list_del corruption, ffff8881215c9dc0->next is NULL
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:52!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 49 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: events_unbound linkwatch_event
RIP: 0010:__list_del_entry_valid_or_report+0xf2/0x200 lib/list_debug.c:52
Code: 00 49 3b 5c 24 08 0f 85 a8 00 00 00 5b b8 01 00 00 00 5d 41 5c e9 3e 8b b8 04 48 89 de 48 c7 c7 a0 7c 89 87 e8 5f 4c ce fe 90 <0f> 0b 48 89 de 48 c7 c7 00 7d 89 87 e8 4d 4c ce fe 90 0f 0b 4c 89
RSP: 0018:ffffc90000547888 EFLAGS: 00010082
RAX: 0000000000000033 RBX: ffff8881215c9dc0 RCX: ffffffff815d3269
RDX: 0000000000000000 RSI: ffffffff815dad96 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000202 R11: 0000000000000001 R12: 0000000000000000
R13: ffffc900005478d8 R14: ffff88811cdf4630 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888268ea0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7f4d326e9c CR3: 0000000116814000 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+0x1a5/0x830 lib/ref_tracker.c:330
 netdev_tracker_free include/linux/netdevice.h:4395 [inline]
 netdev_put include/linux/netdevice.h:4412 [inline]
 netdev_put include/linux/netdevice.h:4408 [inline]
 netdev_watchdog_down net/sched/sch_generic.c:572 [inline]
 dev_deactivate_many+0x286/0xd30 net/sched/sch_generic.c:1370
 dev_deactivate+0xf8/0x1c0 net/sched/sch_generic.c:1401
 linkwatch_do_dev+0x11e/0x160 net/core/link_watch.c:184
 __linkwatch_run_queue+0x2a3/0x7a0 net/core/link_watch.c:244
 linkwatch_event+0x8f/0xc0 net/core/link_watch.c:304
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x56d/0x700 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+0xf2/0x200 lib/list_debug.c:52
Code: 00 49 3b 5c 24 08 0f 85 a8 00 00 00 5b b8 01 00 00 00 5d 41 5c e9 3e 8b b8 04 48 89 de 48 c7 c7 a0 7c 89 87 e8 5f 4c ce fe 90 <0f> 0b 48 89 de 48 c7 c7 00 7d 89 87 e8 4d 4c ce fe 90 0f 0b 4c 89
RSP: 0018:ffffc90000547888 EFLAGS: 00010082
RAX: 0000000000000033 RBX: ffff8881215c9dc0 RCX: ffffffff815d3269
RDX: 0000000000000000 RSI: ffffffff815dad96 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000202 R11: 0000000000000001 R12: 0000000000000000
R13: ffffc900005478d8 R14: ffff88811cdf4630 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888268ea0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7f4d326e9c CR3: 0000000116814000 CR4: 00000000003506f0