__linkwatch_run_queue+0x233/0x6a0 net/core/link_watch.c:213 linkwatch_event+0x4a/0x60 net/core/link_watch.c:252 process_one_work+0x9ac/0x1680 kernel/workqueue.c:2307 worker_thread+0x652/0x11c0 kernel/workqueue.c:2454 kthread+0x405/0x4f0 kernel/kthread.c:345 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3729 at lib/ref_tracker.c:120 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline] WARNING: CPU: 1 PID: 3729 at lib/ref_tracker.c:120 ref_tracker_free.cold+0x110/0x14e lib/ref_tracker.c:119 Modules linked in: CPU: 1 PID: 3729 Comm: kworker/1:9 Not tainted 5.16.0-rc4-next-20211210-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events linkwatch_event RIP: 0010:ref_tracker_free.cold+0x110/0x14e lib/ref_tracker.c:120 Code: ea 03 48 c1 e0 2a 0f b6 04 02 84 c0 74 04 3c 03 7e 4c 8b 7b 18 e8 6b 54 e9 fa e8 26 4d 57 f8 4c 89 ee 48 89 ef e8 fb 33 36 00 <0f> 0b 41 bd ea ff ff ff e9 bd 60 e9 fa 4c 89 f7 e8 16 45 a2 f8 e9 RSP: 0018:ffffc9000290fb18 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88802256cb80 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff88806b6005b8 R08: 0000000000000001 R09: ffffffff8ffa1967 R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff92000521f65 R13: 0000000000000292 R14: ffff88802256cb98 R15: 00000000bea0008c FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f34c6a68602 CR3: 000000006b61d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netdev_tracker_free include/linux/netdevice.h:3868 [inline] dev_put_track include/linux/netdevice.h:3885 [inline] linkwatch_do_dev+0x96/0x160 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+0x9ac/0x1680 kernel/workqueue.c:2307 process_scheduled_works kernel/workqueue.c:2370 [inline] worker_thread+0x853/0x11c0 kernel/workqueue.c:2456 kthread+0x405/0x4f0 kernel/kthread.c:345 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295