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 NOPTI
Modules linked in:
CPU: 0 PID: 363 Comm: kworker/u4:2 Not tainted 4.14.91+ #3
Workqueue: netns cleanup_net
task: ffff8881cc9faf00 task.stack: ffff8881ccec8000
RIP: 0010:get_work_pool+0x9f/0x140 kernel/workqueue.c:718
RSP: 0018:ffff8881ccecfa28 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: 0000000000000000
RDX: 00000003ffffffc0 RSI: 00000000ffffffff RDI: 0000000000000046
RBP: ffff8881ccecfba0 R08: 0000000000000001 R09: 0000000000000003
R10: ffff8881cc9fb7a8 R11: 0000000000000001 R12: ffff8881a0dd1850
R13: 1ffff110399d9f4b R14: dffffc0000000000 R15: ffff8881a0dd1830
FS:  0000000000000000(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe9694fd3c CR3: 000000018b426002 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 start_flush_work kernel/workqueue.c:2819 [inline]
 flush_work+0xff/0x710 kernel/workqueue.c:2884
 xfrm_policy_fini+0x29/0x260 net/xfrm/xfrm_policy.c:3005
 xfrm_net_exit+0x19/0x30 net/xfrm/xfrm_policy.c:3066
 ops_exit_list.isra.0+0xa8/0x150 net/core/net_namespace.c:142
 cleanup_net+0x3ce/0x860 net/core/net_namespace.c:483
 process_one_work+0x7c6/0x14e0 kernel/workqueue.c:2114
 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2248
 kthread+0x310/0x420 kernel/kthread.c:232
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402
Code: 89 c4 e8 c5 53 1e 00 4c 89 e0 5b 41 5c c3 e8 b9 53 1e 00 48 81 e3 00 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 84 00 00 00 4c 8b 23 e8 8f 53 1e 00 5b 4c 89 
RIP: get_work_pool+0x9f/0x140 kernel/workqueue.c:718 RSP: ffff8881ccecfa28
---[ end trace 27734ccbfd240106 ]---