syzbot


WARNING in __cleanup_sighand
Status: closed as dup on 2022/01/20 06:43
Reported-by: syzbot+985a662ba46639a7897f@syzkaller.appspotmail.com
First crash: 135d, last: 127d
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
WARNING in signalfd_cleanup C done 201 127d 143d

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3600 at kernel/sched/wait.c:245 __wake_up_pollfree+0x1c7/0x1d0 kernel/sched/wait.c:246
Modules linked in:
CPU: 1 PID: 3600 Comm: syz-executor582 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__wake_up_pollfree+0x1c7/0x1d0 kernel/sched/wait.c:245
Code: 0d 00 00 c6 44 08 0f 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 a0 00 00 00 75 13 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b eb a7 e8 f0 89 b1 08 55 41 57 41 56 41 55 41 54 53 48 83 ec
RSP: 0018:ffffc90001aaf760 EFLAGS: 00010016
RAX: ffff8880787693f0 RBX: 0000000000000046 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffc90001aaf848 R08: dffffc0000000000 R09: ffffed10046325d2
R10: ffffed10046325d2 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90001aaf7a0 R14: 1ffff92000355ef4 R15: ffff888023192ec8
FS:  000055555695d300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200000c0 CR3: 000000002374c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __cleanup_sighand+0x48/0xa0 kernel/fork.c:1588
 __exit_signal kernel/exit.c:159 [inline]
 release_task+0x115f/0x15d0 kernel/exit.c:200
 wait_task_zombie kernel/exit.c:1121 [inline]
 wait_consider_task+0x1995/0x3020 kernel/exit.c:1348
 do_wait_thread kernel/exit.c:1411 [inline]
 do_wait+0x291/0x9d0 kernel/exit.c:1528
 kernel_wait4+0x2a3/0x3c0 kernel/exit.c:1691
 __do_sys_wait4 kernel/exit.c:1719 [inline]
 __se_sys_wait4 kernel/exit.c:1715 [inline]
 __x64_sys_wait4+0x130/0x1e0 kernel/exit.c:1715
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb66a5bb386
Code: 0f 1f 40 00 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 49 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 90 48 83 ec 28 89 54 24 14 48 89 74 24
RSP: 002b:00007ffe9339ed58 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 000000000000ce97 RCX: 00007fb66a5bb386
RDX: 0000000040000001 RSI: 00007ffe9339ed74 RDI: 00000000ffffffff
RBP: 0000000000001284 R08: 00007ffe933e2080 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 431bde82d7b634db
R13: 00007ffe9339ed74 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (27):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2022/01/20 06:36 upstream 1d1df41c5a33 5da9499f .config log report syz C WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/21 07:00 upstream 2c271fe77d52 ab3d9f17 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/21 03:48 upstream 2c271fe77d52 ab3d9f17 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/20 12:28 upstream fa2e1ba3e9e3 5da9499f .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/20 06:01 upstream 1d1df41c5a33 5da9499f .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/19 17:37 upstream e9f5cbc0c851 0620189b .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/19 17:27 upstream e9f5cbc0c851 0620189b .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/19 11:45 upstream e9f5cbc0c851 0620189b .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/17 19:27 upstream 0c947b893d69 731a2d23 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/17 10:43 upstream 0c947b893d69 731a2d23 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/17 09:05 upstream 79e06c4c4950 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/17 09:00 upstream 79e06c4c4950 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/17 08:12 upstream 79e06c4c4950 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/17 07:24 upstream 79e06c4c4950 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/16 21:49 upstream 79e06c4c4950 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/16 11:49 upstream d0a231f01e5b 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/16 09:00 upstream d0a231f01e5b 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/15 17:05 upstream a33f5c380c4b 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/15 06:40 upstream 112450df61b7 723cfaf0 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/14 15:14 upstream fb3b0673b7d5 53e00b45 .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/14 09:17 upstream fb3b0673b7d5 b8d780ab .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/14 06:05 upstream 455e73a07f6e b8d780ab .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/14 02:59 upstream 455e73a07f6e b8d780ab .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/14 01:40 upstream 455e73a07f6e b8d780ab .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/14 01:23 upstream 455e73a07f6e b8d780ab .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/13 02:15 upstream f079ab01b560 44d1319a .config log report info WARNING in __cleanup_sighand
ci-upstream-kasan-gce-smack-root 2022/01/12 23:56 upstream f079ab01b560 44d1319a .config log report info WARNING in __cleanup_sighand