ax25_connect(): syz.6.4719 uses autobind, please contact jreuter@yaina.de
------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 30299 at lib/refcount.c:31 refcount_warn_saturate+0x147/0x1b0 lib/refcount.c:31
Modules linked in:
CPU: 0 PID: 30299 Comm: syz.6.4719 Not tainted 6.6.95-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:refcount_warn_saturate+0x147/0x1b0 lib/refcount.c:31
Code: 0a 01 48 c7 c7 20 12 fc 8a e8 75 95 30 fd 0f 0b eb a8 e8 fc 30 66 fd c6 05 6a f6 14 0a 01 48 c7 c7 40 13 fc 8a e8 59 95 30 fd <0f> 0b eb 8c e8 e0 30 66 fd c6 05 4b f6 14 0a 01 48 c7 c7 20 12 fc
RSP: 0018:ffffc9000531f928 EFLAGS: 00010246
RAX: 1d6dbdf28cca1000 RBX: 0000000000000004 RCX: 0000000000080000
RDX: ffffc9000cbe9000 RSI: 0000000000013c39 RDI: 0000000000013c3a
RBP: ffffc9000531fa80 R08: ffffc9000531f527 R09: 1ffff92000a63ea4
R10: dffffc0000000000 R11: fffff52000a63ea5 R12: ffff88807da925b8
R13: dffffc0000000000 R14: ffff88807da925fc R15: 0000000000000001
FS:  00007f1b6756d6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e11eff8 CR3: 000000002e2c6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_dec include/linux/refcount.h:344 [inline]
 refcount_dec include/linux/refcount.h:359 [inline]
 ref_tracker_free+0x698/0x7d0 lib/ref_tracker.c:236
 netdev_tracker_free include/linux/netdevice.h:4130 [inline]
 netdev_put include/linux/netdevice.h:4147 [inline]
 ax25_release+0x356/0x930 net/ax25/af_ax25.c:1080
 __sock_release net/socket.c:659 [inline]
 sock_close+0xbd/0x230 net/socket.c:1421
 __fput+0x234/0x970 fs/file_table.c:384
 task_work_run+0x1ce/0x250 kernel/task_work.c:239
 get_signal+0x1235/0x1400 kernel/signal.c:2678
 arch_do_signal_or_restart+0x96/0x780 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1b6678e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1b6756d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffe00 RBX: 00007f1b669b5fa0 RCX: 00007f1b6678e929
RDX: 0000000000000048 RSI: 00002000000001c0 RDI: 000000000000000b
RBP: 00007f1b66810b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1b669b5fa0 R15: 00007ffc05be9948
 </TASK>