------------[ cut here ]------------
WARNING: net/xfrm/xfrm_state.c:3306 at xfrm_state_fini+0x26d/0x2f0, CPU#1: kworker/u8:2/5705
Modules linked in:
CPU: 1 UID: 0 PID: 5705 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:xfrm_state_fini+0x26d/0x2f0
Code: c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 1b 14 f9 f7 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 a9 fa d8 f7 e8 64 6a 94 f7 90 <0f> 0b 90 e9 fd fd ff ff e8 56 6a 94 f7 90 0f 0b 90 e9 60 fe ff ff
RSP: 0018:ffffc90002eaf878 EFLAGS: 00010293
RAX: ffffffff8a2b68bc RBX: ffff888024228000 RCX: ffff88801f111d00
RDX: 0000000000000000 RSI: ffffffff8ddb21f6 RDI: ffff88801f111d00
RBP: ffffc90002eaf990 R08: ffffffff8fc43c37 R09: 1ffffffff1f88786
R10: dffffc0000000000 R11: fffffbfff1f88787 R12: ffffffff8f83dd00
R13: 1ffff920005d5f3c R14: ffff8880242294c0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881a39e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8268217fc8 CR3: 000000002aa4e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 xfrm_net_exit+0x2d/0x70
 ops_undo_list+0x49a/0x990
 cleanup_net+0x4d8/0x810
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x4bc/0x870
 ret_from_fork_asm+0x1a/0x30
 </TASK>
