ax25_connect(): syz.1.5054 uses autobind, please contact jreuter@yaina.de
------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 20374 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31
Modules linked in:
CPU: 0 UID: 0 PID: 20374 Comm: syz.1.5054 Not tainted 6.14.0-rc5-syzkaller-01064-g2525e16a2bae #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31
Code: b2 00 00 00 e8 c7 64 cc fc 5b 5d c3 cc cc cc cc e8 bb 64 cc fc c6 05 0a bd 31 0b 01 90 48 c7 c7 80 b3 80 8c e8 27 21 8c fc 90 <0f> 0b 90 90 eb d9 e8 9b 64 cc fc c6 05 e7 bc 31 0b 01 90 48 c7 c7
RSP: 0018:ffffc90003e5f488 EFLAGS: 00010246
RAX: 1cd1608fce1a6b00 RBX: ffff88807ccc064c RCX: 0000000000080000
RDX: ffffc9000fd09000 RSI: 00000000000098ef RDI: 00000000000098f0
RBP: 0000000000000004 R08: ffffffff81818e32 R09: fffffbfff1d3a67c
R10: dffffc0000000000 R11: fffffbfff1d3a67c R12: ffff88807ccc0608
R13: 0000000000000000 R14: ffff88807ccc064c R15: dffffc0000000000
FS:  00007f0c181516c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd4ab2c518 CR3: 000000004812a000 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:4410 [inline]
 netdev_put include/linux/netdevice.h:4427 [inline]
 ax25_kill_by_device net/ax25/af_ax25.c:105 [inline]
 ax25_device_event+0x334/0x600 net/ax25/af_ax25.c:146
 notifier_call_chain+0x1a5/0x3f0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2243 [inline]
 call_netdevice_notifiers net/core/dev.c:2257 [inline]
 dev_close_many+0x33c/0x4c0 net/core/dev.c:1745
 netif_close+0x1c0/0x2c0 net/core/dev.c:1758
 dev_close+0x137/0x280 net/core/dev_api.c:208
 bpq_device_event+0x372/0x8d0 drivers/net/hamradio/bpqether.c:547
 notifier_call_chain+0x1a5/0x3f0 kernel/notifier.c:85
 __dev_notify_flags+0x207/0x400
 netif_change_flags+0xf0/0x1a0 net/core/dev.c:9442
 dev_change_flags+0x146/0x270 net/core/dev_api.c:66
 dev_ifsioc+0x791/0x1130 net/core/dev_ioctl.c:565
 dev_ioctl+0x719/0x1340 net/core/dev_ioctl.c:839
 sock_do_ioctl+0x240/0x460 net/socket.c:1204
 sock_ioctl+0x626/0x8e0 net/socket.c:1309
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0c1738d169
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:00007f0c18151038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0c175a5fa0 RCX: 00007f0c1738d169
RDX: 0000400000000700 RSI: 0000000000008914 RDI: 0000000000000007
RBP: 00007f0c1740e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0c175a5fa0 R15: 00007ffd0bbefd58
 </TASK>