------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 7485 at lib/refcount.c:31 refcount_warn_saturate+0x194/0x1f8 lib/refcount.c:31
Modules linked in:
CPU: 0 PID: 7485 Comm: syz.2.968 Not tainted 6.1.143-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 60400005 (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 : ffff800021eb7800
x29: ffff800021eb7800 x28: 1fffe00019be9105 x27: dfff800000000000
x26: dfff800000000000 x25: ffff7000043d6f08 x24: ffff0000d4df9200
x23: ffff0000d4df9210 x22: ffff800021eb7840 x21: 0000000000000000
x20: ffff0000dc1d65fc x19: ffff800017a77000 x18: ffff800011aabce0
x17: 1fffe00033ed9d7e x16: ffff8000082d2400 x15: 0000000040000002
x14: 0000000000000002 x13: 1ffff00002a160b1 x12: 0000000000ff0100
x11: ff0080000a88ba74 x10: 0000000000000003 x9 : ba4a76f0485ca000
x8 : ba4a76f0485ca000 x7 : ffff800008251edc x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : ffff800011aad7e0 x0 : ffff80018a6c9000
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+0x538/0x694 lib/ref_tracker.c:118
 netdev_tracker_free include/linux/netdevice.h:4071 [inline]
 netdev_put include/linux/netdevice.h:4088 [inline]
 ax25_release+0x2c8/0x88c net/ax25/af_ax25.c:1080
 __sock_release net/socket.c:654 [inline]
 sock_close+0xb4/0x1f8 net/socket.c:1400
 __fput+0x1bc/0x7c0 fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x1ec/0x270 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x1f70/0x2b0c arch/arm64/kernel/signal.c:1137
 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+0x98/0x138 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: 3722
hardirqs last  enabled at (3721): [<ffff800008251f70>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1367 [inline]
hardirqs last  enabled at (3721): [<ffff800008251f70>] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5003
hardirqs last disabled at (3722): [<ffff800011943868>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (3714): [<ffff8000081a9670>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (3714): [<ffff8000081a9670>] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624
softirqs last disabled at (3705): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---