list_del corruption, ffff888134959e80->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: 36 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events_unbound linkwatch_event
RIP: 0010:__list_del_entry_valid_or_report.cold+0x22/0x2a lib/list_debug.c:52
Code: e8 4d cc fa ff 90 0f 0b 48 89 de 48 c7 c7 a0 a7 af 87 e8 3b cc fa ff 90 0f 0b 48 89 de 48 c7 c7 40 a7 af 87 e8 29 cc 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:ffffc90000267888 EFLAGS: 00010086
RAX: 0000000000000033 RBX: ffff888134959e80 RCX: 0000000000000000
RDX: 0000000000000033 RSI: ffffffff819172f9 RDI: fffff5200004cf02
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000202 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc900002678d8 R14: ffff88811a610638 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8882686d3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f928c1fbfd0 CR3: 0000000107b2a000 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:4423 [inline]
 netdev_put include/linux/netdevice.h:4440 [inline]
 netdev_put include/linux/netdevice.h:4436 [inline]
 netdev_watchdog_down net/sched/sch_generic.c:575 [inline]
 dev_deactivate_many+0x288/0xc40 net/sched/sch_generic.c:1364
 dev_deactivate+0xf8/0x1c0 net/sched/sch_generic.c:1395
 linkwatch_do_dev net/core/link_watch.c:184 [inline]
 linkwatch_do_dev+0xce/0x110 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+0x9d7/0x1920 kernel/workqueue.c:3275
 process_scheduled_works kernel/workqueue.c:3358 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3439
 kthread+0x370/0x450 kernel/kthread.c:467
 ret_from_fork+0x6c3/0xcb0 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 4d cc fa ff 90 0f 0b 48 89 de 48 c7 c7 a0 a7 af 87 e8 3b cc fa ff 90 0f 0b 48 89 de 48 c7 c7 40 a7 af 87 e8 29 cc 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:ffffc90000267888 EFLAGS: 00010086
RAX: 0000000000000033 RBX: ffff888134959e80 RCX: 0000000000000000
RDX: 0000000000000033 RSI: ffffffff819172f9 RDI: fffff5200004cf02
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000202 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc900002678d8 R14: ffff88811a610638 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8882686d3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f928c1fbfd0 CR3: 0000000107b2a000 CR4: 00000000003506f0