------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 16955 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 16955 Comm: syz-executor.3 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31
Code: b2 00 00 00 e8 47 b8 e5 fc 5b 5d c3 cc cc cc cc e8 3b b8 e5 fc c6 05 d1 cb e5 0a 01 90 48 c7 c7 60 3a 1f 8c e8 d7 f5 a7 fc 90 <0f> 0b 90 90 eb d9 e8 1b b8 e5 fc c6 05 ae cb e5 0a 01 90 48 c7 c7
RSP: 0018:ffffc9000a9d7748 EFLAGS: 00010246
RAX: 3b23baeb0408df00 RBX: ffff88802c86a664 RCX: ffff88802ae85a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffffffff81589dd2 R09: fffffbfff1c39918
R10: dffffc0000000000 R11: fffffbfff1c39918 R12: ffff88802c86a620
R13: 0000000000000000 R14: ffff88802c86a664 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556e684938 CR3: 0000000057d32000 CR4: 00000000003506f0
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:4056 [inline]
 netdev_put include/linux/netdevice.h:4073 [inline]
 ax25_release+0x368/0x950 net/ax25/af_ax25.c:1069
 __sock_release net/socket.c:659 [inline]
 sock_close+0xbc/0x240 net/socket.c:1421
 __fput+0x406/0x8b0 fs/file_table.c:422
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa1b/0x27e0 kernel/exit.c:877
 do_group_exit+0x207/0x2c0 kernel/exit.c:1026
 get_signal+0x16a1/0x1740 kernel/signal.c:2911
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7b687dea9
Code: Unable to access opcode bytes at 0x7fb7b687de7f.
RSP: 002b:00007fb7b760a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: 000000000000fee4 RBX: 00007fb7b69abf80 RCX: 00007fb7b687dea9
RDX: 000000000000fee4 RSI: 0000000020847fff RDI: 0000000000000003
RBP: 00007fb7b68ca4a4 R08: 000000002005ffe4 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb7b69abf80 R15: 00007ffc3a4bc6c8
 </TASK>