------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 1 PID: 17938 at lib/refcount.c:31 refcount_warn_saturate+0x1ed/0x210 lib/refcount.c:31 Modules linked in: CPU: 1 PID: 17938 Comm: syz-executor.3 Not tainted 6.9.0-rc7-syzkaller-00056-g45db3ab70092 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:refcount_warn_saturate+0x1ed/0x210 lib/refcount.c:31 Code: 8b e8 67 ad d0 fc 90 0f 0b 90 90 e9 c3 fe ff ff e8 28 4b 0e fd c6 05 dd 06 29 0b 01 90 48 c7 c7 00 23 8f 8b e8 44 ad d0 fc 90 <0f> 0b 90 90 e9 a0 fe ff ff 48 89 ef e8 f2 42 6a fd e9 44 fe ff ff RSP: 0018:ffffc9000d6e7cb0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81517119 RDX: ffff88804fa61e00 RSI: ffffffff81517126 RDI: 0000000000000001 RBP: ffff88807e12e664 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000002 R12: 1ffff92001adcf9b R13: ffff88807e12e664 R14: 0000000000000000 R15: ffff88807e12e000 FS: 000055557c448480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4040297ffc CR3: 0000000060686000 CR4: 0000000000350ef0 Call Trace: __refcount_dec include/linux/refcount.h:336 [inline] refcount_dec include/linux/refcount.h:351 [inline] ref_tracker_free+0x710/0x820 lib/ref_tracker.c:236 netdev_tracker_free include/linux/netdevice.h:4084 [inline] netdev_put include/linux/netdevice.h:4101 [inline] netdev_put include/linux/netdevice.h:4097 [inline] ax25_release+0x33f/0xa40 net/ax25/af_ax25.c:1069 __sock_release+0xb3/0x270 net/socket.c:659 sock_close+0x1c/0x30 net/socket.c:1421 __fput+0x273/0xb80 fs/file_table.c:422 __fput_sync+0x47/0x50 fs/file_table.c:507 __do_sys_close fs/open.c:1556 [inline] __se_sys_close fs/open.c:1541 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1541 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0aef47cc5a Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007fffdab3c250 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f0aef47cc5a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f0aef5ad980 R08: 0000001b32920000 R09: 000000000000004a R10: 000000008adcbadd R11: 0000000000000293 R12: 00000000000ef78d R13: 00007f0aef5abf8c R14: 00007fffdab3c350 R15: 0000000000000032