------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 37 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 37 Comm: kworker/1:1 Not tainted 5.15.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: events linkwatch_event
RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Code: 1d 57 e5 a1 09 31 ff 89 de e8 2d 51 9c fd 84 db 75 e0 e8 44 4d 9c fd 48 c7 c7 20 49 04 8a c6 05 37 e5 a1 09 01 e8 82 07 33 05 <0f> 0b eb c4 e8 28 4d 9c fd 0f b6 1d 26 e5 a1 09 31 ff 89 de e8 f8
RSP: 0018:ffffc90000817c28 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888011c58180 RSI: ffffffff815e8ec8 RDI: fffff52000102f77
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815e2c9e R11: 0000000000000000 R12: ffff88804ed3c5b0
R13: 0000000000000063 R14: 0000000000000000 R15: ffff88804ed3c000
FS:  0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f923fcdbfb8 CR3: 0000000013c95000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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:4166 [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>