------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 14698 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Modules linked in: CPU: 0 UID: 0 PID: 14698 Comm: syz.1.2549 Not tainted 6.13.0-rc2-syzkaller-00163-g954a2b40719a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Code: b2 00 00 00 e8 87 43 dd fc 5b 5d c3 cc cc cc cc e8 7b 43 dd fc c6 05 9d 83 41 0b 01 90 48 c7 c7 40 53 5f 8c e8 d7 ec 9d fc 90 <0f> 0b 90 90 eb d9 e8 5b 43 dd fc c6 05 7a 83 41 0b 01 90 48 c7 c7 RSP: 0018:ffffc90002fc79a8 EFLAGS: 00010246 RAX: c94a828aa8244b00 RBX: ffff88801df4064c RCX: ffff8880274b5a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000004 R08: ffffffff81600a42 R09: 1ffff920005f8ed0 R10: dffffc0000000000 R11: fffff520005f8ed1 R12: ffff88801df40608 R13: 0000000000000000 R14: ffff88801df4064c R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000608e8000 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:640 [inline] sock_close+0xbc/0x240 net/socket.c:1408 __fput+0x23c/0xa50 fs/file_table.c:450 task_work_run+0x24f/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:938 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232 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: 0033:0x7f2687785d29 Code: Unable to access opcode bytes at 0x7f2687785cff. RSP: 002b:00007fffe6f831f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007f2687785d29 RDX: 00007f268773d347 RSI: 0000000000000000 RDI: 000000000000000b RBP: 00007f268797624c R08: 00007fffe6f83687 R09: 000000000000000b R10: 00007f2687975fa0 R11: 0000000000000246 R12: 0000000000000003 R13: 00007f2687976240 R14: 0000000000000003 R15: 0000000000000183