------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: lib/refcount.c:31 at refcount_warn_saturate+0x7c/0x130 lib/refcount.c:31, CPU#0: kworker/u8:6/334
Modules linked in:
CPU: 0 UID: 0 PID: 334 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Workqueue: events_unbound linkwatch_event
RIP: 0010:refcount_warn_saturate+0x7c/0x130 lib/refcount.c:31
Code: 60 2e 8e 87 e8 35 dc f1 fe 83 fd 02 0f 84 a1 00 00 00 76 27 83 fd 03 74 7d 83 fd 04 75 3e e8 0b e1 f1 fe 48 8d 3d c4 ca 11 08 <67> 48 0f b9 3a e8 fa e0 f1 fe 5b 5d e9 d3 1e 97 04 85 ed 74 3a e8
RSP: 0018:ffffc9000167f820 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88811addc614 RCX: ffffffff82bf5adb
RDX: ffff888106b857c0 RSI: ffffffff82bf5af5 RDI: ffffffff8ad125c0
RBP: 0000000000000004 R08: 0000000000000005 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff920002cff09
R13: ffff88811addc614 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88826896a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff1ee7ecfe0 CR3: 00000001165dc000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __refcount_dec include/linux/refcount.h:461 [inline]
 refcount_dec include/linux/refcount.h:476 [inline]
 ref_tracker_free+0x5cd/0x6c0 lib/ref_tracker.c:304
 netdev_tracker_free include/linux/netdevice.h:4420 [inline]
 netdev_put include/linux/netdevice.h:4437 [inline]
 netdev_put include/linux/netdevice.h:4433 [inline]
 netdev_watchdog_down net/sched/sch_generic.c:575 [inline]
 dev_deactivate_many+0x288/0xc40 net/sched/sch_generic.c:1366
 dev_deactivate+0xf8/0x1c0 net/sched/sch_generic.c:1397
 linkwatch_do_dev+0x113/0x160 net/core/link_watch.c:184
 __linkwatch_run_queue+0x3a7/0x7a0 net/core/link_watch.c:244
 linkwatch_event+0x8f/0xc0 net/core/link_watch.c:304
 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3421
 kthread+0x3b3/0x730 kernel/kthread.c:463
 ret_from_fork+0x6c3/0xa20 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	2e 8e 87 e8 35 dc f1 	cs mov -0xe23ca18(%rdi),%es
   7:	fe 83 fd 02 0f 84    	incb   -0x7bf0fd03(%rbx)
   d:	a1 00 00 00 76 27 83 	movabs 0x3fd832776000000,%eax
  14:	fd 03
  16:	74 7d                	je     0x95
  18:	83 fd 04             	cmp    $0x4,%ebp
  1b:	75 3e                	jne    0x5b
  1d:	e8 0b e1 f1 fe       	call   0xfef1e12d
  22:	48 8d 3d c4 ca 11 08 	lea    0x811cac4(%rip),%rdi        # 0x811caed
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	e8 fa e0 f1 fe       	call   0xfef1e12d
  33:	5b                   	pop    %rbx
  34:	5d                   	pop    %rbp
  35:	e9 d3 1e 97 04       	jmp    0x4971f0d
  3a:	85 ed                	test   %ebp,%ebp
  3c:	74 3a                	je     0x78
  3e:	e8                   	.byte 0xe8