syzbot


general protection fault in lock_timer_base (2)

Status: auto-closed as invalid on 2021/01/05 13:46
Reported-by: syzbot+21619987710088337852@syzkaller.appspotmail.com
First crash: 834d, last: 668d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 general protection fault in lock_timer_base (3) 2 491d 508d 0/1 auto-closed as invalid on 2021/06/30 20:28
linux-4.14 general protection fault in lock_timer_base (4) 2 62d 69d 0/1 upstream: reported on 2022/04/29 15:08
linux-4.14 general protection fault in lock_timer_base 2 1156d 1177d 0/1 auto-closed as invalid on 2019/10/25 08:49

Sample crash report:
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: 5 Comm: kworker/u4:0 Not tainted 4.14.196-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: tipc_send tipc_send_work
task: ffff8880a9832140 task.stack: ffff8880a9838000
RIP: 0010:__lock_acquire+0x1cc/0x3f20 kernel/locking/lockdep.c:3369
RSP: 0018:ffff8880a983f8a0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0406e62406c76d62 RSI: 0000000000000000 RDI: 20373120363b6b11
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: ffff8880a9832140 R12: 20373120363b6b11
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8a5a5c00
FS:  0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32226000 CR3: 00000000a96b3000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160
 lock_timer_base+0x58/0x190 kernel/time/timer.c:922
 del_timer kernel/time/timer.c:1154 [inline]
 del_timer+0x8b/0xe0 kernel/time/timer.c:1145
 tipc_subscrb_subscrp_delete+0x13a/0x330 net/tipc/subscr.c:207
 tipc_subscrb_delete net/tipc/subscr.c:238 [inline]
 tipc_subscrb_release_cb+0x13/0x20 net/tipc/subscr.c:316
 tipc_close_conn+0x16a/0x200 net/tipc/server.c:203
 tipc_send_to_sock net/tipc/server.c:538 [inline]
 tipc_send_work+0x41e/0x520 net/tipc/server.c:564
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 18 00 00 00 00 48 81 c4 80 01 00 00 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 67 2a 00 00 49 81 3c 24 60 16 9d 89 0f 84 5f 
RIP: __lock_acquire+0x1cc/0x3f20 kernel/locking/lockdep.c:3369 RSP: ffff8880a983f8a0
---[ end trace 1a505a704a573fb6 ]---

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/09/07 13:46 linux-4.14.y 2f166cdcf8a9 abf9ba4f .config log report
ci2-linux-4-14 2020/07/29 01:17 linux-4.14.y 69b94dd6dcd1 cb93dc6a .config log report
ci2-linux-4-14 2020/06/09 13:17 linux-4.14.y c6db52a88798 092934c1 .config log report
ci2-linux-4-14 2020/05/05 04:15 linux-4.14.y 773e2b1cd56a 9941337c .config log report
ci2-linux-4-14 2020/04/30 06:12 linux-4.14.y 050272a0423e 2dd552a5 .config log report
ci2-linux-4-14 2020/04/29 21:08 linux-4.14.y 050272a0423e ba2806db .config log report
ci2-linux-4-14 2020/04/20 19:49 linux-4.14.y c10b57a567e4 347a5dc3 .config log report
ci2-linux-4-14 2020/03/25 12:36 linux-4.14.y 01364dad1d45 41f049cc .config log report