list_del corruption, ffff888113a9fc40->next is NULL
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:52!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 288 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events_unbound linkwatch_event
RIP: 0010:__list_del_entry_valid_or_report.cold+0x22/0x2a lib/list_debug.c:52
Code: e8 bd d7 fa ff 90 0f 0b 48 89 de 48 c7 c7 60 43 b0 87 e8 ab d7 fa ff 90 0f 0b 48 89 de 48 c7 c7 00 43 b0 87 e8 99 d7 fa ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000527870 EFLAGS: 00010086
RAX: 0000000000000033 RBX: ffff888113a9fc40 RCX: 0000000000000000
RDX: 0000000000000033 RSI: ffffffff81922ed9 RDI: fffff520000a4eff
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000202 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc900005278c0 R14: ffff88811ae38638 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888268787000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08c52ca4c0 CR3: 0000000121708000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_move_tail include/linux/list.h:318 [inline]
 ref_tracker_free+0x1a7/0x6c0 lib/ref_tracker.c:329
 netdev_tracker_free include/linux/netdevice.h:4474 [inline]
 netdev_put include/linux/netdevice.h:4491 [inline]
 netdev_put include/linux/netdevice.h:4487 [inline]
 netdev_watchdog_down net/sched/sch_generic.c:600 [inline]
 dev_deactivate_many+0x28c/0xfe0 net/sched/sch_generic.c:1363
 dev_deactivate+0x109/0x1d0 net/sched/sch_generic.c:1397
 linkwatch_do_dev net/core/link_watch.c:184 [inline]
 linkwatch_do_dev+0xd3/0x120 net/core/link_watch.c:166
 __linkwatch_run_queue+0x3a5/0x810 net/core/link_watch.c:240
 linkwatch_event+0x8f/0xc0 net/core/link_watch.c:314
 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3302
 process_scheduled_works kernel/workqueue.c:3385 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3466
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report.cold+0x22/0x2a lib/list_debug.c:52
Code: e8 bd d7 fa ff 90 0f 0b 48 89 de 48 c7 c7 60 43 b0 87 e8 ab d7 fa ff 90 0f 0b 48 89 de 48 c7 c7 00 43 b0 87 e8 99 d7 fa ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000527870 EFLAGS: 00010086
RAX: 0000000000000033 RBX: ffff888113a9fc40 RCX: 0000000000000000
RDX: 0000000000000033 RSI: ffffffff81922ed9 RDI: fffff520000a4eff
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000202 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc900005278c0 R14: ffff88811ae38638 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888268787000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08c52ca4c0 CR3: 0000000121708000 CR4: 00000000003506f0