------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 3 PID: 11589 at lib/refcount.c:31 refcount_warn_saturate+0x1ed/0x210 lib/refcount.c:31
Modules linked in:
CPU: 3 UID: 0 PID: 11589 Comm: syz.5.1435 Not tainted 6.13.0-rc3-syzkaller-00193-ge9b8ffafd20a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:refcount_warn_saturate+0x1ed/0x210 lib/refcount.c:31
Code: 8b e8 d7 45 ba fc 90 0f 0b 90 90 e9 c3 fe ff ff e8 38 0c fa fc c6 05 06 dc a7 0b 01 90 48 c7 c7 00 99 d1 8b e8 b4 45 ba fc 90 <0f> 0b 90 90 e9 a0 fe ff ff 48 89 ef e8 02 b4 5c fd e9 44 fe ff ff
RSP: 0018:ffffc9000425f8f8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff815a5079
RDX: ffff888022320000 RSI: ffffffff815a5086 RDI: 0000000000000001
RBP: ffff88802be5a64c R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: 1ffff9200084bf24
R13: ffff88802be5a64c R14: 0000000000000000 R15: ffff88802be5a000
FS:  0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa30c4a7d60 CR3: 000000000df7e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_dec include/linux/refcount.h:336 [inline]
 refcount_dec include/linux/refcount.h:351 [inline]
 ref_tracker_free+0x710/0x820 lib/ref_tracker.c:236
 netdev_tracker_free include/linux/netdevice.h:4156 [inline]
 netdev_put include/linux/netdevice.h:4173 [inline]
 netdev_put include/linux/netdevice.h:4169 [inline]
 ax25_release+0x33f/0xa10 net/ax25/af_ax25.c:1069
 __sock_release+0xb0/0x270 net/socket.c:640
 sock_close+0x1c/0x30 net/socket.c:1408
 __fput+0x3f8/0xb60 fs/file_table.c:450
 task_work_run+0x14e/0x250 kernel/task_work.c:239
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0xadd/0x2d70 kernel/exit.c:938
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
 get_signal+0x24ed/0x26c0 kernel/signal.c:3017
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f470e387bbc
Code: Unable to access opcode bytes at 0x7f470e387b92.
RSP: 002b:00007f470f207ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: 0000000000000020 RBX: 00007f470f207fc0 RCX: 00007f470e387bbc
RDX: 0000000000000020 RSI: 00007f470f208010 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007f470f207f14 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006
R13: 00007f470f207f68 R14: 00007f470f208010 R15: 0000000000000000
 </TASK>