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[ Upstream commit 8366685b2883e523f91e9816d7be371eb1144749 ]
When we clone state only add_time was cloned. It missed values like
bytes, packets. Now clone the all members of the structure.
v1->v3:
- use memcpy to copy the entire structure
Fixes: 80c9abaabf42 ("[XFRM]: Extension for dynamic update of endpoint address(es)")
Signed-off-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 91a46c6d1b4fcbfa4773df9421b8ad3e58088101 ]
XFRMA_REPLAY_ESN_VAL was not cloned completely from the old to the new.
Migrate this attribute during XFRMA_MSG_MIGRATE
v1->v2:
- move curleft cloning to a separate patch
Fixes: af2f464e326e ("xfrm: Assign esn pointers when cloning a state")
Signed-off-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit d44154f969a44269a9288c274c1c2fd9e85df8a5 ]
Provide a nand_cleanup() function to free all nand related resources
without unregistering the mtd device.
This should allow drivers to call mtd_device_unregister() and handle
its return value and still being able to cleanup all nand related
resources.
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Daniel Walter <dwalter@sigma-star.at>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 9a9e77495958c7382b2438bc19746dd3aaaabb8e upstream.
The variable "i" isn't initialized back correctly after the first loop
under the label inst_rollback gets executed.
The value of "i" is assigned to be option_count - 1, and the ensuing
loop (under alloc_rollback) begins by initializing i--.
Thus, the value of i when the loop begins execution will now become
i = option_count - 2.
Thus, when kfree(dst_opts[i]) is called in the second loop in this
order, (i.e., inst_rollback followed by alloc_rollback),
dst_optsp[option_count - 2] is the first element freed, and
dst_opts[option_count - 1] does not get freed, and thus, a memory
leak is caused.
This memory leak can be fixed, by assigning i = option_count (instead of
option_count - 1).
Fixes: 80f7c6683fe0 ("team: add support for per-port options")
Reported-by: syzbot+69b804437cfec30deac3@syzkaller.appspotmail.com
Tested-by: syzbot+69b804437cfec30deac3@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 89d01748b2354e210b5d4ea47bc25a42a1b42c82 upstream.
Some devices set needed_headroom. If we ignore it, we might
end up crashing in various skb_push() for example in ipgre_header()
since some layers assume enough headroom has been reserved.
Fixes: 1d76efe1577b ("team: add support for non-ethernet devices")
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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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
commit d42ee76ecb6c49d499fc5eb32ca34468d95dbc3e upstream.
After freeing ep->auth_hmacs we have to clear the pointer
or risk use-after-free as reported by syzbot:
BUG: KASAN: use-after-free in sctp_auth_destroy_hmacs net/sctp/auth.c:509 [inline]
BUG: KASAN: use-after-free in sctp_auth_destroy_hmacs net/sctp/auth.c:501 [inline]
BUG: KASAN: use-after-free in sctp_auth_free+0x17e/0x1d0 net/sctp/auth.c:1070
Read of size 8 at addr ffff8880a8ff52c0 by task syz-executor941/6874
CPU: 0 PID: 6874 Comm: syz-executor941 Not tainted 5.9.0-rc8-syzkaller #0
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+0x198/0x1fd lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:383
__kasan_report mm/kasan/report.c:513 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
sctp_auth_destroy_hmacs net/sctp/auth.c:509 [inline]
sctp_auth_destroy_hmacs net/sctp/auth.c:501 [inline]
sctp_auth_free+0x17e/0x1d0 net/sctp/auth.c:1070
sctp_endpoint_destroy+0x95/0x240 net/sctp/endpointola.c:203
sctp_endpoint_put net/sctp/endpointola.c:236 [inline]
sctp_endpoint_free+0xd6/0x110 net/sctp/endpointola.c:183
sctp_destroy_sock+0x9c/0x3c0 net/sctp/socket.c:4981
sctp_v6_destroy_sock+0x11/0x20 net/sctp/socket.c:9415
sk_common_release+0x64/0x390 net/core/sock.c:3254
sctp_close+0x4ce/0x8b0 net/sctp/socket.c:1533
inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:475
__sock_release+0xcd/0x280 net/socket.c:596
sock_close+0x18/0x20 net/socket.c:1277
__fput+0x285/0x920 fs/file_table.c:281
task_work_run+0xdd/0x190 kernel/task_work.c:141
exit_task_work include/linux/task_work.h:25 [inline]
do_exit+0xb7d/0x29f0 kernel/exit.c:806
do_group_exit+0x125/0x310 kernel/exit.c:903
__do_sys_exit_group kernel/exit.c:914 [inline]
__se_sys_exit_group kernel/exit.c:912 [inline]
__x64_sys_exit_group+0x3a/0x50 kernel/exit.c:912
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x43f278
Code: Bad RIP value.
RSP: 002b:00007fffe0995c38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f278
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bf068 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000
Allocated by task 6874:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461
kmem_cache_alloc_trace+0x174/0x300 mm/slab.c:3554
kmalloc include/linux/slab.h:554 [inline]
kmalloc_array include/linux/slab.h:593 [inline]
kcalloc include/linux/slab.h:605 [inline]
sctp_auth_init_hmacs+0xdb/0x3b0 net/sctp/auth.c:464
sctp_auth_init+0x8a/0x4a0 net/sctp/auth.c:1049
sctp_setsockopt_auth_supported net/sctp/socket.c:4354 [inline]
sctp_setsockopt+0x477e/0x97f0 net/sctp/socket.c:4631
__sys_setsockopt+0x2db/0x610 net/socket.c:2132
__do_sys_setsockopt net/socket.c:2143 [inline]
__se_sys_setsockopt net/socket.c:2140 [inline]
__x64_sys_setsockopt+0xba/0x150 net/socket.c:2140
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 6874:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355
__kasan_slab_free+0xd8/0x120 mm/kasan/common.c:422
__cache_free mm/slab.c:3422 [inline]
kfree+0x10e/0x2b0 mm/slab.c:3760
sctp_auth_destroy_hmacs net/sctp/auth.c:511 [inline]
sctp_auth_destroy_hmacs net/sctp/auth.c:501 [inline]
sctp_auth_init_hmacs net/sctp/auth.c:496 [inline]
sctp_auth_init_hmacs+0x2b7/0x3b0 net/sctp/auth.c:454
sctp_auth_init+0x8a/0x4a0 net/sctp/auth.c:1049
sctp_setsockopt_auth_supported net/sctp/socket.c:4354 [inline]
sctp_setsockopt+0x477e/0x97f0 net/sctp/socket.c:4631
__sys_setsockopt+0x2db/0x610 net/socket.c:2132
__do_sys_setsockopt net/socket.c:2143 [inline]
__se_sys_setsockopt net/socket.c:2140 [inline]
__x64_sys_setsockopt+0xba/0x150 net/socket.c:2140
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes: 1f485649f529 ("[SCTP]: Implement SCTP-AUTH internals")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 29b4f5f188571c112713c35cc87eefb46efee612 upstream.
Since glibc 2.28 when running 'perf top --stdio', input handling no
longer works, but hitting any key always just prints the "Mapped keys"
help text.
To fix it, call clearerr() in the display_thread() loop to clear any EOF
sticky errors, as instructed in the glibc NEWS file
(https://sourceware.org/git/?p=glibc.git;a=blob;f=NEWS):
* All stdio functions now treat end-of-file as a sticky condition. If you
read from a file until EOF, and then the file is enlarged by another
process, you must call clearerr or another function with the same effect
(e.g. fseek, rewind) before you can read the additional data. This
corrects a longstanding C99 conformance bug. It is most likely to affect
programs that use stdio to read interactive input from a terminal.
(Bug #1190.)
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200305083714.9381-2-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b292b50b0efcc7095d8bf15505fba6909bb35dce upstream.
syzbot is reporting hung task in wait_for_device_probe() [1]. At least,
we always need to decrement probe_count if we incremented probe_count in
really_probe().
However, since I can't find "Resources present before probing" message in
the console log, both "this message simply flowed off" and "syzbot is not
hitting this path" will be possible. Therefore, while we are at it, let's
also prepare for concurrent wait_for_device_probe() calls by replacing
wake_up() with wake_up_all().
[1] https://syzkaller.appspot.com/bug?id=25c833f1983c9c1d512f4ff860dd0d7f5a2e2c0f
Reported-by: syzbot <syzbot+805f5f6ae37411f15b64@syzkaller.appspotmail.com>
Fixes: 7c35e699c88bd607 ("driver core: Print device when resources present in really_probe()")
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20200713021254.3444-1-penguin-kernel@I-love.SAKURA.ne.jp
[iwamatsu: Drop patch for deferred_probe_timeout_work_func()]
Signed-off-by: Nobuhiro Iwamatsu (CIP) <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 720ef73d1a239e33c3ad8fac356b9b1348e68aaf upstream.
Evaluating ACPI _BCL could fail, then ACPI buffer size will be set to 0.
When reuse this ACPI buffer, AE_BUFFER_OVERFLOW will be triggered.
Re-initialize buffer size will make ACPI evaluate successfully.
Fixes: 46445b6b896fd ("thinkpad-acpi: fix handle locate for video and query of _BCL")
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5f38b06db8af3ed6c2fc1b427504ca56fae2eacc upstream.
clang static analysis flags this represenative problem
thinkpad_acpi.c:2523:7: warning: Branch condition evaluates
to a garbage value
if (!oldn->mute ||
^~~~~~~~~~~
In hotkey_kthread() mute is conditionally set by hotkey_read_nvram()
but unconditionally checked by hotkey_compare_and_issue_event().
So the tp_nvram_state variable s[2] needs to be initialized.
Fixes: 01e88f25985d ("ACPI: thinkpad-acpi: add CMOS NVRAM polling for hot keys (v9)")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: mark gross <mgross@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4013c1496c49615d90d36b9d513eee8e369778e9 upstream.
Kernel threads intentionally do CLONE_FS in order to follow any changes
that 'init' does to set up the root directory (or cwd).
It is admittedly a bit odd, but it avoids the situation where 'init'
does some extensive setup to initialize the system environment, and then
we execute a usermode helper program, and it uses the original FS setup
from boot time that may be very limited and incomplete.
[ Both Al Viro and Eric Biederman point out that 'pivot_root()' will
follow the root regardless, since it fixes up other users of root (see
chroot_fs_refs() for details), but overmounting root and doing a
chroot() would not. ]
However, Vegard Nossum noticed that the CLONE_FS not only means that we
follow the root and current working directories, it also means we share
umask with whatever init changed it to. That wasn't intentional.
Just reset umask to the original default (0022) before actually starting
the usermode helper program.
Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3dc289f8f139997f4e9d3cfccf8738f20d23e47b upstream.
In nl80211_parse_key(), key.idx is first initialized as -1.
If this value of key.idx remains unmodified and gets returned, and
nl80211_key_allowed() also returns 0, then rdev_del_key() gets called
with key.idx = -1.
This causes an out-of-bounds array access.
Handle this issue by checking if the value of key.idx after
nl80211_parse_key() is called and return -EINVAL if key.idx < 0.
Cc: stable@vger.kernel.org
Reported-by: syzbot+b1bb342d1d097516cbda@syzkaller.appspotmail.com
Tested-by: syzbot+b1bb342d1d097516cbda@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Link: https://lore.kernel.org/r/20201007035401.9522-1-anant.thazhemadam@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5af08640795b2b9a940c9266c0260455377ae262 upstream.
fbcon_get_font() is reading out-of-bounds. A malicious user may resize
`vc->vc_font.height` to a large value, causing fbcon_get_font() to
read out of `fontdata`.
fbcon_get_font() handles both built-in and user-provided fonts.
Fortunately, recently we have added FONT_EXTRA_WORDS support for built-in
fonts, so fix it by adding range checks using FNTSIZE().
This patch depends on patch "fbdev, newport_con: Move FONT_EXTRA_WORDS
macros into linux/font.h", and patch "Fonts: Support FONT_EXTRA_WORDS
macros for built-in fonts".
Cc: stable@vger.kernel.org
Reported-and-tested-by: syzbot+29d4ed7f3bdedf2aa2fd@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=08b8be45afea11888776f897895aef9ad1c3ecfd
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/b34544687a1a09d6de630659eb7a773f4953238b.1600953813.git.yepeilin.cs@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 77972b55fb9d35d4a6b0abca99abffaa4ec6a85b upstream.
This reverts commit 1838d6c62f57836639bd3d83e7855e0ee4f6defc.
This commit moved the ravb_mdio_init() call (and thus the
of_mdiobus_register() call) from the ravb_probe() to the ravb_open()
call. This causes a regression during system resume (s2idle/s2ram), as
new PHY devices cannot be bound while suspended.
During boot, the Micrel PHY is detected like this:
Micrel KSZ9031 Gigabit PHY e6800000.ethernet-ffffffff:00: attached PHY driver [Micrel KSZ9031 Gigabit PHY] (mii_bus:phy_addr=e6800000.ethernet-ffffffff:00, irq=228)
ravb e6800000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
During system suspend, (A) defer_all_probes is set to true, and (B)
usermodehelper_disabled is set to UMH_DISABLED, to avoid drivers being
probed while suspended.
A. If CONFIG_MODULES=n, phy_device_register() calling device_add()
merely adds the device, but does not probe it yet, as
really_probe() returns early due to defer_all_probes being set:
dpm_resume+0x128/0x4f8
device_resume+0xcc/0x1b0
dpm_run_callback+0x74/0x340
ravb_resume+0x190/0x1b8
ravb_open+0x84/0x770
of_mdiobus_register+0x1e0/0x468
of_mdiobus_register_phy+0x1b8/0x250
of_mdiobus_phy_device_register+0x178/0x1e8
phy_device_register+0x114/0x1b8
device_add+0x3d4/0x798
bus_probe_device+0x98/0xa0
device_initial_probe+0x10/0x18
__device_attach+0xe4/0x140
bus_for_each_drv+0x64/0xc8
__device_attach_driver+0xb8/0xe0
driver_probe_device.part.11+0xc4/0xd8
really_probe+0x32c/0x3b8
Later, phy_attach_direct() notices no PHY driver has been bound,
and falls back to the Generic PHY, leading to degraded operation:
Generic PHY e6800000.ethernet-ffffffff:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=e6800000.ethernet-ffffffff:00, irq=POLL)
ravb e6800000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off
B. If CONFIG_MODULES=y, request_module() returns early with -EBUSY due
to UMH_DISABLED, and MDIO initialization fails completely:
mdio_bus e6800000.ethernet-ffffffff:00: error -16 loading PHY driver module for ID 0x00221622
ravb e6800000.ethernet eth0: failed to initialize MDIO
PM: dpm_run_callback(): ravb_resume+0x0/0x1b8 returns -16
PM: Device e6800000.ethernet failed to resume: error -16
Ignoring -EBUSY in phy_request_driver_module(), like was done for
-ENOENT in commit 21e194425abd65b5 ("net: phy: fix issue with loading
PHY driver w/o initramfs"), would makes it fall back to the Generic
PHY, like in the CONFIG_MODULES=n case.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable@vger.kernel.org
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6735b4632def0640dbdf4eb9f99816aca18c4f16 upstream.
syzbot has reported an issue in the framebuffer layer, where a malicious
user may overflow our built-in font data buffers.
In order to perform a reliable range check, subsystems need to know
`FONTDATAMAX` for each built-in font. Unfortunately, our font descriptor,
`struct console_font` does not contain `FONTDATAMAX`, and is part of the
UAPI, making it infeasible to modify it.
For user-provided fonts, the framebuffer layer resolves this issue by
reserving four extra words at the beginning of data buffers. Later,
whenever a function needs to access them, it simply uses the following
macros:
Recently we have gathered all the above macros to <linux/font.h>. Let us
do the same thing for built-in fonts, prepend four extra words (including
`FONTDATAMAX`) to their data buffers, so that subsystems can use these
macros for all fonts, no matter built-in or user-provided.
This patch depends on patch "fbdev, newport_con: Move FONT_EXTRA_WORDS
macros into linux/font.h".
Cc: stable@vger.kernel.org
Link: https://syzkaller.appspot.com/bug?id=08b8be45afea11888776f897895aef9ad1c3ecfd
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/ef18af00c35fb3cc826048a5f70924ed6ddce95b.1600953813.git.yepeilin.cs@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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commit bb0890b4cd7f8203e3aa99c6d0f062d6acdaad27 upstream.
drivers/video/console/newport_con.c is borrowing FONT_EXTRA_WORDS macros
from drivers/video/fbdev/core/fbcon.h. To keep things simple, move all
definitions into <linux/font.h>.
Since newport_con now uses four extra words, initialize the fourth word in
newport_set_font() properly.
Cc: stable@vger.kernel.org
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/7fb8bc9b0abc676ada6b7ac0e0bd443499357267.1600953813.git.yepeilin.cs@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 1cc5ef91d2ff94d2bf2de3b3585423e8a1051cb6 upstream.
The indexes to the nf_nat_l[34]protos arrays come from userspace. So
check the tuple's family, e.g. l3num, when creating the conntrack in
order to prevent an OOB memory access during setup. Here is an example
kernel panic on 4.14.180 when userspace passes in an index greater than
NFPROTO_NUMPROTO.
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
Modules linked in:...
Process poc (pid: 5614, stack limit = 0x00000000a3933121)
CPU: 4 PID: 5614 Comm: poc Tainted: G S W O 4.14.180-g051355490483
Hardware name: Qualcomm Technologies, Inc. SM8150 V2 PM8150 Google Inc. MSM
task: 000000002a3dfffe task.stack: 00000000a3933121
pc : __cfi_check_fail+0x1c/0x24
lr : __cfi_check_fail+0x1c/0x24
...
Call trace:
__cfi_check_fail+0x1c/0x24
name_to_dev_t+0x0/0x468
nfnetlink_parse_nat_setup+0x234/0x258
ctnetlink_parse_nat_setup+0x4c/0x228
ctnetlink_new_conntrack+0x590/0xc40
nfnetlink_rcv_msg+0x31c/0x4d4
netlink_rcv_skb+0x100/0x184
nfnetlink_rcv+0xf4/0x180
netlink_unicast+0x360/0x770
netlink_sendmsg+0x5a0/0x6a4
___sys_sendmsg+0x314/0x46c
SyS_sendmsg+0xb4/0x108
el0_svc_naked+0x34/0x38
This crash is not happening since 5.4+, however, ctnetlink still
allows for creating entries with unsupported layer 3 protocol number.
Fixes: c1d10adb4a521 ("[NETFILTER]: Add ctnetlink port for nf_conntrack")
Signed-off-by: Will McVicker <willmcvicker@google.com>
[pablo@netfilter.org: rebased original patch on top of nf.git]
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3701cb59d892b88d569427586f01491552f377b1 upstream.
or get freed, for that matter, if it's a long (separately stored)
name.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit fe0a916c1eae8e17e86c3753d13919177d63ed7e upstream.
Checking for the lack of epitems refering to the epoll we want to insert into
is not enough; we might have an insertion of that epoll into another one that
has already collected the set of files to recheck for excessive reverse paths,
but hasn't gotten to creating/inserting the epitem for it.
However, any such insertion in progress can be detected - it will update the
generation count in our epoll when it's done looking through it for files
to check. That gets done under ->mtx of our epoll and that allows us to
detect that safely.
We are *not* holding epmutex here, so the generation count is not stable.
However, since both the update of ep->gen by loop check and (later)
insertion into ->f_ep_link are done with ep->mtx held, we are fine -
the sequence is
grab epmutex
bump loop_check_gen
...
grab tep->mtx // 1
tep->gen = loop_check_gen
...
drop tep->mtx // 2
...
grab tep->mtx // 3
...
insert into ->f_ep_link
...
drop tep->mtx // 4
bump loop_check_gen
drop epmutex
and if the fastpath check in another thread happens for that
eventpoll, it can come
* before (1) - in that case fastpath is just fine
* after (4) - we'll see non-empty ->f_ep_link, slow path
taken
* between (2) and (3) - loop_check_gen is stable,
with ->mtx providing barriers and we end up taking slow path.
Note that ->f_ep_link emptiness check is slightly racy - we are protected
against insertions into that list, but removals can happen right under us.
Not a problem - in the worst case we'll end up taking a slow path for
no good reason.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 18306c404abe18a0972587a6266830583c60c928 upstream.
removes the need to clear it, along with the races.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f8d4f44df056c5b504b0d49683fb7279218fd207 upstream.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit a2bd970aa62f2f7f80fd0d212b1d4ccea5df4aed ]
the i2c_ram structure is missing the sdmatmp field mentionned in
datasheet for MPC8272 at paragraph 36.5. With this field missing, the
hardware would write past the allocated memory done through
cpm_muram_alloc for the i2c_ram structure and land in memory allocated
for the buffers descriptors corrupting the cbd_bufaddr field. Since this
field is only set during setup(), the first i2c transaction would work
and the following would send data read from an arbitrary memory
location.
Fixes: 61045dbe9d8d ("i2c: Add support for I2C bus on Freescale CPM1/CPM2 controllers")
Signed-off-by: Nicolas VINCENT <nicolas.vincent@vossloh.com>
Acked-by: Jochen Friedrich <jochen@scram.de>
Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 1a26044954a6d1f4d375d5e62392446af663be7a ]
if of_find_device_by_node() succeed, exynos_iommu_of_xlate() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling for this function implementation.
Fixes: aa759fd376fb ("iommu/exynos: Add callback for initializing devices from device tree")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200918011335.909141-1-yukuai3@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit f3bb0f796f5ffe32f0fbdce5b1b12eb85511158f ]
The ChipID IO region has it's own clock, which is being disabled while
scanning for unused clocks. It turned out that some CPU hotplug, CPU idle
or even SOC firmware code depends on the reads from that area. Fix the
mysterious hang caused by entering deep CPU idle state by ignoring the
'chipid' clock during unused clocks scan, as there are no direct clients
for it which will keep it enabled.
Fixes: e062b571777f ("clk: exynos4: register clocks using common clock framework")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200922124046.10496-1-m.szyprowski@samsung.com
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit d33030e2ee3508d65db5644551435310df86010e ]
nfs_readdir_page_filler() iterates over entries in a directory, reusing
the same security label buffer, but does not reset the buffer's length.
This causes decode_attr_security_label() to return -ERANGE if an entry's
security label is longer than the previous one's. This error, in
nfs4_decode_dirent(), only gets passed up as -EAGAIN, which causes another
failed attempt to copy into the buffer. The second error is ignored and
the remaining entries do not show up in ls, specifically the getdents64()
syscall.
Reproduce by creating multiple files in NFS and giving one of the later
files a longer security label. ls will not see that file nor any that are
added afterwards, though they will exist on the backend.
In nfs_readdir_page_filler(), reset security label buffer length before
every reuse
Signed-off-by: Jeffrey Mitchell <jeffrey.mitchell@starlab.io>
Fixes: b4487b935452 ("nfs: Fix getxattr kernel panic and memory overflow")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 9fb030a70431a2a2a1b292dbf0b2f399cc072c16 ]
This patch sets skb->protocol before transmitting frames on the HDLC
device, so that a user listening on the HDLC device with an AF_PACKET
socket will see outgoing frames' sll_protocol field correctly set and
consistent with that of incoming frames.
1. Control frames in hdlc_cisco and hdlc_ppp
When these drivers send control frames, skb->protocol is not set.
This value should be set to htons(ETH_P_HDLC), because when receiving
control frames, their skb->protocol is set to htons(ETH_P_HDLC).
When receiving, hdlc_type_trans in hdlc.h is called, which then calls
cisco_type_trans or ppp_type_trans. The skb->protocol of control frames
is set to htons(ETH_P_HDLC) so that the control frames can be received
by hdlc_rcv in hdlc.c, which calls cisco_rx or ppp_rx to process the
control frames.
2. hdlc_fr
When this driver sends control frames, skb->protocol is set to internal
values used in this driver.
When this driver sends data frames (from upper stacked PVC devices),
skb->protocol is the same as that of the user data packet being sent on
the upper PVC device (for normal PVC devices), or is htons(ETH_P_802_3)
(for Ethernet-emulating PVC devices).
However, skb->protocol for both control frames and data frames should be
set to htons(ETH_P_HDLC), because when receiving, all frames received on
the HDLC device will have their skb->protocol set to htons(ETH_P_HDLC).
When receiving, hdlc_type_trans in hdlc.h is called, and because this
driver doesn't provide a type_trans function in struct hdlc_proto,
all frames will have their skb->protocol set to htons(ETH_P_HDLC).
The frames are then received by hdlc_rcv in hdlc.c, which calls fr_rx
to process the frames (control frames are consumed and data frames
are re-received on upper PVC devices).
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 83f9a9c8c1edc222846dc1bde6e3479703e8e5a3 ]
This driver is a virtual driver stacked on top of Ethernet interfaces.
When this driver transmits data on the Ethernet device, the skb->protocol
setting is inconsistent with the Ethernet header prepended to the skb.
This causes a user listening on the Ethernet interface with an AF_PACKET
socket, to see different sll_protocol values for incoming and outgoing
frames, because incoming frames would have this value set by parsing the
Ethernet header.
This patch changes the skb->protocol value for outgoing Ethernet frames,
making it consistent with the Ethernet header prepended. This makes a
user listening on the Ethernet device with an AF_PACKET socket, to see
the same sll_protocol value for incoming and outgoing frames.
Cc: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 4202c9fdf03d79dedaa94b2c4cf574f25793d669 ]
Some WinCE devices face connectivity issues via the NDIS interface. They
fail to register, resulting in -110 timeout errors and failures during the
probe procedure.
In this kind of WinCE devices, the Windows-side ndis driver needs quite
more time to be loaded and configured, so that the linux rndis host queries
to them fail to be responded correctly on time.
More specifically, when INIT is called on the WinCE side - no other
requests can be served by the Client and this results in a failed QUERY
afterwards.
The increase of the waiting time on the side of the linux rndis host in
the command-response loop leaves the INIT process to complete and respond
to a QUERY, which comes afterwards. The WinCE devices with this special
"feature" in their ndis driver are satisfied by this fix.
Signed-off-by: Olympia Giannou <olympia.giannou@leica-geosystems.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit ee460417d254d941dfea5fb7cff841f589643992 ]
Increase Rx ring size to address issue where hardware is reaching
the receive work limit.
Before:
[ 102.223342] de2104x 0000:17:00.0 eth0: rx work limit reached
[ 102.245695] de2104x 0000:17:00.0 eth0: rx work limit reached
[ 102.251387] de2104x 0000:17:00.0 eth0: rx work limit reached
[ 102.267444] de2104x 0000:17:00.0 eth0: rx work limit reached
Signed-off-by: Lucy Yan <lucyyan@google.com>
Reviewed-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit a39d0d7bdf8c21ac7645c02e9676b5cb2b804c31 upstream.
A recent attempt to fix a ref count leak in
amdgpu_display_crtc_set_config() turned out to be doing too much and
"fixed" an intended decrease as if it were a leak. Undo that part to
restore the proper balance. This is the very nature of this function
to increase or decrease the power reference count depending on the
situation.
Consequences of this bug is that the power reference would
eventually get down to 0 while the display was still in use,
resulting in that display switching off unexpectedly.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: e008fa6fb415 ("drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config")
Cc: stable@vger.kernel.org
Cc: Navid Emamdoost <navid.emamdoost@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5fc27b098dafb8e30794a9db0705074c7d766179 upstream.
Touchpad on this laptop is not detected properly during boot, as PNP
enumerates (wrongly) AUX port as disabled on this machine.
Fix that by adding this board (with admittedly quite funny DMI
identifiers) to nopnp quirk list.
Reported-by: Andrés Barrantes Silman <andresbs2000@protonmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Link: https://lore.kernel.org/r/nycvar.YFH.7.76.2009252337340.3336@cbobk.fhfr.pm
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 214b0e1ad01abf4c1f6d8d28fa096bf167e47cef upstream.
The offset of regmap is incorrect, j * 8 is move to the
wrong register.
for example:
asume i = 0, j = 1. we want to set KPY5 as interrupt
falling edge mode, regmap[0][1] should be TC3589x_GPIOIBE1 0xcd
but, regmap[i] + j * 8 = TC3589x_GPIOIBE0 + 8 ,point to 0xd4,
this is TC3589x_GPIOIE2 not TC3589x_GPIOIBE1.
Fixes: d88b25be3584 ("gpio: Add TC35892 GPIO driver")
Cc: Cc: stable@vger.kernel.org
Signed-off-by: dillon min <dillon.minfei@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.238
af_key: pfkey_dump needs parameter validation
KVM: fix memory leak in kvm_io_bus_unregister_dev()
kprobes: fix kill kprobe which has been marked as gone
ftrace: Setup correct FTRACE_FL_REGS flags for module
RDMA/ucma: ucma_context reference leak in error path
mtd: Fix comparison in map_word_andequal()
hdlc_ppp: add range checks in ppp_cp_parse_cr()
tipc: use skb_unshare() instead in tipc_buf_append()
net: add __must_check to skb_put_padto()
ip: fix tos reflection in ack and reset packets
serial: 8250: Avoid error message on reprobe
scsi: aacraid: fix illegal IO beyond last LBA
m68k: q40: Fix info-leak in rtc_ioctl
gma/gma500: fix a memory disclosure bug due to uninitialized bytes
ASoC: kirkwood: fix IRQ error handling
PM / devfreq: tegra30: Fix integer overflow on CPU's freq max out
mtd: cfi_cmdset_0002: don't free cfi->cfiq in error path of cfi_amdstd_setup()
mfd: mfd-core: Protect against NULL call-back function pointer
tracing: Adding NULL checks for trace_array descriptor pointer
bcache: fix a lost wake-up problem caused by mca_cannibalize_lock
xfs: fix attr leaf header freemap.size underflow
kernel/sys.c: avoid copying possible padding bytes in copy_to_user
neigh_stat_seq_next() should increase position index
rt_cpu_seq_next should increase position index
seqlock: Require WRITE_ONCE surrounding raw_seqcount_barrier
ACPI: EC: Reference count query handlers under lock
tracing: Set kernel_stack's caller size properly
ar5523: Add USB ID of SMCWUSBT-G2 wireless adapter
Bluetooth: Fix refcount use-after-free issue
mm: pagewalk: fix termination condition in walk_pte_range()
Bluetooth: prefetch channel before killing sock
skbuff: fix a data race in skb_queue_len()
audit: CONFIG_CHANGE don't log internal bookkeeping as an event
selinux: sel_avc_get_stat_idx should increase position index
scsi: lpfc: Fix RQ buffer leakage when no IOCBs available
drm/omap: fix possible object reference leak
dmaengine: tegra-apb: Prevent race conditions on channel's freeing
media: go7007: Fix URB type for interrupt handling
Bluetooth: guard against controllers sending zero'd events
drm/amdgpu: increase atombios cmd timeout
Bluetooth: L2CAP: handle l2cap config request during open state
media: tda10071: fix unsigned sign extension overflow
tpm: ibmvtpm: Wait for buffer to be set before proceeding
tracing: Use address-of operator on section symbols
serial: 8250_omap: Fix sleeping function called from invalid context during probe
SUNRPC: Fix a potential buffer overflow in 'svc_print_xprts()'
ubifs: Fix out-of-bounds memory access caused by abnormal value of node_len
ALSA: usb-audio: Fix case when USB MIDI interface has more than one extra endpoint descriptor
mm/filemap.c: clear page error before actual read
mm/mmap.c: initialize align_offset explicitly for vm_unmapped_area
KVM: Remove CREATE_IRQCHIP/SET_PIT2 race
bdev: Reduce time holding bd_mutex in sync in blkdev_close()
drivers: char: tlclk.c: Avoid data race between init and interrupt handler
dt-bindings: sound: wm8994: Correct required supplies based on actual implementaion
atm: fix a memory leak of vcc->user_back
phy: samsung: s5pv210-usb2: Add delay after reset
Bluetooth: Handle Inquiry Cancel error after Inquiry Complete
USB: EHCI: ehci-mv: fix error handling in mv_ehci_probe()
tty: serial: samsung: Correct clock selection logic
ALSA: hda: Fix potential race in unsol event handler
fuse: don't check refcount after stealing page
USB: EHCI: ehci-mv: fix less than zero comparison of an unsigned int
e1000: Do not perform reset in reset_task if we are already down
printk: handle blank console arguments passed in.
vfio/pci: fix memory leaks of eventfd ctx
perf kcore_copy: Fix module map when there are no modules loaded
mtd: rawnand: omap_elm: Fix runtime PM imbalance on error
ceph: fix potential race in ceph_check_caps
mtd: parser: cmdline: Support MTD names containing one or more colons
x86/speculation/mds: Mark mds_user_clear_cpu_buffers() __always_inline
vfio/pci: Clear error and request eventfd ctx after releasing
vfio/pci: fix racy on error and request eventfd ctx
s390/init: add missing __init annotations
mwifiex: Increase AES key storage size to 256 bits
batman-adv: bla: fix type misuse for backbone_gw hash indexing
atm: eni: fix the missed pci_disable_device() for eni_init_one()
batman-adv: mcast/TT: fix wrongly dropped or rerouted packets
ALSA: asihpi: fix iounmap in error handler
MIPS: Add the missing 'CPU_1074K' into __get_cpu_type()
tty: vt, consw->con_scrolldelta cleanup
kprobes: Fix to check probe enabled before disarm_kprobe_ftrace()
lib/string.c: implement stpcpy
ata: define AC_ERR_OK
ata: make qc_prep return ata_completion_errors
ata: sata_mv, avoid trigerrable BUG_ON
Linux 4.4.238
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Icad47fa33334613e04af31218b3db45ddff7872a
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Link: https://lore.kernel.org/r/20200929105928.198942536@linuxfoundation.org
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e9f691d899188679746eeb96e6cb520459eda9b4 upstream.
There are several reports that the BUG_ON on unsupported command in
mv_qc_prep can be triggered under some circumstances:
https://bugzilla.suse.com/show_bug.cgi?id=1110252
https://serverfault.com/questions/888897/raid-problems-after-power-outage
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1652185
https://bugs.centos.org/view.php?id=14998
Let sata_mv handle the failure gracefully: warn about that incl. the
failed command number and return an AC_ERR_INVALID error. We can do that
now thanks to the previous patch.
Remove also the long-standing FIXME.
[v2] use %.2x as commands are defined as hexa.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 95364f36701e62dd50eee91e1303187fd1a9f567 upstream.
In case a driver wants to return an error from qc_prep, return enum
ata_completion_errors. sata_mv is one of those drivers -- see the next
patch. Other drivers return the newly defined AC_ERR_OK.
[v2] use enum ata_completion_errors and AC_ERR_OK.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 25937580a5065d6fbd92d9c8ebd47145ad80052e upstream.
Since we will return enum ata_completion_errors from qc_prep in the next
patch, let's define AC_ERR_OK to mark the OK status.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 1e1b6d63d6340764e00356873e5794225a2a03ea upstream.
LLVM implemented a recent "libcall optimization" that lowers calls to
`sprintf(dest, "%s", str)` where the return value is used to
`stpcpy(dest, str) - dest`.
This generally avoids the machinery involved in parsing format strings.
`stpcpy` is just like `strcpy` except it returns the pointer to the new
tail of `dest`. This optimization was introduced into clang-12.
Implement this so that we don't observe linkage failures due to missing
symbol definitions for `stpcpy`.
Similar to last year's fire drill with: commit 5f074f3e192f
("lib/string.c: implement a basic bcmp")
The kernel is somewhere between a "freestanding" environment (no full
libc) and "hosted" environment (many symbols from libc exist with the
same type, function signature, and semantics).
As Peter Anvin notes, there's not really a great way to inform the
compiler that you're targeting a freestanding environment but would like
to opt-in to some libcall optimizations (see pr/47280 below), rather
than opt-out.
Arvind notes, -fno-builtin-* behaves slightly differently between GCC
and Clang, and Clang is missing many __builtin_* definitions, which I
consider a bug in Clang and am working on fixing.
Masahiro summarizes the subtle distinction between compilers justly:
To prevent transformation from foo() into bar(), there are two ways in
Clang to do that; -fno-builtin-foo, and -fno-builtin-bar. There is
only one in GCC; -fno-buitin-foo.
(Any difference in that behavior in Clang is likely a bug from a missing
__builtin_* definition.)
Masahiro also notes:
We want to disable optimization from foo() to bar(),
but we may still benefit from the optimization from
foo() into something else. If GCC implements the same transform, we
would run into a problem because it is not -fno-builtin-bar, but
-fno-builtin-foo that disables that optimization.
In this regard, -fno-builtin-foo would be more future-proof than
-fno-built-bar, but -fno-builtin-foo is still potentially overkill. We
may want to prevent calls from foo() being optimized into calls to
bar(), but we still may want other optimization on calls to foo().
It seems that compilers today don't quite provide the fine grain control
over which libcall optimizations pseudo-freestanding environments would
prefer.
Finally, Kees notes that this interface is unsafe, so we should not
encourage its use. As such, I've removed the declaration from any
header, but it still needs to be exported to avoid linkage errors in
modules.
Reported-by: Sami Tolvanen <samitolvanen@google.com>
Suggested-by: Andy Lavr <andy.lavr@gmail.com>
Suggested-by: Arvind Sankar <nivedita@alum.mit.edu>
Suggested-by: Joe Perches <joe@perches.com>
Suggested-by: Kees Cook <keescook@chromium.org>
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20200914161643.938408-1-ndesaulniers@google.com
Link: https://bugs.llvm.org/show_bug.cgi?id=47162
Link: https://bugs.llvm.org/show_bug.cgi?id=47280
Link: https://github.com/ClangBuiltLinux/linux/issues/1126
Link: https://man7.org/linux/man-pages/man3/stpcpy.3.html
Link: https://pubs.opengroup.org/onlinepubs/9699919799/functions/stpcpy.html
Link: https://reviews.llvm.org/D85963
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e upstream.
Commit 0cb2f1372baa ("kprobes: Fix NULL pointer dereference at
kprobe_ftrace_handler") fixed one bug but not completely fixed yet.
If we run a kprobe_module.tc of ftracetest, kernel showed a warning
as below.
# ./ftracetest test.d/kprobe/kprobe_module.tc
=== Ftrace unit tests ===
[1] Kprobe dynamic event - probing module
...
[ 22.400215] ------------[ cut here ]------------
[ 22.400962] Failed to disarm kprobe-ftrace at trace_printk_irq_work+0x0/0x7e [trace_printk] (-2)
[ 22.402139] WARNING: CPU: 7 PID: 200 at kernel/kprobes.c:1091 __disarm_kprobe_ftrace.isra.0+0x7e/0xa0
[ 22.403358] Modules linked in: trace_printk(-)
[ 22.404028] CPU: 7 PID: 200 Comm: rmmod Not tainted 5.9.0-rc2+ #66
[ 22.404870] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014
[ 22.406139] RIP: 0010:__disarm_kprobe_ftrace.isra.0+0x7e/0xa0
[ 22.406947] Code: 30 8b 03 eb c9 80 3d e5 09 1f 01 00 75 dc 49 8b 34 24 89 c2 48 c7 c7 a0 c2 05 82 89 45 e4 c6 05 cc 09 1f 01 01 e8 a9 c7 f0 ff <0f> 0b 8b 45 e4 eb b9 89 c6 48 c7 c7 70 c2 05 82 89 45 e4 e8 91 c7
[ 22.409544] RSP: 0018:ffffc90000237df0 EFLAGS: 00010286
[ 22.410385] RAX: 0000000000000000 RBX: ffffffff83066024 RCX: 0000000000000000
[ 22.411434] RDX: 0000000000000001 RSI: ffffffff810de8d3 RDI: ffffffff810de8d3
[ 22.412687] RBP: ffffc90000237e10 R08: 0000000000000001 R09: 0000000000000001
[ 22.413762] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88807c478640
[ 22.414852] R13: ffffffff8235ebc0 R14: ffffffffa00060c0 R15: 0000000000000000
[ 22.415941] FS: 00000000019d48c0(0000) GS:ffff88807d7c0000(0000) knlGS:0000000000000000
[ 22.417264] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 22.418176] CR2: 00000000005bb7e3 CR3: 0000000078f7a000 CR4: 00000000000006a0
[ 22.419309] Call Trace:
[ 22.419990] kill_kprobe+0x94/0x160
[ 22.420652] kprobes_module_callback+0x64/0x230
[ 22.421470] notifier_call_chain+0x4f/0x70
[ 22.422184] blocking_notifier_call_chain+0x49/0x70
[ 22.422979] __x64_sys_delete_module+0x1ac/0x240
[ 22.423733] do_syscall_64+0x38/0x50
[ 22.424366] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 22.425176] RIP: 0033:0x4bb81d
[ 22.425741] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 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 e0 ff ff ff f7 d8 64 89 01 48
[ 22.428726] RSP: 002b:00007ffc70fef008 EFLAGS: 00000246 ORIG_RAX: 00000000000000b0
[ 22.430169] RAX: ffffffffffffffda RBX: 00000000019d48a0 RCX: 00000000004bb81d
[ 22.431375] RDX: 0000000000000000 RSI: 0000000000000880 RDI: 00007ffc70fef028
[ 22.432543] RBP: 0000000000000880 R08: 00000000ffffffff R09: 00007ffc70fef320
[ 22.433692] R10: 0000000000656300 R11: 0000000000000246 R12: 00007ffc70fef028
[ 22.434635] R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
[ 22.435682] irq event stamp: 1169
[ 22.436240] hardirqs last enabled at (1179): [<ffffffff810df542>] console_unlock+0x422/0x580
[ 22.437466] hardirqs last disabled at (1188): [<ffffffff810df19b>] console_unlock+0x7b/0x580
[ 22.438608] softirqs last enabled at (866): [<ffffffff81c0038e>] __do_softirq+0x38e/0x490
[ 22.439637] softirqs last disabled at (859): [<ffffffff81a00f42>] asm_call_on_stack+0x12/0x20
[ 22.440690] ---[ end trace 1e7ce7e1e4567276 ]---
[ 22.472832] trace_kprobe: This probe might be able to register after target module is loaded. Continue.
This is because the kill_kprobe() calls disarm_kprobe_ftrace() even
if the given probe is not enabled. In that case, ftrace_set_filter_ip()
fails because the given probe point is not registered to ftrace.
Fix to check the given (going) probe is enabled before invoking
disarm_kprobe_ftrace().
Link: https://lkml.kernel.org/r/159888672694.1411785.5987998076694782591.stgit@devnote2
Fixes: 0cb2f1372baa ("kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler")
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Chengming Zhou <zhouchengming@bytedance.com>
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 97293de977365fe672daec2523e66ef457104921 upstream.
* allow NULL consw->con_scrolldelta (some consoles define an empty
hook)
* => remove empty hooks now
* return value of consw->con_scrolldelta is never checked => make the
function void
* document consw->con_scrolldelta a bit
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: linux-usb@vger.kernel.org
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: Ajay Kaher <akaher@vmware.com>
[ for 4.4.y backport, only do the first change above, to prevent
.con_scrolldelta from being called if not present - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit e393fbe6fa27af23f78df6e16a8fd2963578a8c4 ]
Commit 442e14a2c55e ("MIPS: Add 1074K CPU support explicitly.") split
1074K from the 74K as an unique CPU type, while it missed to add the
'CPU_1074K' in __get_cpu_type(). So let's add it back.
Fixes: 442e14a2c55e ("MIPS: Add 1074K CPU support explicitly.")
Signed-off-by: Wei Li <liwei391@huawei.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 472eb39103e885f302fd8fd6eff104fcf5503f1b ]
clang static analysis flags this problem
hpioctl.c:513:7: warning: Branch condition evaluates to
a garbage value
if (pci.ap_mem_base[idx]) {
^~~~~~~~~~~~~~~~~~~~
If there is a failure in the middle of the memory space loop,
only some of the memory spaces need to be cleaned up.
At the error handler, idx holds the number of successful
memory spaces mapped. So rework the handler loop to use the
old idx.
There is a second problem, the memory space loop conditionally
iomaps()/sets the mem_base so it is necessay to initize pci.
Fixes: 719f82d3987a ("ALSA: Add support of AudioScience ASI boards")
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20200913165230.17166-1-trix@redhat.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 7dda5b3384121181c4e79f6eaeac2b94c0622c8d ]
The unicast packet rerouting code makes several assumptions. For
instance it assumes that there is always exactly one destination in the
TT. This breaks for multicast frames in a unicast packets in several ways:
For one thing if there is actually no TT entry and the destination node
was selected due to the multicast tvlv flags it announced. Then an
intermediate node will wrongly drop the packet.
For another thing if there is a TT entry but the TTVN of this entry is
newer than the originally addressed destination node: Then the
intermediate node will wrongly redirect the packet, leading to
duplicated multicast packets at a multicast listener and missing
packets at other multicast listeners or multicast routers.
Fixing this by not applying the unicast packet rerouting to batman-adv
unicast packets with a multicast payload. We are not able to detect a
roaming multicast listener at the moment and will just continue to send
the multicast frame to both the new and old destination for a while in
case of such a roaming multicast listener.
Fixes: a73105b8d4c7 ("batman-adv: improved client announcement mechanism")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit c2b947879ca320ac5505c6c29a731ff17da5e805 ]
eni_init_one() misses to call pci_disable_device() in an error path.
Jump to err_disable to fix it.
Fixes: ede58ef28e10 ("atm: remove deprecated use of pci api")
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 097930e85f90f252c44dc0d084598265dd44ca48 ]
It seems that due to a copy & paste error the void pointer
in batadv_choose_backbone_gw() is cast to the wrong type.
Fixing this by using "struct batadv_bla_backbone_gw" instead of "struct
batadv_bla_claim" which better matches the caller's side.
For now it seems that we were lucky because the two structs both have
their orig/vid and addr/vid in the beginning. However I stumbled over
this issue when I was trying to add some debug variables in front of
"orig" in batadv_backbone_gw, which caused hash lookups to fail.
Fixes: 07568d0369f9 ("batman-adv: don't rely on positions in struct for hashing")
Signed-off-by: Linus Lüssing <ll@simonwunderlich.de>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 4afc850e2e9e781976fb2c7852ce7bac374af938 ]
Following commit e18696786548 ("mwifiex: Prevent memory corruption
handling keys") the mwifiex driver fails to authenticate with certain
networks, specifically networks with 256 bit keys, and repeatedly asks
for the password. The kernel log repeats the following lines (id and
bssid redacted):
mwifiex_pcie 0000:01:00.0: info: trying to associate to '<id>' bssid <bssid>
mwifiex_pcie 0000:01:00.0: info: associated to bssid <bssid> successfully
mwifiex_pcie 0000:01:00.0: crypto keys added
mwifiex_pcie 0000:01:00.0: info: successfully disconnected from <bssid>: reason code 3
Tracking down this problem lead to the overflow check introduced by the
aforementioned commit into mwifiex_ret_802_11_key_material_v2(). This
check fails on networks with 256 bit keys due to the current storage
size for AES keys in struct mwifiex_aes_param being only 128 bit.
To fix this issue, increase the storage size for AES keys to 256 bit.
Fixes: e18696786548 ("mwifiex: Prevent memory corruption handling keys")
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Reported-by: Kaloyan Nikolov <konik98@gmail.com>
Tested-by: Kaloyan Nikolov <konik98@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200825153829.38043-1-luzmaximilian@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit fcb2b70cdb194157678fb1a75f9ff499aeba3d2a ]
Add __init to reserve_memory_end, reserve_oldmem and remove_oldmem.
Sometimes these functions are not inlined, and then the build
complains about section mismatch.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b872d0640840018669032b20b6375a478ed1f923 ]
The vfio_pci_release call will free and clear the error and request
eventfd ctx while these ctx could be in use at the same time in the
function like vfio_pci_request, and it's expected to protect them under
the vdev->igate mutex, which is missing in vfio_pci_release.
This issue is introduced since commit 1518ac272e78 ("vfio/pci: fix memory
leaks of eventfd ctx"),and since commit 5c5866c593bb ("vfio/pci: Clear
error and request eventfd ctx after releasing"), it's very easily to
trigger the kernel panic like this:
[ 9513.904346] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008
[ 9513.913091] Mem abort info:
[ 9513.915871] ESR = 0x96000006
[ 9513.918912] EC = 0x25: DABT (current EL), IL = 32 bits
[ 9513.924198] SET = 0, FnV = 0
[ 9513.927238] EA = 0, S1PTW = 0
[ 9513.930364] Data abort info:
[ 9513.933231] ISV = 0, ISS = 0x00000006
[ 9513.937048] CM = 0, WnR = 0
[ 9513.940003] user pgtable: 4k pages, 48-bit VAs, pgdp=0000007ec7d12000
[ 9513.946414] [0000000000000008] pgd=0000007ec7d13003, p4d=0000007ec7d13003, pud=0000007ec728c003, pmd=0000000000000000
[ 9513.956975] Internal error: Oops: 96000006 [#1] PREEMPT SMP
[ 9513.962521] Modules linked in: vfio_pci vfio_virqfd vfio_iommu_type1 vfio hclge hns3 hnae3 [last unloaded: vfio_pci]
[ 9513.972998] CPU: 4 PID: 1327 Comm: bash Tainted: G W 5.8.0-rc4+ #3
[ 9513.980443] Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 CS V3.B270.01 05/08/2020
[ 9513.989274] pstate: 80400089 (Nzcv daIf +PAN -UAO BTYPE=--)
[ 9513.994827] pc : _raw_spin_lock_irqsave+0x48/0x88
[ 9513.999515] lr : eventfd_signal+0x6c/0x1b0
[ 9514.003591] sp : ffff800038a0b960
[ 9514.006889] x29: ffff800038a0b960 x28: ffff007ef7f4da10
[ 9514.012175] x27: ffff207eefbbfc80 x26: ffffbb7903457000
[ 9514.017462] x25: ffffbb7912191000 x24: ffff007ef7f4d400
[ 9514.022747] x23: ffff20be6e0e4c00 x22: 0000000000000008
[ 9514.028033] x21: 0000000000000000 x20: 0000000000000000
[ 9514.033321] x19: 0000000000000008 x18: 0000000000000000
[ 9514.038606] x17: 0000000000000000 x16: ffffbb7910029328
[ 9514.043893] x15: 0000000000000000 x14: 0000000000000001
[ 9514.049179] x13: 0000000000000000 x12: 0000000000000002
[ 9514.054466] x11: 0000000000000000 x10: 0000000000000a00
[ 9514.059752] x9 : ffff800038a0b840 x8 : ffff007ef7f4de60
[ 9514.065038] x7 : ffff007fffc96690 x6 : fffffe01faffb748
[ 9514.070324] x5 : 0000000000000000 x4 : 0000000000000000
[ 9514.075609] x3 : 0000000000000000 x2 : 0000000000000001
[ 9514.080895] x1 : ffff007ef7f4d400 x0 : 0000000000000000
[ 9514.086181] Call trace:
[ 9514.088618] _raw_spin_lock_irqsave+0x48/0x88
[ 9514.092954] eventfd_signal+0x6c/0x1b0
[ 9514.096691] vfio_pci_request+0x84/0xd0 [vfio_pci]
[ 9514.101464] vfio_del_group_dev+0x150/0x290 [vfio]
[ 9514.106234] vfio_pci_remove+0x30/0x128 [vfio_pci]
[ 9514.111007] pci_device_remove+0x48/0x108
[ 9514.115001] device_release_driver_internal+0x100/0x1b8
[ 9514.120200] device_release_driver+0x28/0x38
[ 9514.124452] pci_stop_bus_device+0x68/0xa8
[ 9514.128528] pci_stop_and_remove_bus_device+0x20/0x38
[ 9514.133557] pci_iov_remove_virtfn+0xb4/0x128
[ 9514.137893] sriov_disable+0x3c/0x108
[ 9514.141538] pci_disable_sriov+0x28/0x38
[ 9514.145445] hns3_pci_sriov_configure+0x48/0xb8 [hns3]
[ 9514.150558] sriov_numvfs_store+0x110/0x198
[ 9514.154724] dev_attr_store+0x44/0x60
[ 9514.158373] sysfs_kf_write+0x5c/0x78
[ 9514.162018] kernfs_fop_write+0x104/0x210
[ 9514.166010] __vfs_write+0x48/0x90
[ 9514.169395] vfs_write+0xbc/0x1c0
[ 9514.172694] ksys_write+0x74/0x100
[ 9514.176079] __arm64_sys_write+0x24/0x30
[ 9514.179987] el0_svc_common.constprop.4+0x110/0x200
[ 9514.184842] do_el0_svc+0x34/0x98
[ 9514.188144] el0_svc+0x14/0x40
[ 9514.191185] el0_sync_handler+0xb0/0x2d0
[ 9514.195088] el0_sync+0x140/0x180
[ 9514.198389] Code: b9001020 d2800000 52800022 f9800271 (885ffe61)
[ 9514.204455] ---[ end trace 648de00c8406465f ]---
[ 9514.212308] note: bash[1327] exited with preempt_count 1
Cc: Qian Cai <cai@lca.pw>
Cc: Alex Williamson <alex.williamson@redhat.com>
Fixes: 1518ac272e78 ("vfio/pci: fix memory leaks of eventfd ctx")
Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
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[ Upstream commit 5c5866c593bbd444d0339ede6a8fb5f14ff66d72 ]
The next use of the device will generate an underflow from the
stale reference.
Cc: Qian Cai <cai@lca.pw>
Fixes: 1518ac272e78 ("vfio/pci: fix memory leaks of eventfd ctx")
Reported-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Tested-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit a7ef9ba986b5fae9d80f8a7b31db0423687efe4e ]
Prevent the compiler from uninlining and creating traceable/probable
functions as this is invoked _after_ context tracking switched to
CONTEXT_USER and rcu idle.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200505134340.902709267@linutronix.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
