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: 892d, last: 15d

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
Last 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: 1 PID: 6456 at kernel/time/posix-timers.c:849 timer_wait_running+0x220/0x260 kernel/time/posix-timers.c:849
Modules linked in:
CPU: 0 PID: 6456 Comm: syz-executor284 Not tainted 6.2.0-rc1-syzkaller-00043-g2258c2dc850b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:timer_wait_running+0x220/0x260 kernel/time/posix-timers.c:849
Code: 00 48 c7 c2 60 f5 4e 8a be fd 02 00 00 48 c7 c7 c0 f5 4e 8a c6 05 e3 78 ea 0c 01 e8 67 88 4c 08 e9 90 fe ff ff e8 70 46 0e 00 <0f> 0b e9 e7 fe ff ff e8 f4 4d 5c 00 e9 33 fe ff ff e8 0a 4e 5c 00
RSP: 0018:ffffc9000307fd50 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880766d57c0 RSI: ffffffff81730bd0 RDI: ffffffff8a4f0218
RBP: ffff88801d3d6178 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed1003a7ac33 R11: 0000000000000021 R12: ffffc9000307fdb0
R13: 0000000000000000 R14: ffffffff8a4f01a0 R15: ffffc9000307fdb0
FS:  00007fbc35c0e700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc35cc77d0 CR3: 000000002915c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 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+0x21d/0x310 kernel/time/posix-timers.c:938
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbc35c804d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 16 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbc35c0e318 EFLAGS: 00000246 ORIG_RAX: 00000000000000df
RAX: ffffffffffffffda RBX: 00007fbc35d0f278 RCX: 00007fbc35c804d9
RDX: 0000000020002100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 00007fbc35d0f270 R08: 00007fbc35c0e700 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbc35d0f27c
R13: 00007ffed3516bef R14: 00007fbc35c0e400 R15: 0000000000022000
 </TASK>

Crashes (27):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-kasan-gce-root 2022/12/30 06:05 upstream 2258c2dc850b 44712fbc .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in timer_wait_running
ci-upstream-kasan-gce-selinux-root 2022/12/13 00:00 upstream 830b3c68c1fb 67be1ae7 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in timer_wait_running
ci-upstream-kasan-gce 2022/12/03 23:49 upstream 97ee9d1c1696 e080de16 .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in timer_wait_running
ci-upstream-kasan-gce-root 2022/08/26 02:03 upstream 3f5c20055a64 9b5bf4cd .config strace log report syz C WARNING in timer_wait_running
ci-upstream-kasan-gce-root 2021/03/30 08:37 upstream 1e43c377a79f 6a81331a .config console log report syz C WARNING in timer_wait_running
ci-upstream-linux-next-kasan-gce-root 2023/01/24 02:48 linux-next 691781f561e9 9dfcf09c .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in timer_wait_running
ci-upstream-linux-next-kasan-gce-root 2022/10/09 07:36 linux-next aaa11ce2ffc8 aea5da89 .config console log report syz C [disk image] [vmlinux] WARNING in timer_wait_running
ci-upstream-gce-arm64 2022/12/03 21:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e3cb714fb489 e080de16 .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in timer_wait_running
ci-upstream-kasan-gce-smack-root 2020/08/31 11:51 upstream dcc5c6f013d8 d5a3ae1f .config console log report syz C
ci-upstream-kasan-gce 2020/08/31 09:04 upstream dcc5c6f013d8 d5a3ae1f .config console log report syz C
ci-upstream-kasan-gce-386 2020/08/30 07:16 upstream 1127b219ce94 d5a3ae1f .config console log report syz C
ci-upstream-kasan-gce 2022/08/19 23:26 upstream 4c2d0b039c5c 26a13b38 .config console log report syz WARNING in timer_wait_running
ci-upstream-kasan-gce-selinux-root 2020/08/31 16:15 upstream dcc5c6f013d8 d5a3ae1f .config console log report syz
ci-upstream-linux-next-kasan-gce-root 2020/09/01 06:09 linux-next b36c969764ab d5a3ae1f .config console log report syz
ci-upstream-kasan-gce 2022/02/28 23:41 upstream 7e57714cd0ad 45a13a73 .config console log report info WARNING in timer_wait_running
ci-upstream-kasan-gce 2022/01/22 06:12 upstream 9b57f4589857 214351e1 .config console log report info WARNING in timer_wait_running
ci-upstream-kasan-gce-smack-root 2022/01/05 10:25 upstream c9e6606c7fe9 0a2584dd .config console log report info WARNING in timer_wait_running
ci-upstream-kasan-gce 2021/12/24 14:12 upstream 7a29b11da965 6caa12e4 .config console log report info WARNING in timer_wait_running
ci-upstream-kasan-gce-smack-root 2021/12/02 12:22 upstream 58e1100fdc59 61f86278 .config console log report info WARNING in timer_wait_running
ci-upstream-kasan-gce-root 2021/08/30 08:18 upstream 90ac80dcd313 be2c130d .config console log report info WARNING in timer_wait_running
ci-upstream-kasan-gce-386 2021/05/10 21:55 upstream 0aa099a312b6 ca873091 .config console 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 console log report info WARNING in timer_wait_running
ci-upstream-kasan-gce 2020/09/10 13:54 upstream 34d4ddd359db 409809d8 .config console log report
ci-upstream-kasan-gce-386 2020/12/21 14:09 upstream e37b12e4bb21 04201c06 .config console log report info
ci-upstream-kasan-gce-386 2020/10/03 19:43 upstream d3d45f8220d6 2653fa43 .config console log report info
ci-upstream-kasan-gce-386 2020/08/30 05:14 upstream 1127b219ce94 d5a3ae1f .config console log report
ci-upstream-linux-next-kasan-gce-root 2020/09/17 20:20 linux-next 860461e4fcaa 8247808b .config console log report info
* Struck through repros no longer work on HEAD.