syzbot


INFO: trying to register non-static key in do_send_sig_info

Status: auto-closed as invalid on 2020/09/30 03:13
Reported-by: syzbot+89333d2445f4c5a4af7a@syzkaller.appspotmail.com
First crash: 752d, last: 752d

Sample crash report:
overlayfs: failed to resolve './file1': -2
overlayfs: failed to resolve './file1': -2
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 1 PID: 3644 Comm: systemd-udevd Not tainted 4.14.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 register_lock_class+0x32b/0x1320 kernel/locking/lockdep.c:768
 __lock_acquire+0x180/0x42a0 kernel/locking/lockdep.c:3378
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152
 spin_lock include/linux/spinlock.h:317 [inline]
 __lock_task_sighand+0x152/0x670 kernel/signal.c:1319
 lock_task_sighand include/linux/sched/signal.h:598 [inline]
 do_send_sig_info+0x6a/0x100 kernel/signal.c:1217
 group_send_sig_info+0xe6/0x170 kernel/signal.c:1344
 kill_pid_info+0x97/0x180 kernel/signal.c:1378
 kill_something_info kernel/signal.c:1461 [inline]
 SYSC_kill kernel/signal.c:3052 [inline]
 SyS_kill+0x3f4/0x560 kernel/signal.c:3042
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f796bc8b317
RSP: 002b:00007ffc7b94f0a8 EFLAGS: 00000297 ORIG_RAX: 000000000000003e
RAX: ffffffffffffffda RBX: 000055e407941a60 RCX: 00007f796bc8b317
RDX: 000055e4079f1ab0 RSI: 000000000000000f RDI: 00000000000065d3
RBP: 00007ffc7b94f0c0 R08: 0000000000000000 R09: 000055e407a0e3e0
R10: 000000000000000f R11: 0000000000000297 R12: 00007ffc7b94f0b8
R13: 000055e407a05740 R14: 000055e407a05720 R15: 0000000000000001
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 3644 Comm: systemd-udevd Not tainted 4.14.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88808e90a140 task.stack: ffff88808e910000
RIP: 0010:__wake_up_common+0x9e/0x5d0 kernel/sched/wait.c:90
RSP: 0018:ffff88808e917b78 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff88800017d300 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000003 RDI: 0000000000000000
RBP: 0000000000000003 R08: ffffffffffffffe8 R09: ffff88808e917c18
R10: ffffed1013ee97ac R11: ffff88808e90a140 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f796cec08c0(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f796cca9028 CR3: 000000008fbbd000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __wake_up_common_lock+0xba/0x140 kernel/sched/wait.c:125
 signalfd_notify include/linux/signalfd.h:22 [inline]
 __send_signal+0x104a/0x1280 kernel/signal.c:1145
 do_send_sig_info+0x86/0x100 kernel/signal.c:1218
 group_send_sig_info+0xe6/0x170 kernel/signal.c:1344
 kill_pid_info+0x97/0x180 kernel/signal.c:1378
 kill_something_info kernel/signal.c:1461 [inline]
 SYSC_kill kernel/signal.c:3052 [inline]
 SyS_kill+0x3f4/0x560 kernel/signal.c:3042
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f796bc8b317
RSP: 002b:00007ffc7b94f0a8 EFLAGS: 00000297 ORIG_RAX: 000000000000003e
RAX: ffffffffffffffda RBX: 000055e407941a60 RCX: 00007f796bc8b317
RDX: 000055e4079f1ab0 RSI: 000000000000000f RDI: 00000000000065d3
RBP: 00007ffc7b94f0c0 R08: 0000000000000000 R09: 000055e407a0e3e0
R10: 000000000000000f R11: 0000000000000297 R12: 00007ffc7b94f0b8
R13: 000055e407a05740 R14: 000055e407a05720 R15: 0000000000000001
Code: bc 04 00 00 4c 8b 43 38 49 83 e8 18 49 8d 78 18 48 39 3c 24 0f 84 6a 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 a1 04 00 00 49 8b 40 18 89 54 24 10 31 db 48 
RIP: __wake_up_common+0x9e/0x5d0 kernel/sched/wait.c:90 RSP: ffff88808e917b78
---[ end trace 65b6f86b7b98026a ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/06/02 03:12 linux-4.14.y 4f68020fef1c a0331e89 .config log report