------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 6867 at lib/refcount.c:31 refcount_warn_saturate+0x194/0x1f8 lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 6867 Comm: syz.2.881 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : refcount_warn_saturate+0x194/0x1f8 lib/refcount.c:31
lr : refcount_warn_saturate+0x194/0x1f8 lib/refcount.c:31
sp : ffff800021a07700
x29: ffff800021a07700 x28: 1fffe000197c4305 x27: dfff800000000000
x26: dfff800000000000 x25: ffff700004340ee8 x24: ffff0000cb907a00
x23: ffff0000cb907a10 x22: ffff800021a07740 x21: 0000000000000000
x20: ffff0000dc81e5fc x19: ffff800017bc9000 x18: ffff800011b7bf60
x17: 1fffe00033eaed7e x16: ffff8000082d9364 x15: ffff8000151fd000
x14: 0000000000000001 x13: 1fffe0001c0fecd0 x12: 0000000000000000
x11: 0000000000000000 x10: ffff60001c0fecd1 x9 : 72e3a1a1881e5600
x8 : 72e3a1a1881e5600 x7 : ffff80000825796c x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff800008246798
x2 : 0000000000000001 x1 : 0000000000000004 x0 : 0000000000000001
Call trace:
 refcount_warn_saturate+0x194/0x1f8 lib/refcount.c:31
 __refcount_dec include/linux/refcount.h:344 [inline]
 refcount_dec include/linux/refcount.h:359 [inline]
 ref_tracker_free+0x560/0x6b4 lib/ref_tracker.c:118
 netdev_tracker_free include/linux/netdevice.h:4071 [inline]
 netdev_put include/linux/netdevice.h:4088 [inline]
 ax25_release+0x2c8/0x87c net/ax25/af_ax25.c:1080
 __sock_release net/socket.c:654 [inline]
 sock_close+0xb4/0x1f8 net/socket.c:1399
 __fput+0x1bc/0x7b8 fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x1ec/0x278 kernel/task_work.c:203
 get_signal+0x111c/0x1304 kernel/signal.c:2648
 do_signal arch/arm64/kernel/signal.c:1081 [inline]
 do_notify_resume+0x33c/0x2aa4 arch/arm64/kernel/signal.c:1134
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 858
hardirqs last  enabled at (857): [<ffff800008257a00>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline]
hardirqs last  enabled at (857): [<ffff800008257a00>] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004
hardirqs last disabled at (858): [<ffff800011a1c234>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (846): [<ffff8000081ac37c>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (846): [<ffff8000081ac37c>] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624
softirqs last disabled at (825): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---