------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 4893 at lib/refcount.c:31 refcount_warn_saturate+0x194/0x1f8 lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 4893 Comm: syz.3.130 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 : ffff8000211f7800
x29: ffff8000211f7800 x28: 1fffe00018808405 x27: dfff800000000000
x26: dfff800000000000 x25: ffff70000423ef08 x24: ffff0000d1a52800
x23: ffff0000d1a52810 x22: ffff8000211f7840 x21: 0000000000000000
x20: ffff0000dc9205fc x19: ffff800017a17000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082d4a88 x15: 0000000000000000
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100
x11: ff008000081924a8 x10: 0000000000000000 x9 : 68335a67c4f7a000
x8 : 68335a67c4f7a000 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000211f7298 x4 : ffff800015134e80 x3 : ffff800008530c5c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
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:1399
 __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+0x2038/0x2b28 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: 22040
hardirqs last  enabled at (22039): [<ffff80000830abcc>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (22040): [<ffff8000119080a8>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (22024): [<ffff8000081aa3e0>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (22024): [<ffff8000081aa3e0>] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624
softirqs last disabled at (21369): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---