list_del corruption, ffff88801e5aaa20->next is NULL
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:49!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3985 Comm: kworker/u4:11 Not tainted 5.19.0-rc3-next-20220622-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__list_del_entry_valid.cold+0x48/0x72 lib/list_debug.c:49
Code: e8 82 e6 f0 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 c0 73 28 8a e8 6e e6 f0 ff 0f 0b 48 89 ee 48 c7 c7 a0 72 28 8a e8 5d e6 f0 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 60 73 28 8a e8 49 e6 f0 ff 0f 0b
RSP: 0018:ffffc900084efbc0 EFLAGS: 00010286
RAX: 0000000000000033 RBX: ffff88801e5aaa10 RCX: 0000000000000000
RDX: ffff88801e78ba80 RSI: ffffffff81610778 RDI: fffff5200109df6a
RBP: ffff88801e5aaa20 R08: 0000000000000033 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88801e5aaa28
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563496c71950 CR3: 000000001f3dd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:134 [inline]
 list_del include/linux/list.h:148 [inline]
 cttimeout_net_exit+0x211/0x540 net/netfilter/nfnetlink_cttimeout.c:618
 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:163
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:595
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid.cold+0x48/0x72 lib/list_debug.c:49
Code: e8 82 e6 f0 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 c0 73 28 8a e8 6e e6 f0 ff 0f 0b 48 89 ee 48 c7 c7 a0 72 28 8a e8 5d e6 f0 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 60 73 28 8a e8 49 e6 f0 ff 0f 0b
RSP: 0018:ffffc900084efbc0 EFLAGS: 00010286
RAX: 0000000000000033 RBX: ffff88801e5aaa10 RCX: 0000000000000000
RDX: ffff88801e78ba80 RSI: ffffffff81610778 RDI: fffff5200109df6a
RBP: ffff88801e5aaa20 R08: 0000000000000033 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88801e5aaa28
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563496c71950 CR3: 0000000025ed6000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400