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
CPU: 1 PID: 8875 Comm: kworker/u4:7 Not tainted 4.20.0+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:get_work_pool+0x19c/0x260 kernel/workqueue.c:716
Code: 48 83 c4 68 5b 41 5c 41 5d 41 5e 5d c3 e8 bc ae 2e 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 aa 00 00 00 4c 8b 2b eb 9a e8 90 ae 2e 00 e8 fb
RSP: 0018:ffff888060a4f470 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffffffff81534618
RDX: 00000003ffffffc0 RSI: ffffffff81534694 RDI: 0000000000000007
RBP: ffff888060a4f4f8 R08: ffff88808faac2c0 R09: ffffed1015ce5b90
R10: ffffed1015ce5b8f R11: ffff8880ae72dc7b R12: 1ffff1100c149e8f
R13: 0000000000000004 R14: dffffc0000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5249a6d000 CR3: 0000000094f28000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 start_flush_work kernel/workqueue.c:2859 [inline]
 __flush_work+0x12f/0xa20 kernel/workqueue.c:2916
 flush_work+0x18/0x20 kernel/workqueue.c:2938
 xfrm_policy_fini+0xa4/0x640 net/xfrm/xfrm_policy.c:3862
 xfrm_net_exit+0x1d/0x70 net/xfrm/xfrm_policy.c:3928
 ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:153
 cleanup_net+0x51d/0xb10 net/core/net_namespace.c:551
 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153
 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 1f205e4c0ded8c57 ]---
RIP: 0010:get_work_pool+0x19c/0x260 kernel/workqueue.c:716
Code: 48 83 c4 68 5b 41 5c 41 5d 41 5e 5d c3 e8 bc ae 2e 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 aa 00 00 00 4c 8b 2b eb 9a e8 90 ae 2e 00 e8 fb
RSP: 0018:ffff888060a4f470 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffffffff81534618
RDX: 00000003ffffffc0 RSI: ffffffff81534694 RDI: 0000000000000007
RBP: ffff888060a4f4f8 R08: ffff88808faac2c0 R09: ffffed1015ce5b90
R10: ffffed1015ce5b8f R11: ffff8880ae72dc7b R12: 1ffff1100c149e8f
R13: 0000000000000004 R14: dffffc0000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5249a6d000 CR3: 0000000094f28000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400