------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 11552 at lib/refcount.c:31 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
Modules linked in:
CPU: 0 UID: 0 PID: 11552 Comm: syz.3.1588 Not tainted 6.14.0-rc7-syzkaller-gb5737d35364f #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 : ffff80009bf375b0
x29: ffff80009bf375b0 x28: dfff800000000000 x27: ffff0000c2788080
x26: dfff800000000000 x25: ffff7000137e6ec0 x24: ffff0000d541a010
x23: ffff0000d5a64000 x22: ffff80009bf37620 x21: 0000000000000004
x20: ffff0000c6d7664c x19: ffff800092f0b000 x18: 1fffe000366f1886
x17: ffff80008fbbd000 x16: ffff800080469530 x15: 0000000000000001
x14: 1fffe000366f42f0 x13: ffff80009bf38000 x12: 0000000000000003
x11: 0000000000000001 x10: 0000000000000003 x9 : 255ca6f85f77e800
x8 : 255ca6f85f77e800 x7 : ffff8000803d59a0 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : ffff80008b87a760 x0 : ffff800123c84000
Call trace:
 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31 (P)
 __refcount_dec include/linux/refcount.h:336 [inline]
 refcount_dec include/linux/refcount.h:351 [inline]
 ref_tracker_free+0x550/0x6ac lib/ref_tracker.c:236
 netdev_tracker_free include/linux/netdevice.h:4302 [inline]
 netdev_put include/linux/netdevice.h:4319 [inline]
 ax25_release+0x348/0x8a4 net/ax25/af_ax25.c:1080
 __sock_release net/socket.c:647 [inline]
 sock_close+0xa4/0x1e8 net/socket.c:1398
 __fput+0x340/0x760 fs/file_table.c:464
 ____fput+0x20/0x30 fs/file_table.c:492
 task_work_run+0x230/0x2e0 kernel/task_work.c:227
 get_signal+0x1324/0x1500 kernel/signal.c:2809
 do_signal+0x22c/0x3a04 arch/arm64/kernel/signal.c:1658
 do_notify_resume+0x74/0x1f4 arch/arm64/kernel/entry-common.c:148
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 996
hardirqs last  enabled at (995): [<ffff8000803d5a40>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1533 [inline]
hardirqs last  enabled at (995): [<ffff8000803d5a40>] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5132
hardirqs last disabled at (996): [<ffff80008b7c3e94>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (940): [<ffff80008a85fd14>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (940): [<ffff80008a85fd14>] ax25_cb_del+0x14c/0x198 net/ax25/af_ax25.c:70
softirqs last disabled at (936): [<ffff80008a85fbf8>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (936): [<ffff80008a85fbf8>] ax25_cb_del+0x30/0x198 net/ax25/af_ax25.c:65
---[ end trace 0000000000000000 ]---