------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 1 PID: 5087 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Modules linked in: CPU: 1 PID: 5087 Comm: syz-executor294 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Code: b2 00 00 00 e8 47 b8 e5 fc 5b 5d c3 cc cc cc cc e8 3b b8 e5 fc c6 05 d1 cb e5 0a 01 90 48 c7 c7 60 3a 1f 8c e8 d7 f5 a7 fc 90 <0f> 0b 90 90 eb d9 e8 1b b8 e5 fc c6 05 ae cb e5 0a 01 90 48 c7 c7 RSP: 0018:ffffc90002f9f9c8 EFLAGS: 00010246 RAX: 71ff5e458a17b200 RBX: ffff8880555aa664 RCX: ffff8880296bbc00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000004 R08: ffffffff81589dd2 R09: fffffbfff1c39918 R10: dffffc0000000000 R11: fffffbfff1c39918 R12: ffff8880555aa620 R13: 0000000000000000 R14: ffff8880555aa664 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8e776080f0 CR3: 000000000e132000 CR4: 00000000003506f0 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:4056 [inline] netdev_put include/linux/netdevice.h:4073 [inline] ax25_release+0x368/0x950 net/ax25/af_ax25.c:1069 __sock_release net/socket.c:659 [inline] sock_close+0xbc/0x240 net/socket.c:1421 __fput+0x406/0x8b0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa1b/0x27e0 kernel/exit.c:877 do_group_exit+0x207/0x2c0 kernel/exit.c:1026 __do_sys_exit_group kernel/exit.c:1037 [inline] __se_sys_exit_group kernel/exit.c:1035 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1035 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8e7758ce39 Code: Unable to access opcode bytes at 0x7f8e7758ce0f. RSP: 002b:00007ffc9d96f748 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8e7758ce39 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 00007f8e77607290 R08: ffffffffffffffb8 R09: 00007ffc9d96f968 R10: 00000000200002c0 R11: 0000000000000246 R12: 00007f8e77607290 R13: 0000000000000000 R14: 00007f8e77607ce0 R15: 00007f8e7755ec00