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: 24850 Comm: kworker/u4:8 Not tainted 4.14.117 #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: tipc_send tipc_send_work
task: ffff88806f654400 task.stack: ffff888083700000
RIP: 0010:__lock_acquire+0x1ba/0x45e0 kernel/locking/lockdep.c:3365
RSP: 0018:ffff888083707830 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000004741 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8880837079e0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88806f654400 R12: 0000000000023a08
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000021000000 CR3: 0000000095796000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3991
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:160
 lock_timer_base+0x5a/0x190 kernel/time/timer.c:921
 del_timer kernel/time/timer.c:1153 [inline]
 del_timer+0x96/0xf0 kernel/time/timer.c:1144
 tipc_subscrb_subscrp_delete+0x16a/0x3a0 net/tipc/subscr.c:207
 tipc_subscrb_delete net/tipc/subscr.c:238 [inline]
 tipc_subscrb_release_cb+0x18/0x30 net/tipc/subscr.c:316
 tipc_close_conn+0x179/0x210 net/tipc/server.c:203
 tipc_send_to_sock net/tipc/server.c:538 [inline]
 tipc_send_work+0x470/0x5a0 net/tipc/server.c:564
 process_one_work+0x868/0x1610 kernel/workqueue.c:2114
 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
 kthread+0x31c/0x430 kernel/kthread.c:232
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
Code: 00 c7 40 18 00 00 00 00 48 8d 65 d8 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 50 2e 00 00 49 81 3c 24 e0 00 5d 88 0f 84 43 
RIP: __lock_acquire+0x1ba/0x45e0 kernel/locking/lockdep.c:3365 RSP: ffff888083707830
---[ end trace b257736a93c4fe13 ]---