process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
------------[ cut here ]------------
WARNING: CPU: 0 PID: 84 at lib/ref_tracker.c:255 ref_tracker_free+0x61a/0x830 lib/ref_tracker.c:255
Modules linked in:
CPU: 0 UID: 0 PID: 84 Comm: kworker/u32:4 Not tainted 6.15.0-rc1-syzkaller-00325-g7cdabafc0012 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound linkwatch_event
RIP: 0010:ref_tracker_free+0x61a/0x830 lib/ref_tracker.c:255
Code: 00 44 8b 73 18 31 ff 44 89 f6 e8 21 21 bc fc 45 85 f6 0f 85 a6 00 00 00 e8 d3 25 bc fc 48 8b 34 24 48 89 ef e8 f7 b4 73 06 90 <0f> 0b 90 bb ea ff ff ff e9 50 fd ff ff e8 b4 25 bc fc 4c 8d 6d 44
RSP: 0018:ffffc9000109f8b0 EFLAGS: 00010202
RAX: 0000000000000201 RBX: ffff88801fdb0e00 RCX: 0000000000000000
RDX: 0000000000000202 RSI: ffffffff8dbeb4d6 RDI: 0000000000000001
RBP: ffff888044c60610 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90867f17 R11: 0000000000000000 R12: 1ffff92000213f18
R13: ffffc9000109f8e0 R14: 00000000068603dc R15: ffff88801fdb0e18
FS:  0000000000000000(0000) GS:ffff8880977b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000080142000 CR3: 00000000233a6000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 netdev_tracker_free include/linux/netdevice.h:4351 [inline]
 netdev_put include/linux/netdevice.h:4368 [inline]
 netdev_put include/linux/netdevice.h:4364 [inline]
 netdev_watchdog_down net/sched/sch_generic.c:571 [inline]
 dev_deactivate_many+0x28d/0xd50 net/sched/sch_generic.c:1367
 dev_deactivate+0xf8/0x1c0 net/sched/sch_generic.c:1398
 linkwatch_do_dev+0x11e/0x160 net/core/link_watch.c:184
 __linkwatch_run_queue+0x2aa/0x8a0 net/core/link_watch.c:244
 linkwatch_event+0x8f/0xc0 net/core/link_watch.c:304
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>