------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 1 PID: 10511 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Modules linked in: CPU: 1 UID: 0 PID: 10511 Comm: syz.2.1278 Not tainted 6.12.0-rc7-syzkaller-01770-gdd7207838d38 #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 c7 1d d7 fc 5b 5d c3 cc cc cc cc e8 bb 1d d7 fc c6 05 de 6b 49 0b 01 90 48 c7 c7 a0 c9 60 8c e8 17 14 98 fc 90 <0f> 0b 90 90 eb d9 e8 9b 1d d7 fc c6 05 bb 6b 49 0b 01 90 48 c7 c7 RSP: 0018:ffffc90003cc7908 EFLAGS: 00010246 RAX: 9717b378755aa300 RBX: ffff888020ba2654 RCX: 0000000000040000 RDX: ffffc9000c631000 RSI: 0000000000004dc0 RDI: 0000000000004dc1 RBP: 0000000000000004 R08: ffffffff8155e312 R09: fffffbfff1cf9fd0 R10: dffffc0000000000 R11: fffffbfff1cf9fd0 R12: ffff888020ba2610 R13: 0000000000000000 R14: ffff888020ba2654 R15: dffffc0000000000 FS: 00007f59849f66c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbb8d63e050 CR3: 000000005d320000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __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:4156 [inline] netdev_put include/linux/netdevice.h:4173 [inline] ax25_release+0x368/0x950 net/ax25/af_ax25.c:1069 __sock_release net/socket.c:658 [inline] sock_close+0xbc/0x240 net/socket.c:1426 __fput+0x23f/0x880 fs/file_table.c:431 task_work_run+0x24f/0x310 kernel/task_work.c:239 get_signal+0x15e8/0x1740 kernel/signal.c:2691 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: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+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f598657e759 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:00007f59849f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00007f5986736058 RCX: 00007f598657e759 RDX: 0000000020000800 RSI: 00000000000089ed RDI: 0000000000000007 RBP: 00007f59865f175e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f5986736058 R15: 00007fffa855d398