------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 14917 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31
Modules linked in:
CPU: 0 UID: 0 PID: 14917 Comm: syz.1.1965 Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31
Code: b2 00 00 00 e8 07 07 e1 fc 5b 5d c3 cc cc cc cc e8 fb 06 e1 fc c6 05 a4 51 48 0b 01 90 48 c7 c7 20 17 60 8c e8 87 98 a1 fc 90 <0f> 0b 90 90 eb d9 e8 db 06 e1 fc c6 05 81 51 48 0b 01 90 48 c7 c7
RSP: 0018:ffffc90004ecf728 EFLAGS: 00010246
RAX: c793890fc0975e00 RBX: ffff88807d5da64c RCX: ffff88802e9e5a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffffffff81601042 R09: fffffbfff1cfa8ac
R10: dffffc0000000000 R11: fffffbfff1cfa8ac R12: ffff88807d5da608
R13: 0000000000000000 R14: ffff88807d5da64c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3a3a8e CR3: 0000000037f76000 CR4: 00000000003526f0
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+0x6af/0x7e0 lib/ref_tracker.c:236
 netdev_tracker_free include/linux/netdevice.h:4139 [inline]
 netdev_put include/linux/netdevice.h:4156 [inline]
 ax25_release+0x368/0x950 net/ax25/af_ax25.c:1069
 __sock_release net/socket.c:640 [inline]
 sock_close+0xbc/0x240 net/socket.c:1408
 __fput+0x23c/0xa50 fs/file_table.c:450
 task_work_run+0x24f/0x310 kernel/task_work.c:239
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0xa2f/0x28e0 kernel/exit.c:938
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x16b2/0x1750 kernel/signal.c:3010
 arch_do_signal_or_restart+0x96/0x860 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+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e565b0805
Code: Unable to access opcode bytes at 0x7f7e565b07db.
RSP: 002b:00007ffe2ab23840 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f7e56735f80 RCX: 00007f7e565b0805
RDX: 00007ffe2ab23880 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f7e56737a80 R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000000d92b5
R13: 00007ffe2ab239b0 R14: 0000000000000bea R15: ffffffffffffffff
 </TASK>