------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 4919 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 4919 Comm: kworker/0:1 Not tainted 5.16.0-rc2-next-20211125-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 dc ee 99 09 31 ff 89 de e8 4d 1b 95 fd 84 db 75 e0 e8 64 17 95 fd 48 c7 c7 60 7e 04 8a c6 05 bc ee 99 09 01 e8 17 03 28 05 <0f> 0b eb c4 e8 48 17 95 fd 0f b6 1d ab ee 99 09 31 ff 89 de e8 18 RSP: 0018:ffffc9000c9a7c28 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888076f23a80 RSI: ffffffff815f3208 RDI: fffff52001934f77 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ecfae R11: 0000000000000000 R12: ffff88802f6c85b0 R13: 0000000000000042 R14: 0000000000000000 R15: ffff88802f6c8000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f82bc231000 CR3: 000000007b278000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __refcount_dec include/linux/refcount.h:344 [inline] refcount_dec include/linux/refcount.h:359 [inline] dev_put include/linux/netdevice.h:3815 [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:2299 worker_thread+0x658/0x11f0 kernel/workqueue.c:2446 kthread+0x405/0x4f0 kernel/kthread.c:345 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295