------------[ 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#1: kworker/u8:1/32
Modules linked in:
CPU: 1 UID: 0 PID: 32 Comm: kworker/u8:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events_unbound linkwatch_event
RIP: 0010:refcount_warn_saturate+0x7c/0x130 lib/refcount.c:31
Code: 60 1d b0 87 e8 e5 b0 e2 fe 83 fd 02 0f 84 a1 00 00 00 76 27 83 fd 03 74 7d 83 fd 04 75 3e e8 bb b5 e2 fe 48 8d 3d b4 24 25 08 <67> 48 0f b9 3a e8 aa b5 e2 fe 5b 5d e9 03 53 a0 04 85 ed 74 3a e8
RSP: 0018:ffffc90000227878 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88811cfe465c RCX: ffffffff82d00cab
RDX: ffff8881036abb80 RSI: ffffffff82d00cc5 RDI: ffffffff8af53180
RBP: 0000000000000004 R08: 0000000000000005 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000000000 R12: 1ffff92000044f14
R13: ffff88811cfe465c R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8882687a8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee1cff8 CR3: 0000000114ac6000 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:303
 netdev_tracker_free include/linux/netdevice.h:4491 [inline]
 netdev_put include/linux/netdevice.h:4508 [inline]
 netdev_put include/linux/netdevice.h:4504 [inline]
 netdev_watchdog_down net/sched/sch_generic.c:600 [inline]
 dev_deactivate_many+0x28c/0xfe0 net/sched/sch_generic.c:1363
 dev_deactivate+0x109/0x1d0 net/sched/sch_generic.c:1397
 linkwatch_do_dev net/core/link_watch.c:184 [inline]
 linkwatch_do_dev+0xd3/0x120 net/core/link_watch.c:166
 __linkwatch_run_queue+0x3a5/0x810 net/core/link_watch.c:240
 linkwatch_event+0x8f/0xc0 net/core/link_watch.c:314
 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3302
 process_scheduled_works kernel/workqueue.c:3385 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3466
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	1d b0 87 e8 e5       	sbb    $0xe5e887b0,%eax
   5:	b0 e2                	mov    $0xe2,%al
   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 bb b5 e2 fe       	call   0xfee2b5dd
  22:	48 8d 3d b4 24 25 08 	lea    0x82524b4(%rip),%rdi        # 0x82524dd
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	e8 aa b5 e2 fe       	call   0xfee2b5dd
  33:	5b                   	pop    %rbx
  34:	5d                   	pop    %rbp
  35:	e9 03 53 a0 04       	jmp    0x4a0533d
  3a:	85 ed                	test   %ebp,%ebp
  3c:	74 3a                	je     0x78
  3e:	e8                   	.byte 0xe8