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https://android.googlesource.com/kernel/common into lineage-18.1-caf-msm8998
This brings LA.UM.9.2.r1-01800-SDMxx0.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
300d539b8e6e2 ANDROID: usb: f_accessory: Wrap '_acc_dev' in get()/put() accessors
Conflicts:
drivers/usb/gadget/function/f_accessory.c
include/linux/spi/spi.h
Change-Id: Ifef5bfcb9d92b6d560126f0216369c567476f55d
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Changes in 4.4.248
net/af_iucv: set correct sk_protocol for child sockets
rose: Fix Null pointer dereference in rose_send_frame()
usbnet: ipheth: fix connectivity with iOS 14
bonding: wait for sysfs kobject destruction before freeing struct slave
netfilter: bridge: reset skb->pkt_type after NF_INET_POST_ROUTING traversal
net/x25: prevent a couple of overflows
cxgb3: fix error return code in t3_sge_alloc_qset()
net: pasemi: fix error return code in pasemi_mac_open()
dt-bindings: net: correct interrupt flags in examples
Input: xpad - support Ardwiino Controllers
Input: i8042 - add ByteSpeed touchpad to noloop table
powerpc: Stop exporting __clear_user which is now inlined.
btrfs: sysfs: init devices outside of the chunk_mutex
vlan: consolidate VLAN parsing code and limit max parsing depth
usb: gadget: f_fs: Use local copy of descriptors for userspace copy
USB: serial: kl5kusb105: fix memleak on open
USB: serial: ch341: add new Product ID for CH341A
USB: serial: ch341: sort device-id entries
USB: serial: option: add Fibocom NL668 variants
USB: serial: option: add support for Thales Cinterion EXS82
tty: Fix ->pgrp locking in tiocspgrp()
ALSA: hda/realtek - Add new codec supported for ALC897
ALSA: hda/generic: Add option to enforce preferred_dacs pairs
tty: Fix ->session locking
cifs: fix potential use-after-free in cifs_echo_request()
i2c: imx: Fix reset of I2SR_IAL flag
i2c: imx: Check for I2SR_IAL after every byte
arm64: assembler: make adr_l work in modules under KASLR
iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs
spi: Introduce device-managed SPI controller allocation
spi: bcm2835: Fix use-after-free on unbind
spi: bcm2835: Release the DMA channel if probe fails after dma_init
tracing: Fix userstacktrace option for instances
btrfs: cleanup cow block on error
mm/userfaultfd: do not access vma->vm_mm after calling handle_userfault()
gfs2: check for empty rgrp tree in gfs2_ri_update
Input: i8042 - fix error return code in i8042_setup_aux()
x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes
Linux 4.4.248
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ibe14a8d4e51b79235bf3afec20d773a593625c53
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commit bcee5278958802b40ee8b26679155a6d9231783e upstream.
When the instances were able to use their own options, the userstacktrace
option was left hardcoded for the top level. This made the instance
userstacktrace option bascially into a nop, and will confuse users that set
it, but nothing happens (I was confused when it happened to me!)
Cc: stable@vger.kernel.org
Fixes: 16270145ce6b ("tracing: Add trace options for core options to instances")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-06200-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
4cb652f2d058e ANDROID: cuttlefish_defconfig: Disable CONFIG_KSM
Conflicts:
arch/arm64/include/asm/mmu_context.h
arch/powerpc/include/asm/uaccess.h
drivers/scsi/ufs/ufshcd.c
Change-Id: I25e090fc1a5a7d379aa8f681371e9918b3adeda6
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Changes in 4.4.244
ring-buffer: Fix recursion protection transitions between interrupt context
gfs2: Wake up when sd_glock_disposal becomes zero
mm: mempolicy: fix potential pte_unmap_unlock pte error
time: Prevent undefined behaviour in timespec64_to_ns()
btrfs: reschedule when cloning lots of extents
net: xfrm: fix a race condition during allocing spi
perf tools: Add missing swap for ino_generation
ALSA: hda: prevent undefined shift in snd_hdac_ext_bus_get_link()
can: dev: can_get_echo_skb(): prevent call to kfree_skb() in hard IRQ context
can: dev: __can_get_echo_skb(): fix real payload length return value for RTR frames
can: can_create_echo_skb(): fix echo skb generation: always use skb_clone()
can: peak_usb: add range checking in decode operations
can: peak_usb: peak_usb_get_ts_time(): fix timestamp wrapping
Btrfs: fix missing error return if writeback for extent buffer never started
pinctrl: devicetree: Avoid taking direct reference to device name string
i40e: Wrong truncation from u16 to u8
i40e: Fix of memory leak and integer truncation in i40e_virtchnl.c
geneve: add transport ports in route lookup for geneve
ath9k_htc: Use appropriate rs_datalen type
usb: gadget: goku_udc: fix potential crashes in probe
gfs2: Free rd_bits later in gfs2_clear_rgrpd to fix use-after-free
gfs2: check for live vs. read-only file system in gfs2_fitrim
drm/amdgpu: perform srbm soft reset always on SDMA resume
mac80211: fix use of skb payload instead of header
cfg80211: regulatory: Fix inconsistent format argument
iommu/amd: Increase interrupt remapping table limit to 512 entries
xfs: fix a missing unlock on error in xfs_fs_map_blocks
of/address: Fix of_node memory leak in of_dma_is_coherent
cosa: Add missing kfree in error path of cosa_write
perf: Fix get_recursion_context()
ext4: correctly report "not supported" for {usr,grp}jquota when !CONFIG_QUOTA
ext4: unlock xattr_sem properly in ext4_inline_data_truncate()
usb: cdc-acm: Add DISABLE_ECHO for Renesas USB Download mode
mei: protect mei_cl_mtu from null dereference
ocfs2: initialize ip_next_orphan
don't dump the threads that had been already exiting when zapped.
drm/gma500: Fix out-of-bounds access to struct drm_device.vblank[]
pinctrl: amd: use higher precision for 512 RtcClk
pinctrl: amd: fix incorrect way to disable debounce filter
swiotlb: fix "x86: Don't panic if can not alloc buffer for swiotlb"
IPv6: Set SIT tunnel hard_header_len to zero
net/af_iucv: fix null pointer dereference on shutdown
net/x25: Fix null-ptr-deref in x25_connect
net: Update window_clamp if SOCK_RCVBUF is set
random32: make prandom_u32() output unpredictable
x86/speculation: Allow IBPB to be conditionally enabled on CPUs with always-on STIBP
xen/events: avoid removing an event channel while handling it
xen/events: add a proper barrier to 2-level uevent unmasking
xen/events: fix race in evtchn_fifo_unmask()
xen/events: add a new "late EOI" evtchn framework
xen/blkback: use lateeoi irq binding
xen/netback: use lateeoi irq binding
xen/scsiback: use lateeoi irq binding
xen/pciback: use lateeoi irq binding
xen/events: switch user event channels to lateeoi model
xen/events: use a common cpu hotplug hook for event channels
xen/events: defer eoi in case of excessive number of events
xen/events: block rogue events for some time
perf/core: Fix race in the perf_mmap_close() function
Revert "kernel/reboot.c: convert simple_strtoul to kstrtoint"
reboot: fix overflow parsing reboot cpu number
ext4: fix leaking sysfs kobject after failed mount
Convert trailing spaces and periods in path components
Linux 4.4.244
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I70bf4c5ac9248a8ca3383b9b0c4871729606e75e
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commit df5b0ab3e08a156701b537809914b339b0daa526 upstream.
Limit the CPU number to num_possible_cpus(), because setting it to a
value lower than INT_MAX but higher than NR_CPUS produces the following
error on reboot and shutdown:
BUG: unable to handle page fault for address: ffffffff90ab1bb0
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 1c09067 P4D 1c09067 PUD 1c0a063 PMD 0
Oops: 0000 [#1] SMP
CPU: 1 PID: 1 Comm: systemd-shutdow Not tainted 5.9.0-rc8-kvm #110
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014
RIP: 0010:migrate_to_reboot_cpu+0xe/0x60
Code: ea ea 00 48 89 fa 48 c7 c7 30 57 f1 81 e9 fa ef ff ff 66 2e 0f 1f 84 00 00 00 00 00 53 8b 1d d5 ea ea 00 e8 14 33 fe ff 89 da <48> 0f a3 15 ea fc bd 00 48 89 d0 73 29 89 c2 c1 e8 06 65 48 8b 3c
RSP: 0018:ffffc90000013e08 EFLAGS: 00010246
RAX: ffff88801f0a0000 RBX: 0000000077359400 RCX: 0000000000000000
RDX: 0000000077359400 RSI: 0000000000000002 RDI: ffffffff81c199e0
RBP: ffffffff81c1e3c0 R08: ffff88801f41f000 R09: ffffffff81c1e348
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00007f32bedf8830 R14: 00000000fee1dead R15: 0000000000000000
FS: 00007f32bedf8980(0000) GS:ffff88801f480000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff90ab1bb0 CR3: 000000001d057000 CR4: 00000000000006a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__do_sys_reboot.cold+0x34/0x5b
do_syscall_64+0x2d/0x40
Fixes: 1b3a5d02ee07 ("reboot: move arch/x86 reboot= handling to generic kernel")
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Robin Holt <robinmholt@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201103214025.116799-3-mcroce@linux.microsoft.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[sudip: use reboot_mode instead of mode]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8b92c4ff4423aa9900cf838d3294fcade4dbda35 upstream.
Patch series "fix parsing of reboot= cmdline", v3.
The parsing of the reboot= cmdline has two major errors:
- a missing bound check can crash the system on reboot
- parsing of the cpu number only works if specified last
Fix both.
This patch (of 2):
This reverts commit 616feab753972b97.
kstrtoint() and simple_strtoul() have a subtle difference which makes
them non interchangeable: if a non digit character is found amid the
parsing, the former will return an error, while the latter will just
stop parsing, e.g. simple_strtoul("123xyx") = 123.
The kernel cmdline reboot= argument allows to specify the CPU used for
rebooting, with the syntax `s####` among the other flags, e.g.
"reboot=warm,s31,force", so if this flag is not the last given, it's
silently ignored as well as the subsequent ones.
Fixes: 616feab75397 ("kernel/reboot.c: convert simple_strtoul to kstrtoint")
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Robin Holt <robinmholt@gmail.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201103214025.116799-2-mcroce@linux.microsoft.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[sudip: use reboot_mode instead of mode]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f91072ed1b7283b13ca57fcfbece5a3b92726143 upstream.
There's a possible race in perf_mmap_close() when checking ring buffer's
mmap_count refcount value. The problem is that the mmap_count check is
not atomic because we call atomic_dec() and atomic_read() separately.
perf_mmap_close:
...
atomic_dec(&rb->mmap_count);
...
if (atomic_read(&rb->mmap_count))
goto out_put;
<ring buffer detach>
free_uid
out_put:
ring_buffer_put(rb); /* could be last */
The race can happen when we have two (or more) events sharing same ring
buffer and they go through atomic_dec() and then they both see 0 as refcount
value later in atomic_read(). Then both will go on and execute code which
is meant to be run just once.
The code that detaches ring buffer is probably fine to be executed more
than once, but the problem is in calling free_uid(), which will later on
demonstrate in related crashes and refcount warnings, like:
refcount_t: addition on 0; use-after-free.
...
RIP: 0010:refcount_warn_saturate+0x6d/0xf
...
Call Trace:
prepare_creds+0x190/0x1e0
copy_creds+0x35/0x172
copy_process+0x471/0x1a80
_do_fork+0x83/0x3a0
__do_sys_wait4+0x83/0x90
__do_sys_clone+0x85/0xa0
do_syscall_64+0x5b/0x1e0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Using atomic decrease and check instead of separated calls.
Tested-by: Michael Petlan <mpetlan@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Wade Mealing <wmealing@redhat.com>
Fixes: 9bb5d40cd93c ("perf: Fix mmap() accounting hole");
Link: https://lore.kernel.org/r/20200916115311.GE2301783@krava
[sudip: backport to v4.9.y by using ring_buffer]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c51f8f88d705e06bd696d7510aff22b33eb8e638 upstream.
Non-cryptographic PRNGs may have great statistical properties, but
are usually trivially predictable to someone who knows the algorithm,
given a small sample of their output. An LFSR like prandom_u32() is
particularly simple, even if the sample is widely scattered bits.
It turns out the network stack uses prandom_u32() for some things like
random port numbers which it would prefer are *not* trivially predictable.
Predictability led to a practical DNS spoofing attack. Oops.
This patch replaces the LFSR with a homebrew cryptographic PRNG based
on the SipHash round function, which is in turn seeded with 128 bits
of strong random key. (The authors of SipHash have *not* been consulted
about this abuse of their algorithm.) Speed is prioritized over security;
attacks are rare, while performance is always wanted.
Replacing all callers of prandom_u32() is the quick fix.
Whether to reinstate a weaker PRNG for uses which can tolerate it
is an open question.
Commit f227e3ec3b5c ("random32: update the net random state on interrupt
and activity") was an earlier attempt at a solution. This patch replaces
it.
Reported-by: Amit Klein <aksecurity@gmail.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: tytso@mit.edu
Cc: Florian Westphal <fw@strlen.de>
Cc: Marc Plumb <lkml.mplumb@gmail.com>
Fixes: f227e3ec3b5c ("random32: update the net random state on interrupt and activity")
Signed-off-by: George Spelvin <lkml@sdf.org>
Link: https://lore.kernel.org/netdev/20200808152628.GA27941@SDF.ORG/
[ willy: partial reversal of f227e3ec3b5c; moved SIPROUND definitions
to prandom.h for later use; merged George's prandom_seed() proposal;
inlined siprand_u32(); replaced the net_rand_state[] array with 4
members to fix a build issue; cosmetic cleanups to make checkpatch
happy; fixed RANDOM32_SELFTEST build ]
[wt: backported to 4.4 -- no latent_entropy, drop prandom_reseed_late]
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 77f6ab8b7768cf5e6bdd0e72499270a0671506ee upstream.
Coredump logics needs to report not only the registers of the dumping
thread, but (since 2.5.43) those of other threads getting killed.
Doing that might require extra state saved on the stack in asm glue at
kernel entry; signal delivery logics does that (we need to be able to
save sigcontext there, at the very least) and so does seccomp.
That covers all callers of do_coredump(). Secondary threads get hit with
SIGKILL and caught as soon as they reach exit_mm(), which normally happens
in signal delivery, so those are also fine most of the time. Unfortunately,
it is possible to end up with secondary zapped when it has already entered
exit(2) (or, worse yet, is oopsing). In those cases we reach exit_mm()
when mm->core_state is already set, but the stack contents is not what
we would have in signal delivery.
At least on two architectures (alpha and m68k) it leads to infoleaks - we
end up with a chunk of kernel stack written into coredump, with the contents
consisting of normal C stack frames of the call chain leading to exit_mm()
instead of the expected copy of userland registers. In case of alpha we
leak 312 bytes of stack. Other architectures (including the regset-using
ones) might have similar problems - the normal user of regsets is ptrace
and the state of tracee at the time of such calls is special in the same
way signal delivery is.
Note that had the zapper gotten to the exiting thread slightly later,
it wouldn't have been included into coredump anyway - we skip the threads
that have already cleared their ->mm. So let's pretend that zapper always
loses the race. IOW, have exit_mm() only insert into the dumper list if
we'd gotten there from handling a fatal signal[*]
As the result, the callers of do_exit() that have *not* gone through get_signal()
are not seen by coredump logics as secondary threads. Which excludes voluntary
exit()/oopsen/traps/etc. The dumper thread itself is unaffected by that,
so seccomp is fine.
[*] originally I intended to add a new flag in tsk->flags, but ebiederman pointed
out that PF_SIGNALED is already doing just what we need.
Cc: stable@vger.kernel.org
Fixes: d89f3847def4 ("[PATCH] thread-aware coredumps, 2.5.43-C3")
History-tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
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 ce0f17fc93f63ee91428af10b7b2ddef38cd19e5 ]
One should use in_serving_softirq() to detect SoftIRQ context.
Fixes: 96f6d4444302 ("perf_counter: avoid recursion")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201030151955.120572175@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b02414c8f045ab3b9afc816c3735bc98c5c3d262 ]
The recursion protection of the ring buffer depends on preempt_count() to be
correct. But it is possible that the ring buffer gets called after an
interrupt comes in but before it updates the preempt_count(). This will
trigger a false positive in the recursion code.
Use the same trick from the ftrace function callback recursion code which
uses a "transition" bit that gets set, to allow for a single recursion for
to handle transitions between contexts.
Cc: stable@vger.kernel.org
Fixes: 567cd4da54ff4 ("ring-buffer: User context bit recursion checking")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.2.r1-07400-sdm660.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
34b1d1174c2c7 UPSTREAM: arm64: kaslr: Fix up the kernel image alignment
Conflicts:
scripts/setlocalversion
Change-Id: Id2981587a6e92eb10cfdc9b6d13cd4bd2abb5670
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A regression of the FTQ noise has been reported by Ying Huang,
on the following hardware:
8 threads Intel(R) Core(TM)i7-4770 CPU @ 3.40GHz with 8G memory
... which was caused by this commit:
commit 4e5160766fcc ("sched/fair: Propagate asynchrous detach")
The only part of the patch that can increase the noise is the update
of blocked load of group entity in update_blocked_averages().
We can optimize this call and skip the update of group entity if its load
and utilization are already null and there is no pending propagation of load
in the task group.
This optimization partly restores the noise score. A more agressive
optimization has been tried but has shown worse score.
Reported-by: ying.huang@linux.intel.com
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dietmar.eggemann@arm.com
Cc: ying.huang@intel.com
Fixes: 4e5160766fcc ("sched/fair: Propagate asynchrous detach")
Link: http://lkml.kernel.org/r/1489758442-2877-1-git-send-email-vincent.guittot@linaro.org
[ Fixed typos, improved layout. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit bc4278987e3874da62edf585fe8b3bdd9b53f638)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8b4018257c9c9f9cc5a0ed701b8e296a45781271
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Changes in 4.4.242
SUNRPC: ECONNREFUSED should cause a rebind.
scripts/setlocalversion: make git describe output more reliable
powerpc/powernv/opal-dump : Use IRQ_HANDLED instead of numbers in interrupt handler
efivarfs: Replace invalid slashes with exclamation marks in dentries.
ravb: Fix bit fields checking in ravb_hwtstamp_get()
tipc: fix memory leak caused by tipc_buf_append()
mtd: lpddr: Fix bad logic in print_drs_error
ata: sata_rcar: Fix DMA boundary mask
fscrypt: return -EXDEV for incompatible rename or link into encrypted dir
f2fs crypto: avoid unneeded memory allocation in ->readdir
powerpc/powernv/smp: Fix spurious DBG() warning
sparc64: remove mm_cpumask clearing to fix kthread_use_mm race
f2fs: fix to check segment boundary during SIT page readahead
um: change sigio_spinlock to a mutex
xfs: fix realtime bitmap/summary file truncation when growing rt volume
video: fbdev: pvr2fb: initialize variables
ath10k: fix VHT NSS calculation when STBC is enabled
mmc: via-sdmmc: Fix data race bug
printk: reduce LOG_BUF_SHIFT range for H8300
kgdb: Make "kgdbcon" work properly with "kgdb_earlycon"
USB: adutux: fix debugging
drivers/net/wan/hdlc_fr: Correctly handle special skb->protocol values
power: supply: test_power: add missing newlines when printing parameters by sysfs
md/bitmap: md_bitmap_get_counter returns wrong blocks
clk: ti: clockdomain: fix static checker warning
net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
drivers: watchdog: rdc321x_wdt: Fix race condition bugs
ext4: Detect already used quota file early
gfs2: add validation checks for size of superblock
memory: emif: Remove bogus debugfs error handling
ARM: dts: s5pv210: move PMU node out of clock controller
ARM: dts: s5pv210: remove dedicated 'audio-subsystem' node
md/raid5: fix oops during stripe resizing
leds: bcm6328, bcm6358: use devres LED registering function
NFS: fix nfs_path in case of a rename retry
ACPI / extlog: Check for RDMSR failure
ACPI: video: use ACPI backlight for HP 635 Notebook
acpi-cpufreq: Honor _PSD table setting on new AMD CPUs
w1: mxc_w1: Fix timeout resolution problem leading to bus error
scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove()
btrfs: reschedule if necessary when logging directory items
vt: keyboard, simplify vt_kdgkbsent
vt: keyboard, extend func_buf_lock to readers
dmaengine: dma-jz4780: Fix race in jz4780_dma_tx_status
iio:gyro:itg3200: Fix timestamp alignment and prevent data leak.
powerpc/powernv/elog: Fix race while processing OPAL error log event.
ubifs: dent: Fix some potential memory leaks while iterating entries
ubi: check kthread_should_stop() after the setting of task state
ia64: fix build error with !COREDUMP
ceph: promote to unsigned long long before shifting
libceph: clear con->out_msg on Policy::stateful_server faults
9P: Cast to loff_t before multiplying
ring-buffer: Return 0 on success from ring_buffer_resize()
vringh: fix __vringh_iov() when riov and wiov are different
tty: make FONTX ioctl use the tty pointer they were actually passed
arm64: berlin: Select DW_APB_TIMER_OF
cachefiles: Handle readpage error correctly
hil/parisc: Disable HIL driver when it gets stuck
ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
ARM: s3c24xx: fix missing system reset
device property: Keep secondary firmware node secondary by type
device property: Don't clear secondary pointer for shared primary firmware node
staging: comedi: cb_pcidas: Allow 2-channel commands for AO subdevice
xen/events: don't use chip_data for legacy IRQs
tipc: fix use-after-free in tipc_bcast_get_mode
gianfar: Replace skb_realloc_headroom with skb_cow_head for PTP
gianfar: Account for Tx PTP timestamp in the skb headroom
Fonts: Replace discarded const qualifier
ALSA: usb-audio: Add implicit feedback quirk for Qu-16
ftrace: Fix recursion check for NMI test
ftrace: Handle tracing when switching between context
ARM: dts: sun4i-a10: fix cpu_alert temperature
x86/kexec: Use up-to-dated screen_info copy to fill boot params
of: Fix reserved-memory overlap detection
scsi: core: Don't start concurrent async scan on same host
vsock: use ns_capable_noaudit() on socket create
vt: Disable KD_FONT_OP_COPY
fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent
serial: 8250_mtk: Fix uart_get_baud_rate warning
serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init
USB: serial: cyberjack: fix write-URB completion race
USB: serial: option: add LE910Cx compositions 0x1203, 0x1230, 0x1231
USB: serial: option: add Telit FN980 composition 0x1055
USB: Add NO_LPM quirk for Kingston flash drive
ARC: stack unwinding: avoid indefinite looping
Revert "ARC: entry: fix potential EFA clobber when TIF_SYSCALL_TRACE"
Linux 4.4.242
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I9c6408c403a91272e8255725dc8de294e522dc90
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commit b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948 upstream.
current->group_leader->exit_signal may change during copy_process() if
current->real_parent exits.
Move the assignment inside tasklist_lock to avoid the race.
Signed-off-by: Eddy Wu <eddy_wu@trendmicro.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 726b3d3f141fba6f841d715fc4d8a4a84f02c02a upstream.
When an interrupt or NMI comes in and switches the context, there's a delay
from when the preempt_count() shows the update. As the preempt_count() is
used to detect recursion having each context have its own bit get set when
tracing starts, and if that bit is already set, it is considered a recursion
and the function exits. But if this happens in that section where context
has changed but preempt_count() has not been updated, this will be
incorrectly flagged as a recursion.
To handle this case, create another bit call TRANSITION and test it if the
current context bit is already set. Flag the call as a recursion if the
TRANSITION bit is already set, and if not, set it and continue. The
TRANSITION bit will be cleared normally on the return of the function that
set it, or if the current context bit is clear, set it and clear the
TRANSITION bit to allow for another transition between the current context
and an even higher one.
Cc: stable@vger.kernel.org
Fixes: edc15cafcbfa3 ("tracing: Avoid unnecessary multiple recursion checks")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ee11b93f95eabdf8198edd4668bf9102e7248270 upstream.
The code that checks recursion will work to only do the recursion check once
if there's nested checks. The top one will do the check, the other nested
checks will see recursion was already checked and return zero for its "bit".
On the return side, nothing will be done if the "bit" is zero.
The problem is that zero is returned for the "good" bit when in NMI context.
This will set the bit for NMIs making it look like *all* NMI tracing is
recursing, and prevent tracing of anything in NMI context!
The simple fix is to return "bit + 1" and subtract that bit on the end to
get the real bit.
Cc: stable@vger.kernel.org
Fixes: edc15cafcbfa3 ("tracing: Avoid unnecessary multiple recursion checks")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0a1754b2a97efa644aa6e84d1db5b17c42251483 upstream.
We don't need to check the new buffer size, and the return value
had confused resize_buffer_duplicate_size().
...
ret = ring_buffer_resize(trace_buf->buffer,
per_cpu_ptr(size_buf->data,cpu_id)->entries, cpu_id);
if (ret == 0)
per_cpu_ptr(trace_buf->data, cpu_id)->entries =
per_cpu_ptr(size_buf->data, cpu_id)->entries;
...
Link: https://lkml.kernel.org/r/20201019142242.11560-1-hqjagain@gmail.com
Cc: stable@vger.kernel.org
Fixes: d60da506cbeb3 ("tracing: Add a resize function to make one buffer equivalent to another buffer")
Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit b18b099e04f450cdc77bec72acefcde7042bd1f3 ]
On my system the kernel processes the "kgdb_earlycon" parameter before
the "kgdbcon" parameter. When we setup "kgdb_earlycon" we'll end up
in kgdb_register_callbacks() and "kgdb_use_con" won't have been set
yet so we'll never get around to starting "kgdbcon". Let's remedy
this by detecting that the IO module was already registered when
setting "kgdb_use_con" and registering the console then.
As part of this, to avoid pre-declaring things, move the handling of
the "kgdbcon" further down in the file.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20200630151422.1.I4aa062751ff5e281f5116655c976dff545c09a46@changeid
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Changes in 4.4.241
ibmveth: Identify ingress large send packets.
tipc: fix the skb_unshare() in tipc_buf_append()
net/ipv4: always honour route mtu during forwarding
r8169: fix data corruption issue on RTL8402
ALSA: bebob: potential info leak in hwdep_read()
mm/kasan: print name of mem[set,cpy,move]() caller in report
mm/kasan: add API to check memory regions
compiler.h, kasan: Avoid duplicating __read_once_size_nocheck()
compiler.h: Add read_word_at_a_time() function.
lib/strscpy: Shut up KASAN false-positives in strscpy()
x86/mm/ptdump: Fix soft lockup in page table walker
net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device
net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling ether_setup
nfc: Ensure presence of NFC_ATTR_FIRMWARE_NAME attribute in nfc_genl_fw_download()
tcp: fix to update snd_wl1 in bulk receiver fast path
icmp: randomize the global rate limiter
cifs: remove bogus debug code
ima: Don't ignore errors from crypto_shash_update()
EDAC/i5100: Fix error handling order in i5100_init_one()
crypto: ixp4xx - Fix the size used in a 'dma_free_coherent()' call
media: Revert "media: exynos4-is: Add missed check for pinctrl_lookup_state()"
media: m5mols: Check function pointer in m5mols_sensor_power
media: omap3isp: Fix memleak in isp_probe
crypto: omap-sham - fix digcnt register handling with export/import
media: tc358743: initialize variable
media: ti-vpe: Fix a missing check and reference count leak
ath6kl: prevent potential array overflow in ath6kl_add_new_sta()
ath9k: Fix potential out of bounds in ath9k_htc_txcompletion_cb()
wcn36xx: Fix reported 802.11n rx_highest rate wcn3660/wcn3680
mwifiex: Do not use GFP_KERNEL in atomic context
drm/gma500: fix error check
scsi: qla4xxx: Fix an error handling path in 'qla4xxx_get_host_stats()'
scsi: csiostor: Fix wrong return value in csio_hw_prep_fw()
backlight: sky81452-backlight: Fix refcount imbalance on error
VMCI: check return value of get_user_pages_fast() for errors
tty: serial: earlycon dependency
tty: hvcs: Don't NULL tty->driver_data until hvcs_cleanup()
pty: do tty_flip_buffer_push without port->lock in pty_write
drivers/virt/fsl_hypervisor: Fix error handling path
video: fbdev: vga16fb: fix setting of pixclock because a pass-by-value error
video: fbdev: sis: fix null ptr dereference
HID: roccat: add bounds checking in kone_sysfs_write_settings()
ath6kl: wmi: prevent a shift wrapping bug in ath6kl_wmi_delete_pstream_cmd()
misc: mic: scif: Fix error handling path
ALSA: seq: oss: Avoid mutex lock for a long-time ioctl
quota: clear padding in v2r1_mem2diskdqb()
net: enic: Cure the enic api locking trainwreck
mfd: sm501: Fix leaks in probe()
usb: gadget: u_ether: enable qmult on SuperSpeed Plus as well
nl80211: fix non-split wiphy information
mwifiex: fix double free
net: korina: fix kfree of rx/tx descriptor array
IB/mlx4: Adjust delayed work when a dup is observed
powerpc/pseries: Fix missing of_node_put() in rng_init()
powerpc/icp-hv: Fix missing of_node_put() in success path
mtd: lpddr: fix excessive stack usage with clang
mtd: mtdoops: Don't write panic data twice
ARM: 9007/1: l2c: fix prefetch bits init in L2X0_AUX_CTRL using DT values
powerpc/tau: Use appropriate temperature sample interval
powerpc/tau: Remove duplicated set_thresholds() call
powerpc/tau: Disable TAU between measurements
perf intel-pt: Fix "context_switch event has no tid" error
kdb: Fix pager search for multi-line strings
powerpc/perf/hv-gpci: Fix starting index value
cpufreq: powernv: Fix frame-size-overflow in powernv_cpufreq_reboot_notifier
lib/crc32.c: fix trivial typo in preprocessor condition
vfio/pci: Clear token on bypass registration failure
Input: imx6ul_tsc - clean up some errors in imx6ul_tsc_resume()
Input: ep93xx_keypad - fix handling of platform_get_irq() error
Input: omap4-keypad - fix handling of platform_get_irq() error
Input: sun4i-ps2 - fix handling of platform_get_irq() error
KVM: x86: emulating RDPID failure shall return #UD rather than #GP
memory: omap-gpmc: Fix a couple off by ones
memory: fsl-corenet-cf: Fix handling of platform_get_irq() error
arm64: dts: zynqmp: Remove additional compatible string for i2c IPs
powerpc/powernv/dump: Fix race while processing OPAL dump
media: firewire: fix memory leak
media: ati_remote: sanity check for both endpoints
media: exynos4-is: Fix several reference count leaks due to pm_runtime_get_sync
media: exynos4-is: Fix a reference count leak due to pm_runtime_get_sync
media: exynos4-is: Fix a reference count leak
media: bdisp: Fix runtime PM imbalance on error
media: media/pci: prevent memory leak in bttv_probe
media: uvcvideo: Ensure all probed info is returned to v4l2
mmc: sdio: Check for CISTPL_VERS_1 buffer size
media: saa7134: avoid a shift overflow
ntfs: add check for mft record size in superblock
PM: hibernate: remove the bogus call to get_gendisk() in software_resume()
scsi: mvumi: Fix error return in mvumi_io_attach()
scsi: target: core: Add CONTROL field for trace events
usb: gadget: function: printer: fix use-after-free in __lock_acquire
udf: Limit sparing table size
udf: Avoid accessing uninitialized data on failed inode read
ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs()
misc: rtsx: Fix memory leak in rtsx_pci_probe
reiserfs: only call unlock_new_inode() if I_NEW
xfs: make sure the rt allocator doesn't run off the end
usb: ohci: Default to per-port over-current protection
Bluetooth: Only mark socket zapped after unlocking
scsi: ibmvfc: Fix error return in ibmvfc_probe()
brcmsmac: fix memory leak in wlc_phy_attach_lcnphy
rtl8xxxu: prevent potential memory leak
Fix use after free in get_capset_info callback.
tty: ipwireless: fix error handling
ipvs: Fix uninit-value in do_ip_vs_set_ctl()
reiserfs: Fix memory leak in reiserfs_parse_options()
brcm80211: fix possible memleak in brcmf_proto_msgbuf_attach
usb: core: Solve race condition in anchor cleanup functions
ath10k: check idx validity in __ath10k_htt_rx_ring_fill_n()
net: korina: cast KSEG0 address to pointer in kfree
usb: cdc-acm: add quirk to blacklist ETAS ES58X devices
USB: cdc-wdm: Make wdm_flush() interruptible and add wdm_fsync().
Linux 4.4.241
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I996be1c1248d000431eb6f5c53472dbafba8bd9c
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[ Upstream commit 428805c0c5e76ef643b1fbc893edfb636b3d8aef ]
get_gendisk grabs a reference on the disk and file operation, so this
code will leak both of them while having absolutely no use for the
gendisk itself.
This effectively reverts commit 2df83fa4bce421f ("PM / Hibernate: Use
get_gendisk to verify partition if resume_file is integer format")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit d081a6e353168f15e63eb9e9334757f20343319f ]
Currently using forward search doesn't handle multi-line strings correctly.
The search routine replaces line breaks with \0 during the search and, for
regular searches ("help | grep Common\n"), there is code after the line
has been discarded or printed to replace the break character.
However during a pager search ("help\n" followed by "/Common\n") when the
string is matched we will immediately return to normal output and the code
that should restore the \n becomes unreachable. Fix this by restoring the
replaced character when we disable the search mode and update the comment
accordingly.
Fixes: fb6daa7520f9d ("kdb: Provide forward search at more prompt")
Link: https://lore.kernel.org/r/20200909141708.338273-1-daniel.thompson@linaro.org
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-06000-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
7a9986e91f909 UPSTREAM: binder: fix UAF when releasing todo list
Conflicts:
fs/eventpoll.c
Change-Id: I77260d03cb539d7e7eefcea360aee2d59bb9e0cb
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Changes in 4.4.239
gpio: tc35894: fix up tc35894 interrupt configuration
Input: i8042 - add nopnp quirk for Acer Aspire 5 A515
drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
net: dec: de2104x: Increase receive ring size for Tulip
rndis_host: increase sleep time in the query-response loop
drivers/net/wan/lapbether: Make skb->protocol consistent with the header
drivers/net/wan/hdlc: Set skb->protocol before transmitting
nfs: Fix security label length not being reset
clk: samsung: exynos4: mark 'chipid' clock as CLK_IGNORE_UNUSED
iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()
i2c: cpm: Fix i2c_ram structure
epoll: do not insert into poll queues until all sanity checks are done
epoll: replace ->visited/visited_list with generation count
epoll: EPOLL_CTL_ADD: close the race in decision to take fast path
ep_create_wakeup_source(): dentry name can change under you...
netfilter: ctnetlink: add a range check for l3/l4 protonum
fbdev, newport_con: Move FONT_EXTRA_WORDS macros into linux/font.h
Fonts: Support FONT_EXTRA_WORDS macros for built-in fonts
Revert "ravb: Fixed to be able to unload modules"
fbcon: Fix global-out-of-bounds read in fbcon_get_font()
net: wireless: nl80211: fix out-of-bounds access in nl80211_del_key()
usermodehelper: reset umask to default before executing user process
platform/x86: thinkpad_acpi: initialize tp_nvram_state variable
platform/x86: thinkpad_acpi: re-initialize ACPI buffer size when reuse
driver core: Fix probe_count imbalance in really_probe()
perf top: Fix stdio interface input handling with glibc 2.28+
sctp: fix sctp_auth_init_hmacs() error path
team: set dev->needed_headroom in team_setup_by_port()
net: team: fix memory leak in __team_options_register
mtd: nand: Provide nand_cleanup() function to free NAND related resources
xfrm: clone XFRMA_REPLAY_ESN_VAL in xfrm_do_migrate
xfrm: clone whole liftime_cur structure in xfrm_do_migrate
net: stmmac: removed enabling eee in EEE set callback
xfrm: Use correct address family in xfrm_state_find
bonding: set dev->needed_headroom in bond_setup_by_slave()
rxrpc: Fix rxkad token xdr encoding
rxrpc: Downgrade the BUG() for unsupported token type in rxrpc_read()
rxrpc: Fix server keyring leak
net: usb: rtl8150: set random MAC address when set_ethernet_addr() fails
Linux 4.4.239
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iac33b64c570b076bdc997d9778628d2ffbc3fef0
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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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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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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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[ Upstream commit 48021f98130880dd74286459a1ef48b5e9bc374f ]
If uboot passes a blank string to console_setup then it results in
a trashed memory. Ultimately, the kernel crashes during freeing up
the memory.
This fix checks if there is a blank parameter being
passed to console_setup from uboot. In case it detects that
the console parameter is blank then it doesn't setup the serial
device and it gracefully exits.
Link: https://lore.kernel.org/r/20200522065306.83-1-shreyas.joshi@biamp.com
Signed-off-by: Shreyas Joshi <shreyas.joshi@biamp.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
[pmladek@suse.com: Better format the commit message and code, remove unnecessary brackets.]
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit bf2cbe044da275021b2de5917240411a19e5c50d ]
Clang warns:
../kernel/trace/trace.c:9335:33: warning: array comparison always
evaluates to true [-Wtautological-compare]
if (__stop___trace_bprintk_fmt != __start___trace_bprintk_fmt)
^
1 warning generated.
These are not true arrays, they are linker defined symbols, which are
just addresses. Using the address of operator silences the warning and
does not change the runtime result of the check (tested with some print
statements compiled in with clang + ld.lld and gcc + ld.bfd in QEMU).
Link: http://lkml.kernel.org/r/20200220051011.26113-1-natechancellor@gmail.com
Link: https://github.com/ClangBuiltLinux/linux/issues/893
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 70b3eeed49e8190d97139806f6fbaf8964306cdb ]
Common Criteria calls out for any action that modifies the audit trail to
be recorded. That usually is interpreted to mean insertion or removal of
rules. It is not required to log modification of the inode information
since the watch is still in effect. Additionally, if the rule is a never
rule and the underlying file is one they do not want events for, they
get an event for this bookkeeping update against their wishes.
Since no device/inode info is logged at insertion and no device/inode
information is logged on update, there is nothing meaningful being
communicated to the admin by the CONFIG_CHANGE updated_rules event. One
can assume that the rule was not "modified" because it is still watching
the intended target. If the device or inode cannot be resolved, then
audit_panic is called which is sufficient.
The correct resolution is to drop logging config_update events since
the watch is still in effect but just on another unknown inode.
Signed-off-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit cbc3b92ce037f5e7536f6db157d185cd8b8f615c ]
I noticed when trying to use the trace-cmd python interface that reading the raw
buffer wasn't working for kernel_stack events. This is because it uses a
stubbed version of __dynamic_array that doesn't do the __data_loc trick and
encode the length of the array into the field. Instead it just shows up as a
size of 0. So change this to __array and set the len to FTRACE_STACK_ENTRIES
since this is what we actually do in practice and matches how user_stack_trace
works.
Link: http://lkml.kernel.org/r/1411589652-1318-1-git-send-email-jbacik@fb.com
Signed-off-by: Josef Bacik <jbacik@fb.com>
[ Pulled from the archeological digging of my INBOX ]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 5e1aada08cd19ea652b2d32a250501d09b02ff2e ]
Initialization is not guaranteed to zero padding bytes so use an
explicit memset instead to avoid leaking any kernel content in any
possible padding bytes.
Link: http://lkml.kernel.org/r/dfa331c00881d61c8ee51577a082d8bebd61805c.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 953ae45a0c25e09428d4a03d7654f97ab8a36647 ]
As part of commit f45d1225adb0 ("tracing: Kernel access to Ftrace
instances") we exported certain functions. Here, we are adding some additional
NULL checks to ensure safe usage by users of these APIs.
Link: http://lkml.kernel.org/r/1565805327-579-4-git-send-email-divya.indi@oracle.com
Signed-off-by: Divya Indi <divya.indi@oracle.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 8a224ffb3f52b0027f6b7279854c71a31c48fc97 ]
When module loaded and enabled, we will use __ftrace_replace_code
for module if any ftrace_ops referenced it found. But we will get
wrong ftrace_addr for module rec in ftrace_get_addr_new, because
rec->flags has not been setup correctly. It can cause the callback
function of a ftrace_ops has FTRACE_OPS_FL_SAVE_REGS to be called
with pt_regs set to NULL.
So setup correct FTRACE_FL_REGS flags for rec when we call
referenced_filters to find ftrace_ops references it.
Link: https://lkml.kernel.org/r/20200728180554.65203-1-zhouchengming@bytedance.com
Cc: stable@vger.kernel.org
Fixes: 8c4f3c3fa9681 ("ftrace: Check module functions being traced on reload")
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b0399092ccebd9feef68d4ceb8d6219a8c0caa05 ]
If a kprobe is marked as gone, we should not kill it again. Otherwise, we
can disarm the kprobe more than once. In that case, the statistics of
kprobe_ftrace_enabled can unbalance which can lead to that kprobe do not
work.
Fixes: e8386a0cb22f ("kprobes: support probing module __exit function")
Co-developed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Song Liu <songliubraving@fb.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20200822030055.32383-1-songmuchun@bytedance.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Changes in 4.4.237
ARM: dts: socfpga: fix register entry for timer3 on Arria10
scsi: libsas: Set data_dir as DMA_NONE if libata marks qc as NODATA
drivers/net/wan/lapbether: Added needed_tailroom
firestream: Fix memleak in fs_open
drivers/net/wan/lapbether: Set network_header before transmitting
xfs: initialize the shortform attr header padding entry
drivers/net/wan/hdlc_cisco: Add hard_header_len
ALSA: hda: fix a runtime pm issue in SOF when integrated GPU is disabled
gcov: Disable gcov build with GCC 10
iio: adc: mcp3422: fix locking scope
iio: adc: mcp3422: fix locking on error path
iio:light:ltr501 Fix timestamp alignment issue.
iio:accel:bmc150-accel: Fix timestamp alignment and prevent data leak.
iio:accel:mma8452: Fix timestamp alignment and prevent data leak.
USB: core: add helpers to retrieve endpoints
staging: wlan-ng: fix out of bounds read in prism2sta_probe_usb()
btrfs: fix wrong address when faulting in pages in the search ioctl
scsi: target: iscsi: Fix hang in iscsit_access_np() when getting tpg->np_login_sem
rbd: require global CAP_SYS_ADMIN for mapping and unmapping
fbcon: remove soft scrollback code
fbcon: remove now unusued 'softback_lines' cursor() argument
vgacon: remove software scrollback support
KVM: VMX: Don't freeze guest when event delivery causes an APIC-access exit
video: fbdev: fix OOB read in vga_8planes_imageblit()
USB: serial: ftdi_sio: add IDs for Xsens Mti USB converter
USB: serial: option: add support for SIM7070/SIM7080/SIM7090 modules
usb: Fix out of sync data toggle if a configured device is reconfigured
gcov: add support for GCC 10.1
NFSv4.1 handle ERR_DELAY error reclaiming locking state on delegation recall
scsi: pm8001: Fix memleak in pm8001_exec_internal_task_abort
scsi: lpfc: Fix FLOGI/PLOGI receive race condition in pt2pt discovery
SUNRPC: stop printk reading past end of string
rapidio: Replace 'select' DMAENGINES 'with depends on'
i2c: algo: pca: Reapply i2c bus settings after reset
MIPS: SNI: Fix MIPS_L1_CACHE_SHIFT
perf test: Free formats for perf pmu parse test
fbcon: Fix user font detection test at fbcon_resize().
MIPS: SNI: Fix spurious interrupts
USB: quirks: Add USB_QUIRK_IGNORE_REMOTE_WAKEUP quirk for BYD zhaoxin notebook
USB: UAS: fix disconnect by unplugging a hub
usblp: fix race between disconnect() and read()
Input: i8042 - add Entroware Proteus EL07R4 to nomux and reset lists
serial: 8250_pci: Add Realtek 816a and 816b
ehci-hcd: Move include to keep CRC stable
powerpc/dma: Fix dma_map_ops::get_required_mask
x86/defconfig: Enable CONFIG_USB_XHCI_HCD=y
Linux 4.4.237
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If3f7701823084090849a6866ba1e52a0276c9621
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[ Upstream commit 40249c6962075c040fd071339acae524f18bfac9 ]
Using gcov to collect coverage data for kernels compiled with GCC 10.1
causes random malfunctions and kernel crashes. This is the result of a
changed GCOV_COUNTERS value in GCC 10.1 that causes a mismatch between
the layout of the gcov_info structure created by GCC profiling code and
the related structure used by the kernel.
Fix this by updating the in-kernel GCOV_COUNTERS value. Also re-enable
config GCOV_KERNEL for use with GCC 10.
Reported-by: Colin Ian King <colin.king@canonical.com>
Reported-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Tested-by: Leon Romanovsky <leonro@nvidia.com>
Tested-and-Acked-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit cfc905f158eaa099d6258031614d11869e7ef71c ]
GCOV built with GCC 10 doesn't initialize n_function variable. This
produces different kernel panics as was seen by Colin in Ubuntu and me
in FC 32.
As a workaround, let's disable GCOV build for broken GCC 10 version.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891288
Link: https://lore.kernel.org/lkml/20200827133932.3338519-1-leon@kernel.org
Link: https://lore.kernel.org/lkml/CAHk-=whbijeSdSvx-Xcr0DPMj0BiwhJ+uiNnDSVZcr_h_kg7UA@mail.gmail.com/
Cc: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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https://source.codeaurora.org/quic/la/kernel/msm-4.4 into lineage-17.1-caf-msm8998
* tag 'LA.UM.8.4.r1-06000-8x98.0' of https://source.codeaurora.org/quic/la/kernel/msm-4.4:
asoc: add missing null check for pcm pointer of snd_pcm_volume
Revert "include: Fix for compilation issue"
media: uvcvideo: Avoid cyclic entity chains due to malformed USB descriptors
soc: add proxy ports for call screening in machine driver
ARM: dts: msm: add CPU dai for additional proxy ports
Input: add safety guards to input_set_keycode()
sched: Fix out of bounds issue in for_each_cluster macro
msm: kgsl: skip if requested address doesn't fall in the svm range
msm: kgsl: Remove VM_MAYWRITE flag to restrict mprotect
msm: kgsl: Correctly clean up dma buffer attachment in case of error
msm: kgsl: Mark the scratch buffer as privileged
msm: kgsl: Fix possible use-after-free while adding context to active list
asoc: add new path for in call recording
Change-Id: Ic6596e831ef92bab7134db0f49dccaab132dcd56
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[ 31.504753] =================================================================
[ 31.512215] BUG: KASAN: global-out-of-bounds in core_ctl_set_boost+0x554/0x558
[ 31.519637] Read of size 4 at addr ffffffd0327c18f4 by task init/456
[ 31.526160]
[ 31.527707] CPU: 1 PID: 456 Comm: init Tainted: G S W 5.4.12-qgki-debug-gdc9adf3559a6-dirty #25
[ 31.537793] Hardware name: Qualcomm Technologies, Inc. 8350 venus (DT)
[ 31.544499] Call trace:
[ 31.547026] dump_backtrace+0x0/0x2e0
[ 31.550797] show_stack+0x14/0x20
[ 31.554220] dump_stack+0xf0/0x144
[ 31.557732] print_address_description.isra.7+0x3c/0x3d8
[ 31.563190] __kasan_report+0x158/0x23c
[ 31.567144] kasan_report+0xc/0x18
[ 31.570649] __asan_report_load4_noabort+0x18/0x20
[ 31.575572] core_ctl_set_boost+0x554/0x558
[ 31.579881] z3d22747cee+0x14/0x58
[ 31.583385] z991cee001b+0x884/0xd70
[ 31.587071] sched_boost_handler+0xe4/0x108
[ 31.591381] proc_sys_call_handler+0x384/0x420
[ 31.595954] proc_sys_write+0x10/0x18
[ 31.599728] __vfs_write+0x54/0xe8
[ 31.603232] vfs_write+0x15c/0x430
[ 31.606736] ksys_write+0xe8/0x1c0
[ 31.610241] __arm64_sys_write+0x68/0x98
[ 31.614282] el0_svc_common.constprop.0+0x1c0/0x370
[ 31.619302] el0_svc_handler+0xd4/0x178
[ 31.623257] el0_svc+0x8/0xc
Change-Id: I71e71d61e080c1ce948bd0400f9ebb0705a2210b
Signed-off-by: Kassey Li <yingangl@codeaurora.org>
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
[rshaha: Resolved trivial merge conflicts]
Signed-off-by: Rahul Shahare <rshaha@codeaurora.org>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-05900-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
5fd2d19eeb976 Merge 4.4.236 into android-4.4-p
Conflicts:
drivers/scsi/ufs/ufshcd.c
Change-Id: I22282a0d571bdb72f50d3fc1e2cee4443de1f7f4
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Changes in 4.4.235
net: Fix potential wrong skb->protocol in skb_vlan_untag()
tipc: fix uninit skb->data in tipc_nl_compat_dumpit()
ipvlan: fix device features
bonding: show saner speed for broadcast mode
bonding: fix a potential double-unregister
powerpc/pseries: Do not initiate shutdown when system is running on UPS
ALSA: pci: delete repeated words in comments
ASoC: tegra: Fix reference count leaks.
media: pci: ttpci: av7110: fix possible buffer overflow caused by bad DMA value in debiirq()
scsi: target: tcmu: Fix crash on ARM during cmd completion
drm/amdkfd: Fix reference count leaks.
drm/radeon: fix multiple reference count leak
drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms
drm/amd/display: fix ref count leak in amdgpu_drm_ioctl
drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config
drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails
scsi: lpfc: Fix shost refcount mismatch when deleting vport
selftests/powerpc: Purge extra count_pmc() calls of ebb selftests
PCI: Fix pci_create_slot() reference count leak
rtlwifi: rtl8192cu: Prevent leaking urb
mips/vdso: Fix resource leaks in genvdso.c
drm/nouveau/drm/noveau: fix reference count leak in nouveau_fbcon_open
drm/nouveau: Fix reference count leak in nouveau_connector_detect
locking/lockdep: Fix overflow in presentation of average lock-time
scsi: iscsi: Do not put host in iscsi_set_flashnode_param()
ceph: fix potential mdsc use-after-free crash
scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del()
EDAC/ie31200: Fallback if host bridge device is already initialized
media: davinci: vpif_capture: fix potential double free
powerpc/spufs: add CONFIG_COREDUMP dependency
USB: sisusbvga: Fix a potential UB casued by left shifting a negative value
Revert "ath10k: fix DMA related firmware crashes on multiple devices"
i2c: rcar: in slave mode, clear NACK earlier
jbd2: make sure jh have b_transaction set in refile/unfile_buffer
jbd2: abort journal if free a async write error metadata buffer
s390/cio: add cond_resched() in the slow_eval_known_fn() loop
scsi: ufs: Fix possible infinite loop in ufshcd_hold
net: gianfar: Add of_node_put() before goto statement
fbcon: prevent user font height or width change from causing potential out-of-bounds access
USB: lvtest: return proper error code in probe
vt: defer kfree() of vc_screenbuf in vc_do_resize()
vt_ioctl: change VT_RESIZEX ioctl to check for error return from vc_resize()
serial: samsung: Removes the IRQ not found warning
serial: pl011: Don't leak amba_ports entry on driver register error
serial: 8250: change lock order in serial8250_do_startup()
writeback: Protect inode->i_io_list with inode->i_lock
writeback: Avoid skipping inode writeback
writeback: Fix sync livelock due to b_dirty_time processing
XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.
xhci: Do warm-reset when both CAS and XDEV_RESUME are set
PM: sleep: core: Fix the handling of pending runtime resume requests
device property: Fix the secondary firmware node handling in set_primary_fwnode()
USB: yurex: Fix bad gfp argument
usb: uas: Add quirk for PNY Pro Elite
USB: quirks: Add no-lpm quirk for another Raydium touchscreen
USB: Ignore UAS for JMicron JMS567 ATA/ATAPI Bridge
usb: host: ohci-exynos: Fix error handling in exynos_ohci_probe()
usb: storage: Add unusual_uas entry for Sony PSZ drives
btrfs: check the right error variable in btrfs_del_dir_entries_in_log
HID: hiddev: Fix slab-out-of-bounds write in hiddev_ioctl_usage()
ALSA: usb-audio: Update documentation comment for MS2109 quirk
Linux 4.4.235
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ic94d552561168bb9f44bc1350806425cbc35f743
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[ Upstream commit a7ef9b28aa8d72a1656fa6f0a01bbd1493886317 ]
Though the number of lock-acquisitions is tracked as unsigned long, this
is passed as the divisor to div_s64() which interprets it as a s32,
giving nonsense values with more than 2 billion acquisitons. E.g.
acquisitions holdtime-min holdtime-max holdtime-total holdtime-avg
-------------------------------------------------------------------------
2350439395 0.07 353.38 649647067.36 0.-32
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20200725185110.11588-1-chris@chris-wilson.co.uk
Signed-off-by: Sasha Levin <sashal@kernel.org>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-05900-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
59f04f292e871 ANDROID: fix a bug in quota2
Conflicts:
Makefile
fs/ext4/inode.c
fs/f2fs/dir.c
Change-Id: Ic71b44a02908cf633d96114f0ff745cf1e1186de
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Changes in 4.4.233
xfs: don't call xfs_da_shrink_inode with NULL bp
net: phy: mdio-bcm-unimac: fix potential NULL dereference in unimac_mdio_probe()
media: rc: prevent memory leak in cx23888_ir_probe
ath9k_htc: release allocated buffer if timed out
ath9k: release allocated buffer if timed out
nfs: Move call to security_inode_listsecurity into nfs_listxattr
PCI/ASPM: Disable ASPM on ASMedia ASM1083/1085 PCIe-to-PCI bridge
drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl()
drm: hold gem reference until object is no longer accessed
f2fs: check memory boundary by insane namelen
f2fs: check if file namelen exceeds max value
ARM: 8986/1: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins.
rds: Prevent kernel-infoleak in rds_notify_queue_get()
net/x25: Fix x25_neigh refcnt leak when x25 disconnect
net/x25: Fix null-ptr-deref in x25_disconnect
sh: Fix validation of system call number
net: lan78xx: add missing endpoint sanity check
net: lan78xx: fix transfer-buffer memory leak
mlxsw: core: Increase scope of RCU read-side critical section
mac80211: mesh: Free ie data when leaving mesh
nfc: s3fwrn5: add missing release on skb in s3fwrn5_recv_frame
net: ethernet: ravb: exit if re-initialization fails in tx timeout
Revert "i2c: cadence: Fix the hold bit setting"
xen-netfront: fix potential deadlock in xennet_remove()
x86/i8259: Use printk_deferred() to prevent deadlock
random32: update the net random state on interrupt and activity
ARM: percpu.h: fix build error
random: fix circular include dependency on arm64 after addition of percpu.h
random32: remove net_rand_state from the latent entropy gcc plugin
random32: move the pseudo-random 32-bit definitions to prandom.h
ext4: fix direct I/O read error
USB: serial: qcserial: add EM7305 QDL product ID
ALSA: seq: oss: Serialize ioctls
Bluetooth: Fix slab-out-of-bounds read in hci_extended_inquiry_result_evt()
Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt()
Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_with_rssi_evt()
vgacon: Fix for missing check in scrollback handling
mtd: properly check all write ioctls for permissions
net/9p: validate fds in p9_fd_open
drm/nouveau/fbcon: fix module unload when fbcon init has failed for some reason
cfg80211: check vendor command doit pointer before use
igb: reinit_locked() should be called with rtnl_lock
atm: fix atm_dev refcnt leaks in atmtcp_remove_persistent
tools lib traceevent: Fix memory leak in process_dynamic_array_len
binder: Prevent context manager from incrementing ref 0
ipv4: Silence suspicious RCU usage warning
ipv6: fix memory leaks on IPV6_ADDRFORM path
Revert "vxlan: fix tos value before xmit"
net: lan78xx: replace bogus endpoint lookup
usb: hso: check for return value in hso_serial_common_create()
vxlan: Ensure FDB dump is performed under RCU
Smack: fix use-after-free in smk_write_relabel_self()
tracepoint: Mark __tracepoint_string's __used
udp: drop corrupt packets earlier to avoid data corruption
gpio: fix oops resulting from calling of_get_named_gpio(NULL, ...)
EDAC: Fix reference count leaks
m68k: mac: Don't send IOP message until channel is idle
m68k: mac: Fix IOP status/control register writes
ARM: at91: pm: add missing put_device() call in at91_pm_sram_init()
ARM: socfpga: PM: add missing put_device() call in socfpga_setup_ocram_self_refresh()
drm/tilcdc: fix leak & null ref in panel_connector_get_modes
Bluetooth: add a mutex lock to avoid UAF in do_enale_set
fs/btrfs: Add cond_resched() for try_release_extent_mapping() stalls
drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync
video: fbdev: neofb: fix memory leak in neo_scan_monitor()
drm/nouveau: fix multiple instances of reference count leaks
drm/debugfs: fix plain echo to connector "force" attribute
mm/mmap.c: Add cond_resched() for exit_mmap() CPU stalls
brcmfmac: To fix Bss Info flag definition Bug
iwlegacy: Check the return value of pcie_capability_read_*()
usb: gadget: net2280: fix memory leak on probe error handling paths
bdc: Fix bug causing crash after multiple disconnects
dyndbg: fix a BUG_ON in ddebug_describe_flags
bcache: fix super block seq numbers comparision in register_cache_set()
ACPICA: Do not increment operation_region reference counts for field units
agp/intel: Fix a memory leak on module initialisation failure
video: fbdev: sm712fb: fix an issue about iounmap for a wrong address
console: newport_con: fix an issue about leak related system resources
iio: improve IIO_CONCENTRATION channel type description
leds: lm355x: avoid enum conversion warning
media: omap3isp: Add missed v4l2_ctrl_handler_free() for preview_init_entities()
scsi: cumana_2: Fix different dev_id between request_irq() and free_irq()
cxl: Fix kobject memleak
drm/radeon: fix array out-of-bounds read and write issues
scsi: powertec: Fix different dev_id between request_irq() and free_irq()
scsi: eesox: Fix different dev_id between request_irq() and free_irq()
media: firewire: Using uninitialized values in node_probe()
media: exynos4-is: Add missed check for pinctrl_lookup_state()
drm: panel: simple: Fix bpc for LG LB070WV8 panel
mwifiex: Prevent memory corruption handling keys
powerpc/vdso: Fix vdso cpu truncation
PCI/ASPM: Add missing newline in sysfs 'policy'
usb: dwc2: Fix error path in gadget registration
scsi: mesh: Fix panic after host or bus reset
Smack: fix another vsscanf out of bounds
Smack: prevent underflow in smk_set_cipso()
power: supply: check if calc_soc succeeded in pm860x_init_battery
s390/qeth: don't process empty bridge port events
wl1251: fix always return 0 error
net: spider_net: Fix the size used in a 'dma_free_coherent()' call
dlm: Fix kobject memleak
pinctrl-single: fix pcs_parse_pinconf() return value
drivers/net/wan/lapbether: Added needed_headroom and a skb->len check
net/nfc/rawsock.c: add CAP_NET_RAW check.
net: Set fput_needed iff FDPUT_FPUT is set
ALSA: usb-audio: Creative USB X-Fi Pro SB1095 volume knob support
ALSA: usb-audio: fix overeager device match for MacroSilicon MS2109
ALSA: usb-audio: add quirk for Pioneer DDJ-RB
crypto: qat - fix double free in qat_uclo_create_batch_init_list
fs/minix: check return value of sb_getblk()
fs/minix: don't allow getting deleted inodes
fs/minix: reject too-large maximum file size
ALSA: usb-audio: work around streaming quirk for MacroSilicon MS2109
9p: Fix memory leak in v9fs_mount
parisc: mask out enable and reserved bits from sba imask
ARM: 8992/1: Fix unwind_frame for clang-built kernels
xen/balloon: fix accounting in alloc_xenballooned_pages error path
xen/balloon: make the balloon wait interruptible
PCI: hotplug: ACPI: Fix context refcounting in acpiphp_grab_context()
btrfs: only search for left_info if there is no right_info in try_merge_free_space
btrfs: fix memory leaks after failure to lookup checksums during inode logging
powerpc: Fix circular dependency between percpu.h and mmu.h
net: ethernet: stmmac: Disable hardware multicast filter
net: stmmac: dwmac1000: provide multicast filter fallback
md/raid5: Fix Force reconstruct-write io stuck in degraded raid5
bcache: allocate meta data pages as compound pages
mac80211: fix misplaced while instead of if
MIPS: CPU#0 is not hotpluggable
ext2: fix missing percpu_counter_inc
ocfs2: change slot number type s16 to u16
kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler
pseries: Fix 64 bit logical memory block panic
USB: serial: ftdi_sio: make process-packet buffer unsigned
USB: serial: ftdi_sio: clean up receive processing
iommu/omap: Check for failure of a call to omap_iommu_dump_ctx
iommu/vt-d: Enforce PASID devTLB field mask
i2c: rcar: slave: only send STOP event when we have been addressed
clk: clk-atlas6: fix return value check in atlas6_clk_init()
Input: sentelic - fix error return when fsp_reg_write fails
drm/vmwgfx: Fix two list_for_each loop exit tests
nfs: Fix getxattr kernel panic and memory overflow
fs/ufs: avoid potential u32 multiplication overflow
mfd: dln2: Run event handler loop under spinlock
ALSA: echoaudio: Fix potential Oops in snd_echo_resume()
sh: landisk: Add missing initialization of sh_io_port_base
ipv6: check skb->protocol before lookup for nexthop
Linux 4.4.233
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iec7dcf69361bcc247996f3de2e20ba64ed0ce3a8
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commit 0cb2f1372baa60af8456388a574af6133edd7d80 upstream.
We found a case of kernel panic on our server. The stack trace is as
follows(omit some irrelevant information):
BUG: kernel NULL pointer dereference, address: 0000000000000080
RIP: 0010:kprobe_ftrace_handler+0x5e/0xe0
RSP: 0018:ffffb512c6550998 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8e9d16eea018 RCX: 0000000000000000
RDX: ffffffffbe1179c0 RSI: ffffffffc0535564 RDI: ffffffffc0534ec0
RBP: ffffffffc0534ec1 R08: ffff8e9d1bbb0f00 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8e9d1f797060 R14: 000000000000bacc R15: ffff8e9ce13eca00
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000080 CR3: 00000008453d0005 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
ftrace_ops_assist_func+0x56/0xe0
ftrace_call+0x5/0x34
tcpa_statistic_send+0x5/0x130 [ttcp_engine]
The tcpa_statistic_send is the function being kprobed. After analysis,
the root cause is that the fourth parameter regs of kprobe_ftrace_handler
is NULL. Why regs is NULL? We use the crash tool to analyze the kdump.
crash> dis tcpa_statistic_send -r
<tcpa_statistic_send>: callq 0xffffffffbd8018c0 <ftrace_caller>
The tcpa_statistic_send calls ftrace_caller instead of ftrace_regs_caller.
So it is reasonable that the fourth parameter regs of kprobe_ftrace_handler
is NULL. In theory, we should call the ftrace_regs_caller instead of the
ftrace_caller. After in-depth analysis, we found a reproducible path.
Writing a simple kernel module which starts a periodic timer. The
timer's handler is named 'kprobe_test_timer_handler'. The module
name is kprobe_test.ko.
1) insmod kprobe_test.ko
2) bpftrace -e 'kretprobe:kprobe_test_timer_handler {}'
3) echo 0 > /proc/sys/kernel/ftrace_enabled
4) rmmod kprobe_test
5) stop step 2) kprobe
6) insmod kprobe_test.ko
7) bpftrace -e 'kretprobe:kprobe_test_timer_handler {}'
We mark the kprobe as GONE but not disarm the kprobe in the step 4).
The step 5) also do not disarm the kprobe when unregister kprobe. So
we do not remove the ip from the filter. In this case, when the module
loads again in the step 6), we will replace the code to ftrace_caller
via the ftrace_module_enable(). When we register kprobe again, we will
not replace ftrace_caller to ftrace_regs_caller because the ftrace is
disabled in the step 3). So the step 7) will trigger kernel panic. Fix
this problem by disarming the kprobe when the module is going away.
Link: https://lkml.kernel.org/r/20200728064536.24405-1-songmuchun@bytedance.com
Cc: stable@vger.kernel.org
Fixes: ae6aa16fdc16 ("kprobes: introduce ftrace based optimization")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Co-developed-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f227e3ec3b5cad859ad15666874405e8c1bbc1d4 upstream.
This modifies the first 32 bits out of the 128 bits of a random CPU's
net_rand_state on interrupt or CPU activity to complicate remote
observations that could lead to guessing the network RNG's internal
state.
Note that depending on some network devices' interrupt rate moderation
or binding, this re-seeding might happen on every packet or even almost
never.
In addition, with NOHZ some CPUs might not even get timer interrupts,
leaving their local state rarely updated, while they are running
networked processes making use of the random state. For this reason, we
also perform this update in update_process_times() in order to at least
update the state when there is user or system activity, since it's the
only case we care about.
Reported-by: Amit Klein <aksecurity@gmail.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.232
pinctrl: amd: fix npins for uart0 in kerncz_groups
mac80211: allow rx of mesh eapol frames with default rx key
scsi: scsi_transport_spi: Fix function pointer check
xtensa: fix __sync_fetch_and_{and,or}_4 declarations
xtensa: update *pos in cpuinfo_op.next
drivers/net/wan/lapbether: Fixed the value of hard_header_len
net: sky2: initialize return of gm_phy_read
drm/nouveau/i2c/g94-: increase NV_PMGR_DP_AUXCTL_TRANSACTREQ timeout
SUNRPC reverting d03727b248d0 ("NFSv4 fix CLOSE not waiting for direct IO compeletion")
perf/core: Fix locking for children siblings group read
uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix GDB regression
ALSA: info: Drop WARN_ON() from buffer NULL sanity check
ASoC: rt5670: Correct RT5670_LDO_SEL_MASK
btrfs: fix double free on ulist after backref resolution failure
x86/fpu: Disable bottom halves while loading FPU registers
btrfs: fix mount failure caused by race with umount
hippi: Fix a size used in a 'pci_free_consistent()' in an error handling path
ax88172a: fix ax88172a_unbind() failures
net: dp83640: fix SIOCSHWTSTAMP to update the struct with actual configuration
net: smc91x: Fix possible memory leak in smc_drv_probe()
scripts/decode_stacktrace: strip basepath from all paths
regmap: dev_get_regmap_match(): fix string comparison
usb: gadget: udc: gr_udc: fix memleak on error handling path in gr_ep_init()
arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP
x86: math-emu: Fix up 'cmp' insn for clang ias
Revert "cifs: Fix the target file was deleted when rename failed."
staging: wlan-ng: properly check endpoint types
staging: comedi: addi_apci_1032: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: ni_6527: fix INSN_CONFIG_DIGITAL_TRIG support
staging: comedi: addi_apci_1500: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: addi_apci_1564: check INSN_CONFIG_DIGITAL_TRIG shift
serial: 8250: fix null-ptr-deref in serial8250_start_tx()
serial: 8250_mtk: Fix high-speed baud rates clamping
mm/memcg: fix refcount error while moving and swapping
parisc: Add atomic64_set_release() define to avoid CPU soft lockups
ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb
ath9k: Fix regression with Atheros 9271
AX.25: Fix out-of-bounds read in ax25_connect()
AX.25: Prevent out-of-bounds read in ax25_sendmsg()
net-sysfs: add a newline when printing 'tx_timeout' by sysfs
net: udp: Fix wrong clean up for IS_UDPLITE macro
AX.25: Prevent integer overflows in connect and sendmsg
tcp: allow at most one TLP probe per flight
rxrpc: Fix sendmsg() returning EPIPE due to recvmsg() returning ENODATA
ip6_gre: fix null-ptr-deref in ip6gre_init_net()
drivers/net/wan/x25_asy: Fix to make it work
Makefile: Fix GCC_TOOLCHAIN_DIR prefix for Clang cross compilation
regmap: debugfs: check count when read regmap file
xfs: set format back to extents if xfs_bmap_extents_to_btree
tools/lib/subcmd/pager.c: do not alias select() params
perf: Make perf able to build with latest libbfd
perf tools: Fix snprint warnings for gcc 8
perf annotate: Use asprintf when formatting objdump command line
perf probe: Fix to check blacklist address correctly
Linux 4.4.232
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Id3f07fa9b926d859582a8f3aa50c7e4c0c847a77
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GDB regression
commit fe5ed7ab99c656bd2f5b79b49df0e9ebf2cead8a upstream.
If a tracee is uprobed and it hits int3 inserted by debugger, handle_swbp()
does send_sig(SIGTRAP, current, 0) which means si_code == SI_USER. This used
to work when this code was written, but then GDB started to validate si_code
and now it simply can't use breakpoints if the tracee has an active uprobe:
# cat test.c
void unused_func(void)
{
}
int main(void)
{
return 0;
}
# gcc -g test.c -o test
# perf probe -x ./test -a unused_func
# perf record -e probe_test:unused_func gdb ./test -ex run
GNU gdb (GDB) 10.0.50.20200714-git
...
Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff7ddf909 in dl_main () from /lib64/ld-linux-x86-64.so.2
(gdb)
The tracee hits the internal breakpoint inserted by GDB to monitor shared
library events but GDB misinterprets this SIGTRAP and reports a signal.
Change handle_swbp() to use force_sig(SIGTRAP), this matches do_int3_user()
and fixes the problem.
This is the minimal fix for -stable, arch/x86/kernel/uprobes.c is equally
wrong; it should use send_sigtrap(TRAP_TRACE) instead of send_sig(SIGTRAP),
but this doesn't confuse GDB and needs another x86-specific patch.
Reported-by: Aaron Merey <amerey@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200723154420.GA32043@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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