------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 8157 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 8157 Comm: kworker/1:6 Not tainted 5.16.0-rc1-next-20211118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events linkwatch_event
RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Code: 1d d7 4f a5 09 31 ff 89 de e8 8d 9d a0 fd 84 db 75 e0 e8 a4 99 a0 fd 48 c7 c7 e0 71 04 8a c6 05 b7 4f a5 09 01 e8 2b a6 26 05 <0f> 0b eb c4 e8 88 99 a0 fd 0f b6 1d a6 4f a5 09 31 ff 89 de e8 58
RSP: 0018:ffffc9000c277c28 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88803a99ba80 RSI: ffffffff815f11d8 RDI: fffff5200184ef77
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815eaf7e R11: 0000000000000000 R12: ffff888077dfc5b0
R13: 0000000000000063 R14: 0000000000000000 R15: ffff888077dfc000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d1b2bef118 CR3: 000000002d184000 CR4: 00000000003526e0
Call Trace:
 <TASK>
 __refcount_dec include/linux/refcount.h:344 [inline]
 refcount_dec include/linux/refcount.h:359 [inline]
 dev_put include/linux/netdevice.h:3817 [inline]
 linkwatch_do_dev+0x134/0x150 net/core/link_watch.c:169
 __linkwatch_run_queue+0x233/0x6a0 net/core/link_watch.c:213
 linkwatch_event+0x4a/0x60 net/core/link_watch.c:252
 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>