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: 2145 Comm: kworker/u4:6 Not tainted 4.9.148+ #1
Workqueue: netns cleanup_net
task: ffff8801cf1adf00 task.stack: ffff8801c6180000
RIP: 0010:[<ffffffff81124d46>]  [<ffffffff81124d46>] get_work_pool+0xf6/0x1d0 kernel/workqueue.c:716
RSP: 0018:ffff8801c6187898  EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffff8801cf1ae7b0
RDX: 00000003ffffffc0 RSI: ffffffff81124d2e RDI: 0000000000000046
RBP: ffff8801c61878b0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8801c58d0000
R13: ffff8801c58d1730 R14: ffff8801c58d1750 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055db62395a98 CR3: 00000001d6d0b000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Stack:
 dffffc0000000000 ffff8801c58d0000 ffff8801c58d1730 ffff8801c6187a30
 ffffffff8112b849 ffffffff8112b760 ffffffff8427e8c8 1ffff10038c30f1d
 ffff8801c61878f8 ffffffff81207265 0000000041b58ab3 ffffffff82e36431
Call Trace:
 [<ffffffff8112b849>] start_flush_work kernel/workqueue.c:2785 [inline]
 [<ffffffff8112b849>] flush_work+0xe9/0x700 kernel/workqueue.c:2845
 [<ffffffff8263589e>] xfrm_policy_fini+0x2e/0x320 net/xfrm/xfrm_policy.c:3051
 [<ffffffff82635bb6>] xfrm_net_exit+0x26/0x40 net/xfrm/xfrm_policy.c:3118
 [<ffffffff822e36c0>] ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:136
 [<ffffffff822e6456>] cleanup_net+0x3d6/0x8a0 net/core/net_namespace.c:473
 [<ffffffff8113003b>] process_one_work+0x88b/0x15c0 kernel/workqueue.c:2092
 [<ffffffff8113134f>] worker_thread+0x5df/0x11d0 kernel/workqueue.c:2226
 [<ffffffff81141e38>] kthread+0x278/0x310 kernel/kthread.c:211
 [<ffffffff82812b5c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Code: 11 66 1f 00 4c 89 e0 5b 41 5c 41 5d 5d c3 e8 02 66 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 bd 00 00 00 4c 8b 23 e8 d8 65 1f 00 5b 4c 89 
RIP  [<ffffffff81124d46>] get_work_pool+0xf6/0x1d0 kernel/workqueue.c:716
 RSP <ffff8801c6187898>
---[ end trace f9bb76d8381dd888 ]---