list_del corruption, ffff88805258ee20->next is NULL
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:49!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3769 Comm: kworker/u4:9 Not tainted 5.19.0-rc2-next-20220615-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 62 e4 f0 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 40 6a 28 8a e8 4e e4 f0 ff 0f 0b 48 89 ee 48 c7 c7 20 69 28 8a e8 3d e4 f0 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 e0 69 28 8a e8 29 e4 f0 ff 0f 0b
RSP: 0018:ffffc9000484fbc0 EFLAGS: 00010286
RAX: 0000000000000033 RBX: ffff88805258ee10 RCX: 0000000000000000
RDX: ffff888023849d40 RSI: ffffffff81610f78 RDI: fffff52000909f6a
RBP: ffff88805258ee20 R08: 0000000000000033 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88805258ee28
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555e8be9ddf0 CR3: 000000001ed4b000 CR4: 00000000003506f0
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 62 e4 f0 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 40 6a 28 8a e8 4e e4 f0 ff 0f 0b 48 89 ee 48 c7 c7 20 69 28 8a e8 3d e4 f0 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 e0 69 28 8a e8 29 e4 f0 ff 0f 0b
RSP: 0018:ffffc9000484fbc0 EFLAGS: 00010286
RAX: 0000000000000033 RBX: ffff88805258ee10 RCX: 0000000000000000
RDX: ffff888023849d40 RSI: ffffffff81610f78 RDI: fffff52000909f6a
RBP: ffff88805258ee20 R08: 0000000000000033 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88805258ee28
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555e8be9ddf0 CR3: 000000001ed4b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400