syzbot


WARNING in timer_wait_running
Status: upstream: reported C repro on 2020/08/31 17:07
Reported-by: syzbot+3b14b2ed9b3d06dcaa07@syzkaller.appspotmail.com
First crash: 634d, last: 87d

Cause bisection: introduced by (bisect log) :
commit b1012ca8dc4f9b1a1fe8e2cb1590dd6d43ea3849
Author: Lu Baolu <baolu.lu@linux.intel.com>
Date: Thu Jul 23 01:34:37 2020 +0000

  iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu

Crash: WARNING in timer_wait_running (log)
Repro: C syz .config

Fix bisection: the fix commit could be any of (bisect log):
  1e43c377a79f Merge tag 'xtensa-20210329' of git://github.com/jcmvbkbc/linux-xtensa
  50be9417e23a Merge tag 'io_uring-5.14-2021-07-09' of git://git.kernel.dk/linux-block
Patch testing requests:
Created Duration User Patch Repo Result
2020/09/13 20:55 16m anmol.karan123@gmail.com patch upstream OK

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 26914 at kernel/time/posix-timers.c:849 timer_wait_running+0x218/0x250 kernel/time/posix-timers.c:849
Modules linked in:
CPU: 1 PID: 26914 Comm: syz-executor195 Not tainted 5.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:timer_wait_running+0x218/0x250 kernel/time/posix-timers.c:849
Code: 00 48 c7 c2 20 c2 6d 89 be 91 02 00 00 48 c7 c7 80 c2 6d 89 c6 05 a5 fc 4a 0c 01 e8 e1 72 5c 07 e9 b1 fe ff ff e8 a8 36 0e 00 <0f> 0b e9 08 ff ff ff e8 dc e0 51 00 e9 3b fe ff ff 4c 89 e7 e8 df
RSP: 0018:ffffc900019afd58 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880255154c0 RSI: ffffffff8165baa8 RDI: ffffffff896dced8
RBP: ffff88802795cbc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8179e0a8 R11: 000000000000002b R12: ffffc900019afdb8
R13: 0000000000000000 R14: ffffffff896dce60 R15: ffffc900019afdb8
FS:  00007fe5d4d0d700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004b3705 CR3: 000000002d166000 CR4: 0000000000350ee0
Call Trace:
 do_timer_settime.part.0+0x119/0x1d0 kernel/time/posix-timers.c:929
 do_timer_settime kernel/time/posix-timers.c:938 [inline]
 __do_sys_timer_settime kernel/time/posix-timers.c:952 [inline]
 __se_sys_timer_settime kernel/time/posix-timers.c:938 [inline]
 __x64_sys_timer_settime+0x219/0x310 kernel/time/posix-timers.c:938
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x450cf9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe5d4d0d208 EFLAGS: 00000246 ORIG_RAX: 00000000000000df
RAX: ffffffffffffffda RBX: 00000000004d5298 RCX: 0000000000450cf9
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000004d5290 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004d529c
R13: 00007ffeb8845c7f R14: 00007fe5d4d0d300 R15: 0000000000022000

Crashes (19):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/03/30 08:37 upstream 1e43c377a79f 6a81331a .config log report syz C WARNING in timer_wait_running
ci-upstream-kasan-gce-smack-root 2020/08/31 11:51 upstream dcc5c6f013d8 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce 2020/08/31 09:04 upstream dcc5c6f013d8 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce-386 2020/08/30 07:16 upstream 1127b219ce94 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/08/31 16:15 upstream dcc5c6f013d8 d5a3ae1f .config log report syz
ci-upstream-linux-next-kasan-gce-root 2020/09/01 06:09 linux-next b36c969764ab d5a3ae1f .config log report syz
ci-upstream-kasan-gce 2022/02/28 23:41 upstream 7e57714cd0ad 45a13a73 .config log report info WARNING in timer_wait_running
ci-upstream-kasan-gce 2022/01/22 06:12 upstream 9b57f4589857 214351e1 .config log report info WARNING in timer_wait_running
ci-upstream-kasan-gce-smack-root 2022/01/05 10:25 upstream c9e6606c7fe9 0a2584dd .config log report info WARNING in timer_wait_running
ci-upstream-kasan-gce 2021/12/24 14:12 upstream 7a29b11da965 6caa12e4 .config log report info WARNING in timer_wait_running
ci-upstream-kasan-gce-smack-root 2021/12/02 12:22 upstream 58e1100fdc59 61f86278 .config log report info WARNING in timer_wait_running
ci-upstream-kasan-gce-root 2021/08/30 08:18 upstream 90ac80dcd313 be2c130d .config log report info WARNING in timer_wait_running
ci-upstream-kasan-gce-386 2021/05/10 21:55 upstream 0aa099a312b6 ca873091 .config log report info WARNING in timer_wait_running
ci-upstream-linux-next-kasan-gce-root 2021/11/05 04:29 linux-next b477ae38e815 4c1be0be .config log report info WARNING in timer_wait_running
ci-upstream-kasan-gce 2020/09/10 13:54 upstream 34d4ddd359db 409809d8 .config log report
ci-upstream-kasan-gce-386 2020/12/21 14:09 upstream e37b12e4bb21 04201c06 .config log report info
ci-upstream-kasan-gce-386 2020/10/03 19:43 upstream d3d45f8220d6 2653fa43 .config log report info
ci-upstream-kasan-gce-386 2020/08/30 05:14 upstream 1127b219ce94 d5a3ae1f .config log report
ci-upstream-linux-next-kasan-gce-root 2020/09/17 20:20 linux-next 860461e4fcaa 8247808b .config log report info