that mgmt tx skbs have tailroom for encryption
drm/modes: Prevent division by zero htotal
drm/vmwgfx: Fix setting of dma masks
drm/vmwgfx: Return error code from vmw_execbuf_copy_fence_user
HID: debug: fix the ring buffer implementation
NFC: nxp-nci: Include unaligned.h instead of access_ok.h
Revert "cifs: In Kconfig CONFIG_CIFS_POSIX needs depends on legacy (insecure cifs)"
libceph: avoid KEEPALIVE_PENDING races in ceph_con_keepalive()
xfrm: refine validation of template and selector families
batman-adv: Avoid WARN on net_device without parent in netns
batman-adv: Force mac header to start of data on xmit
Revert "exec: load_script: don't blindly truncate shebang string"
uapi/if_ether.h: prevent redefinition of struct ethhdr
ARM: dts: da850-evm: Correct the sound card name
ARM: dts: kirkwood: Fix polarity of GPIO fan lines
gpio: pl061: handle failed allocations
cifs: Limit memory used by lock request calls to a page
Documentation/network: reword kernel version reference
Revert "Input: elan_i2c - add ACPI ID for touchpad in ASUS Aspire F5-573G"
Input: elan_i2c - add ACPI ID for touchpad in Lenovo V330-15ISK
perf/core: Fix impossible ring-buffer sizes warning
ALSA: hda - Add quirk for HP EliteBook 840 G5
ALSA: usb-audio: Fix implicit fb endpoint setup by quirk
Input: bma150 - register input device after setting private data
Input: elantech - enable 3rd button support on Fujitsu CELSIUS H780
alpha: fix page fault handling for r16-r18 targets
alpha: Fix Eiger NR_IRQS to 128
tracing/uprobes: Fix output for multiple string arguments
x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
signal: Restore the stop PTRACE_EVENT_EXIT
x86/a.out: Clear the dump structure initially
dm thin: fix bug where bio that overwrites thin block ignores FUA
smsc95xx: Use skb_cow_head to deal with cloned skbs
ch9200: use skb_cow_head() to deal with cloned skbs
kaweth: use skb_cow_head() to deal with cloned skbs
usb: dwc2: Remove unnecessary kfree
pinctrl: msm: fix gpio-hog related boot issues
uapi/if_ether.h: move __UAPI_DEF_ETHHDR libc define
Linux 4.4.175
Change-Id: I41d95e9717106bcc9342573855fec8f823d9b28c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit da360299b6734135a5f66d7db458dcc7801c826a upstream.
This fixes a compile problem of some user space applications by not
including linux/libc-compat.h in uapi/if_ether.h.
linux/libc-compat.h checks which "features" the header files, included
from the libc, provide to make the Linux kernel uapi header files only
provide no conflicting structures and enums. If a user application mixes
kernel headers and libc headers it could happen that linux/libc-compat.h
gets included too early where not all other libc headers are included
yet. Then the linux/libc-compat.h would not prevent all the
redefinitions and we run into compile problems.
This patch removes the include of linux/libc-compat.h from
uapi/if_ether.h to fix the recently introduced case, but not all as this
is more or less impossible.
It is no problem to do the check directly in the if_ether.h file and not
in libc-compat.h as this does not need any fancy glibc header detection
as glibc never provided struct ethhdr and should define
__UAPI_DEF_ETHHDR by them self when they will provide this.
The following test program did not compile correctly any more:
#include <linux/if_ether.h>
#include <netinet/in.h>
#include <linux/in.h>
int main(void)
{
return 0;
}
Fixes: 6926e041a892 ("uapi/if_ether.h: prevent redefinition of struct ethhdr")
Reported-by: Guillaume Nault <g.nault@alphalink.fr>
Cc: <stable@vger.kernel.org> # 4.15
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6926e041a8920c8ec27e4e155efa760aa01551fd upstream.
Musl provides its own ethhdr struct definition. Add a guard to prevent
its definition of the appropriate musl header has already been included.
glibc does not implement this header, but when glibc will implement this
they can just define __UAPI_DEF_ETHHDR 0 to make it work with the
kernel.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 13054abbaa4f1fd4e6f3b4b63439ec033b4c8035 upstream.
Ring buffer implementation in hid_debug_event() and hid_debug_events_read()
is strange allowing lost or corrupted data. After commit 717adfdaf147
("HID: debug: check length before copy_to_user()") it is possible to enter
an infinite loop in hid_debug_events_read() by providing 0 as count, this
locks up a system. Fix this by rewriting the ring buffer implementation
with kfifo and simplify the code.
This fixes CVE-2019-3819.
v2: fix an execution logic and add a comment
v3: use __set_current_state() instead of set_current_state()
Backport to v4.4: some (tree-wide) patches are missing in v4.4 so
cherry-pick relevant pieces from:
* 6396bb22151 ("treewide: kzalloc() -> kcalloc()")
* a9a08845e9ac ("vfs: do bulk POLL* -> EPOLL* replacement")
* 92529623d242 ("HID: debug: improve hid_debug_event()")
* 174cd4b1e5fb ("sched/headers: Prepare to move signal wakeup & sigpending
methods from <linux/sched.h> into <linux/sched/signal.h>")
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1669187
Cc: stable@vger.kernel.org # v4.18+
Fixes: cd667ce24796 ("HID: use debugfs for events/reports dumping")
Fixes: 717adfdaf147 ("HID: debug: check length before copy_to_user()")
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4f2ab5e1d13d6aa77c55f4914659784efd776eb4 upstream.
It is normal user behaviour to start, stop, then start a stream
again without closing it. Currently this works for compressed
playback streams but not capture ones.
The states on a compressed capture stream go directly from OPEN to
PREPARED, unlike a playback stream which moves to SETUP and waits
for a write of data before moving to PREPARED. Currently however,
when a stop is sent the state is set to SETUP for both types of
streams. This leaves a capture stream in the situation where a new
start can't be sent as that requires the state to be PREPARED and
a new set_params can't be sent as that requires the state to be
OPEN. The only option being to close the stream, and then reopen.
Correct this issues by allowing snd_compr_drain_notify to set the
state depending on the stream direction, as we already do in
set_params.
Fixes: 49bb6402f1aa ("ALSA: compress_core: Add support for capture streams")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 08a77676f9c5fc69a681ccd2cd8140e65dcb26c7 upstream.
e7fd37ba1217 ("cgroup: avoid copying strings longer than the buffers")
converted possibly unsafe strncpy() usages in cgroup to strscpy().
However, although the callsites are completely fine with truncated
copied, because strscpy() is marked __must_check, it led to the
following warnings.
kernel/cgroup/cgroup.c: In function ‘cgroup_file_name’:
kernel/cgroup/cgroup.c:1400:10: warning: ignoring return value of ‘strscpy’, declared with attribute warn_unused_result [-Wunused-result]
strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX);
^
To avoid the warnings, 50034ed49645 ("cgroup: use strlcpy() instead of
strscpy() to avoid spurious warning") switched them to strlcpy().
strlcpy() is worse than strlcpy() because it unconditionally runs
strlen() on the source string, and the only reason we switched to
strlcpy() here was because it was lacking __must_check, which doesn't
reflect any material differences between the two function. It's just
that someone added __must_check to strscpy() and not to strlcpy().
These basic string copy operations are used in variety of ways, and
one of not-so-uncommon use cases is safely handling truncated copies,
where the caller naturally doesn't care about the return value. The
__must_check doesn't match the actual use cases and forces users to
opt for inferior variants which lack __must_check by happenstance or
spread ugly (void) casts.
Remove __must_check from strscpy() and restore strscpy() usages in
cgroup.
Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ma Shimiao <mashimiao.fnst@cn.fujitsu.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
[backport only the string.h portion to remove build warnings starting to show up - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit a52c5a16cf19d8a85831bb1b915a221dd4ffae3c ]
There are several warnings from Clang about no case statement matching
the constant 0:
In file included from drivers/block/drbd/drbd_receiver.c:48:
In file included from drivers/block/drbd/drbd_int.h:48:
In file included from ./include/linux/drbd_genl_api.h:54:
In file included from ./include/linux/genl_magic_struct.h:236:
./include/linux/drbd_genl.h:321:1: warning: no case matching constant
switch condition '0'
GENL_struct(DRBD_NLA_HELPER, 24, drbd_helper_info,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./include/linux/genl_magic_struct.h:220:10: note: expanded from macro
'GENL_struct'
switch (0) {
^
Silence this warning by adding a 'case 0:' statement. Additionally,
adjust the alignment of the statements in the ct_assert_unique macro to
avoid a checkpatch warning.
This solution was originally sent by Arnd Bergmann with a default case
statement: https://lore.kernel.org/patchwork/patch/756723/
Link: https://github.com/ClangBuiltLinux/linux/issues/43
Suggested-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 40cbfa90218b ("cfg80211/nl80211: Optional authentication
offload to userspace")' introduced authentication offload to user
space by the host drivers in station mode. This commit extends
the same for the AP mode too.
Extend NL80211_ATTR_EXTERNAL_AUTH_SUPPORT to also claim the
support of external authentication from the user space in AP mode.
A new flag parameter is introduced in cfg80211_ap_settings to
intend the same while "start ap".
Host driver to use NL80211_CMD_FRAME interface to transmit and
receive the authentication frames to / from the user space.
Host driver to indicate the flag NL80211_RXMGMT_FLAG_EXTERNAL_AUTH
while sending the authentication frame to the user space. This
intends to the user space that the driver wishes it to process
the authentication frame for certain protocols, though it had
initially advertised the support for SME functionality.
User space shall accordingly do the authentication and indicate
its final status through the command NL80211_CMD_EXTERNAL_AUTH.
Allow the command even if userspace doesn't include the attribute
NL80211_ATTR_SSID for AP interface.
Host driver shall continue with the association sequence and
indicate the STA connection status through cfg80211_new_sta.
To facilitate the host drivers in AP mode for matching the pmkid
by the stations during the association, NL80211_CMD_EXTERNAL_AUTH
is also enhanced to include the pmkid to drivers after
the authentication.
This pmkid can also be used in the STA mode to include in the
association request.
Also modify nl80211_external_auth to not mandate SSID in AP mode.
[remove useless nla_get_flag() usage]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: fe4943702c850fa07f963eaa6f1530d9d4c2da78
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
Change-Id: I6341814aa334e25f803953fcb855a439644eb1a9
CRs-Fixed: 2396191
Signed-off-by: Srinivas Dasari <dasaris@codeaurora.org>
Signed-off-by: Liangwei Dong <liangwei@codeaurora.org>
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Q6 core service provides API to query ADSP version.
Update the apr with get()/set() to use this adsp version
by platform/machine drivers.
Signed-off-by: Surendar karka <sukark@codeaurora.org>
Change-Id: I2466f4eba636ce41e5eb9a75e2e5e75a069fd0ee
Signed-off-by: Dhanalakshmi Siddani <dsiddani@codeaurora.org>
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Use the property POWER_SUPPLY_PROP_MAX_PULSE_ALLOWED to
specify the maximum pulses which can be supported for
HVDCP3. This is used to limit the VBUS to a max value.
CRs-Fixed: 1047232
Change-Id: I85677ba574ff3da2a38e06a2f25a43e80ae150d6
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
Signed-off-by: Vamshi Krishna B V <vbv@codeaurora.org>
Signed-off-by: Shilpa Suresh <sbsure@codeaurora.org>
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Currently, HVDCP3 detection is enabled by default. Add support
to control it dynamically through a power supply property
"allow_hvdcp3".
CRs-Fixed: 991060
Change-Id: Id283b572cdb51094ad53d590e230104dc3e1beb7
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
Signed-off-by: Shilpa Suresh <sbsure@codeaurora.org>
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Introduce a function pointer to avoid the compilation error
due the same function name used in the legacy and v2 flash
drivers. These two drivers need to be enabled in a single
defconfig that supports multiple hardware platforms to achieve
the binary compatibility.
Change-Id: I1ded3d4d9013c6f7f56e0a8952f4b45d20b07326
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Shilpa Suresh <sbsure@codeaurora.org>
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* refs/heads/tmp-62872f9
Linux 4.4.174
rcu: Force boolean subscript for expedited stall warnings
net: ipv4: do not handle duplicate fragments as overlapping
net: fix pskb_trim_rcsum_slow() with odd trim offset
inet: frags: better deal with smp races
ipv4: frags: precedence bug in ip_expire()
ip: frags: fix crash in ip_do_fragment()
ip: process in-order fragments efficiently
ip: add helpers to process in-order fragments faster.
ip: use rb trees for IP frag queue.
net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends
ipv6: defrag: drop non-last frags smaller than min mtu
net: modify skb_rbtree_purge to return the truesize of all purged skbs.
ip: discard IPv4 datagrams with overlapping segments.
inet: frags: fix ip6frag_low_thresh boundary
inet: frags: get rid of ipfrag_skb_cb/FRAG_CB
inet: frags: reorganize struct netns_frags
rhashtable: reorganize struct rhashtable layout
ipv6: frags: rewrite ip6_expire_frag_queue()
inet: frags: do not clone skb in ip_expire()
inet: frags: break the 2GB limit for frags storage
inet: frags: remove inet_frag_maybe_warn_overflow()
inet: frags: get rif of inet_frag_evicting()
inet: frags: remove some helpers
ipfrag: really prevent allocation on netns exit
net: ieee802154: 6lowpan: fix frag reassembly
inet: frags: use rhashtables for reassembly units
rhashtable: add schedule points
rhashtable: Add rhashtable_lookup()
rhashtable: add rhashtable_lookup_get_insert_key()
inet: frags: refactor lowpan_net_frag_init()
inet: frags: refactor ipv6_frag_init()
inet: frags: refactor ipfrag_init()
inet: frags: add a pointer to struct netns_frags
inet: frags: change inet_frags_init_net() return value
Change-Id: I1f6e2fd6f7960509fa52b726458c74c9fb070b5b
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.174
inet: frags: change inet_frags_init_net() return value
inet: frags: add a pointer to struct netns_frags
inet: frags: refactor ipfrag_init()
inet: frags: refactor ipv6_frag_init()
inet: frags: refactor lowpan_net_frag_init()
rhashtable: add rhashtable_lookup_get_insert_key()
rhashtable: Add rhashtable_lookup()
rhashtable: add schedule points
inet: frags: use rhashtables for reassembly units
net: ieee802154: 6lowpan: fix frag reassembly
ipfrag: really prevent allocation on netns exit
inet: frags: remove some helpers
inet: frags: get rif of inet_frag_evicting()
inet: frags: remove inet_frag_maybe_warn_overflow()
inet: frags: break the 2GB limit for frags storage
inet: frags: do not clone skb in ip_expire()
ipv6: frags: rewrite ip6_expire_frag_queue()
rhashtable: reorganize struct rhashtable layout
inet: frags: reorganize struct netns_frags
inet: frags: get rid of ipfrag_skb_cb/FRAG_CB
inet: frags: fix ip6frag_low_thresh boundary
ip: discard IPv4 datagrams with overlapping segments.
net: modify skb_rbtree_purge to return the truesize of all purged skbs.
ipv6: defrag: drop non-last frags smaller than min mtu
net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends
ip: use rb trees for IP frag queue.
ip: add helpers to process in-order fragments faster.
ip: process in-order fragments efficiently
ip: frags: fix crash in ip_do_fragment()
ipv4: frags: precedence bug in ip_expire()
inet: frags: better deal with smp races
net: fix pskb_trim_rcsum_slow() with odd trim offset
net: ipv4: do not handle duplicate fragments as overlapping
rcu: Force boolean subscript for expedited stall warnings
Linux 4.4.174
Change-Id: I47eace4f47ffe0bf16b29615d09ed903c40a272b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 353c9cb360874e737fb000545f783df756c06f9a upstream.
This patch introduces several helper functions/macros that will be
used in the follow-up patch. No runtime changes yet.
The new logic (fully implemented in the second patch) is as follows:
* Nodes in the rb-tree will now contain not single fragments, but lists
of consecutive fragments ("runs").
* At each point in time, the current "active" run at the tail is
maintained/tracked. Fragments that arrive in-order, adjacent
to the previous tail fragment, are added to this tail run without
triggering the re-balancing of the rb-tree.
* If a fragment arrives out of order with the offset _before_ the tail run,
it is inserted into the rb-tree as a single fragment.
* If a fragment arrives after the current tail fragment (with a gap),
it starts a new "tail" run, as is inserted into the rb-tree
at the end as the head of the new run.
skb->cb is used to store additional information
needed here (suggested by Eric Dumazet).
Reported-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Peter Oskolkov <posk@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit fa0f527358bd900ef92f925878ed6bfbd51305cc upstream.
Similar to TCP OOO RX queue, it makes sense to use rb trees to store
IP fragments, so that OOO fragments are inserted faster.
Tested:
- a follow-up patch contains a rather comprehensive ip defrag
self-test (functional)
- ran neper `udp_stream -c -H <host> -F 100 -l 300 -T 20`:
netstat --statistics
Ip:
282078937 total packets received
0 forwarded
0 incoming packets discarded
946760 incoming packets delivered
18743456 requests sent out
101 fragments dropped after timeout
282077129 reassemblies required
944952 packets reassembled ok
262734239 packet reassembles failed
(The numbers/stats above are somewhat better re:
reassemblies vs a kernel without this patchset. More
comprehensive performance testing TBD).
Reported-by: Jann Horn <jannh@google.com>
Reported-by: Juha-Matti Tilli <juha-matti.tilli@iki.fi>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
[bwh: Backported to 4.4:
- Keep using frag_kfree_skb() in inet_frag_destroy()
- Adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 88078d98d1bb085d72af8437707279e203524fa5 upstream.
After working on IP defragmentation lately, I found that some large
packets defeat CHECKSUM_COMPLETE optimization because of NIC adding
zero paddings on the last (small) fragment.
While removing the padding with pskb_trim_rcsum(), we set skb->ip_summed
to CHECKSUM_NONE, forcing a full csum validation, even if all prior
fragments had CHECKSUM_COMPLETE set.
We can instead compute the checksum of the part we are trimming,
usually smaller than the part we keep.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 385114dec8a49b5e5945e77ba7de6356106713f4 upstream.
Tested: see the next patch is the series.
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7969e5c40dfd04799d4341f1b7cd266b6e47f227 upstream.
This behavior is required in IPv6, and there is little need
to tolerate overlapping fragments in IPv4. This change
simplifies the code and eliminates potential DDoS attack vectors.
Tested: ran ip_defrag selftest (not yet available uptream).
Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
[bwh: Backported to 4.4:
- s/__IP_INC_STATS/IP_INC_STATS_BH/
- Deleted code is slightly different]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit bf66337140c64c27fa37222b7abca7e49d63fb57 upstream.
ip_defrag uses skb->cb[] to store the fragment offset, and unfortunately
this integer is currently in a different cache line than skb->next,
meaning that we use two cache lines per skb when finding the insertion point.
By aliasing skb->ip_defrag_offset and skb->dev, we pack all the fields
in a single cache line and save precious memory bandwidth.
Note that after the fast path added by Changli Gao in commit
d6bebca92c66 ("fragment: add fast path for in-order fragments")
this change wont help the fast path, since we still need
to access prev->len (2nd cache line), but will show great
benefits when slow path is entered, since we perform
a linear scan of a potentially long list.
Also, note that this potential long list is an attack vector,
we might consider also using an rb-tree there eventually.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c2615cf5a761b32bf74e85bddc223dfff3d9b9f0 upstream.
Put the read-mostly fields in a separate cache line
at the beginning of struct netns_frags, to reduce
false sharing noticed in inet_frag_kill()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e5d672a0780d9e7118caad4c171ec88b8299398d upstream.
While under frags DDOS I noticed unfortunate false sharing between
@nelems and @params.automatic_shrinking
Move @nelems at the end of struct rhashtable so that first cache line
is shared between all cpus, because almost never dirtied.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3e67f106f619dcfaf6f4e2039599bdb69848c714 upstream.
Some users are willing to provision huge amounts of memory to be able
to perform reassembly reasonnably well under pressure.
Current memory tracking is using one atomic_t and integers.
Switch to atomic_long_t so that 64bit arches can use more than 2GB,
without any cost for 32bit arches.
Note that this patch avoids an overflow error, if high_thresh was set
to ~2GB, since this test in inet_frag_alloc() was never true :
if (... || frag_mem_limit(nf) > nf->high_thresh)
Tested:
$ echo 16000000000 >/proc/sys/net/ipv4/ipfrag_high_thresh
<frag DDOS>
$ grep FRAG /proc/net/sockstat
FRAG: inuse 14705885 memory 16000002880
$ nstat -n ; sleep 1 ; nstat | grep Reas
IpReasmReqds 3317150 0.0
IpReasmFails 3317112 0.0
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 2d44ed22e607f9a285b049de2263e3840673a260 upstream.
This function is obsolete, after rhashtable addition to inet defrag.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 399d1404be660d355192ff4df5ccc3f4159ec1e4 upstream.
This refactors ip_expire() since one indentation level is removed.
Note: in the future, we should try hard to avoid the skb_clone()
since this is a serious performance cost.
Under DDOS, the ICMP message wont be sent because of rate limits.
Fact that ip6_expire_frag_queue() does not use skb_clone() is
disturbing too. Presumably IPv6 should have the same
issue than the one we fixed in commit ec4fbd64751d
("inet: frag: release spinlock before calling icmp_send()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6befe4a78b1553edb6eed3a78b4bcd9748526672 upstream.
Remove sum_frag_mem_limit(), ip_frag_mem() & ip6_frag_mem()
Also since we use rhashtable we can bring back the number of fragments
in "grep FRAG /proc/net/sockstat /proc/net/sockstat6" that was
removed in commit 434d305405ab ("inet: frag: don't account number
of fragment queues")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 648700f76b03b7e8149d13cc2bdb3355035258a9 upstream.
Some applications still rely on IP fragmentation, and to be fair linux
reassembly unit is not working under any serious load.
It uses static hash tables of 1024 buckets, and up to 128 items per bucket (!!!)
A work queue is supposed to garbage collect items when host is under memory
pressure, and doing a hash rebuild, changing seed used in hash computations.
This work queue blocks softirqs for up to 25 ms when doing a hash rebuild,
occurring every 5 seconds if host is under fire.
Then there is the problem of sharing this hash table for all netns.
It is time to switch to rhashtables, and allocate one of them per netns
to speedup netns dismantle, since this is a critical metric these days.
Lookup is now using RCU. A followup patch will even remove
the refcount hold/release left from prior implementation and save
a couple of atomic operations.
Before this patch, 16 cpus (16 RX queue NIC) could not handle more
than 1 Mpps frags DDOS.
After the patch, I reach 9 Mpps without any tuning, and can use up to 2GB
of storage for the fragments (exact number depends on frags being evicted
after timeout)
$ grep FRAG /proc/net/sockstat
FRAG: inuse 1966916 memory 2140004608
A followup patch will change the limits for 64bit arches.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Florian Westphal <fw@strlen.de>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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