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: 0 PID: 7093 Comm: kworker/u4:5 Not tainted 4.14.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: tipc_send tipc_send_work
task: ffff888202544240 task.stack: ffff888204030000
RIP: 0010:perf_trace_lock_acquire+0xb2/0x4b0 include/trace/events/lock.h:13
RSP: 0018:ffff888204037998 EFLAGS: 00010007
RAX: dffffc0000000000 RBX: ffff88808f316028 RCX: 0000000000000000
RDX: 0cccac8dcc2d53a9 RSI: 6665646e616a9d37 RDI: ffffffff87d6e7a0
RBP: ffff888204037a58 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff87d6e720
R13: 6665646e616a9d37 R14: ffff888204037a30 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f3645b3920 CR3: 000000005a8be000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x2b8/0x3f0 kernel/locking/lockdep.c:3997
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x8c/0xbf kernel/locking/spinlock.c:160
 lock_timer_base+0x58/0x190 kernel/time/timer.c:921
 del_timer kernel/time/timer.c:1153 [inline]
 del_timer+0x8b/0xe0 kernel/time/timer.c:1144
 tipc_subscrb_subscrp_delete+0x15b/0x380 net/tipc/subscr.c:207
 tipc_subscrb_delete net/tipc/subscr.c:238 [inline]
 tipc_subscrb_release_cb+0x13/0x40 net/tipc/subscr.c:316
 tipc_close_conn+0x169/0x210 net/tipc/server.c:203
 tipc_send_to_sock net/tipc/server.c:538 [inline]
 tipc_send_work+0x434/0x540 net/tipc/server.c:564
 process_one_work+0x813/0x1540 kernel/workqueue.c:2116
 worker_thread+0x5d1/0x1070 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 00 0f 85 37 03 00 00 49 8d 45 18 4d 8b bc 24 80 00 00 00 48 89 c2 48 89 85 58 ff ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 1d 03 00 00 49 8b 7d 18 48 85 ff 0f 84 c3 02 
RIP: perf_trace_lock_acquire+0xb2/0x4b0 include/trace/events/lock.h:13 RSP: ffff888204037998
---[ end trace 567afa533865325c ]---