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: 7262 Comm: kworker/u4:0 Not tainted 4.9.133+ #106
Workqueue: netns cleanup_net
task: ffff8801cf200000 task.stack: ffff8801ccf98000
RIP: 0010:[<ffffffff81125ac6>]  [<ffffffff81125ac6>] get_work_pool+0xf6/0x1d0 kernel/workqueue.c:716
RSP: 0018:ffff8801ccf9f8f8  EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffffed0039e40115
RDX: 00000003ffffffc0 RSI: ffffffff81125aae RDI: 0000000000000046
RBP: ffff8801ccf9f910 R08: ffff8801cf2008b0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8801b381c470
R13: ffff8801b381b280 R14: ffff8801b381c490 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0df9ac5fc0 CR3: 000000017da3c000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 dffffc0000000000 ffff8801b381c470 ffff8801b381b280 ffff8801ccf9fa50
 ffffffff8112c62c ffffffff8112c550 ffff8801ccf9f948 1ffff100399f3f29
 ffff8801d50f1890 0000000000000003 0000000041b58ab3 ffffffff82e2a5a4
Call Trace:
 [<ffffffff8112c62c>] start_flush_work kernel/workqueue.c:2785 [inline]
 [<ffffffff8112c62c>] flush_work+0xdc/0x6c0 kernel/workqueue.c:2845
 [<ffffffff8262702c>] xfrm_policy_fini+0x2c/0x2f0 net/xfrm/xfrm_policy.c:3004
 [<ffffffff82627315>] xfrm_net_exit+0x25/0x30 net/xfrm/xfrm_policy.c:3071
 [<ffffffff822d1a80>] ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:136
 [<ffffffff822d47e2>] cleanup_net+0x3f2/0x8b0 net/core/net_namespace.c:473
 [<ffffffff81130d61>] process_one_work+0x831/0x1530 kernel/workqueue.c:2092
 [<ffffffff81131b36>] worker_thread+0xd6/0x1140 kernel/workqueue.c:2226
 [<ffffffff811428dd>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82803edc>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Code: e1 59 1f 00 48 89 d8 5b 41 5c 41 5d 5d c3 e8 d2 59 1f 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 bc 00 00 00 48 8b 1b e8 a8 59 1f 00 48 89 d8 
RIP  [<ffffffff81125ac6>] get_work_pool+0xf6/0x1d0 kernel/workqueue.c:716
 RSP <ffff8801ccf9f8f8>
---[ end trace 0aa7f28721502bb3 ]---