------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 17666 at lib/refcount.c:31 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 17666 Comm: syz.2.2525 Not tainted 6.1.133-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
lr : refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
sp : ffff800022027750
x29: ffff800022027750 x28: 1fffe0001bfa1003 x27: dfff800000000000
x26: dfff800000000000 x25: ffff700004404ef4 x24: ffff0000c3397800
x23: ffff0000c3397810 x22: ffff8000220277c0 x21: 0000000000000004
x20: ffff0000dca705fc x19: ffff8000184e9000 x18: ffff800022026bc0
x17: 0000000000000000 x16: ffff800012328cac x15: 0000000000000000
x14: 00000000ffffffff x13: fffffffffffc8808 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : ff024626cc2cb300
x8 : ff024626cc2cb300 x7 : fffffffffffc8808 x6 : fffffffffffc87c8
x5 : ffff800022027038 x4 : ffff800015bb86c0 x3 : ffff800008587994
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
 __refcount_dec include/linux/refcount.h:344 [inline]
 refcount_dec include/linux/refcount.h:359 [inline]
 ref_tracker_free+0x550/0x6ac lib/ref_tracker.c:118
 netdev_tracker_free include/linux/netdevice.h:4071 [inline]
 netdev_put include/linux/netdevice.h:4088 [inline]
 ax25_release+0x344/0x89c net/ax25/af_ax25.c:1080
 __sock_release net/socket.c:654 [inline]
 sock_close+0xb8/0x1fc net/socket.c:1400
 __fput+0x1c8/0x7c8 fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x240/0x2f0 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132
 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+0x9c/0x168 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: 4444
hardirqs last  enabled at (4443): [<ffff80000834060c>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (4444): [<ffff80001232498c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (4400): [<ffff8000114a20fc>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (4400): [<ffff8000114a20fc>] ax25_cb_del+0x14c/0x198 net/ax25/af_ax25.c:70
softirqs last disabled at (4398): [<ffff8000114a1fe0>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (4398): [<ffff8000114a1fe0>] ax25_cb_del+0x30/0x198 net/ax25/af_ax25.c:65
---[ end trace 0000000000000000 ]---