------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 6095 at lib/refcount.c:31 refcount_warn_saturate+0x1ed/0x210 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 6095 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-05151-g1b294a1f3561 #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 37 96 cf fc 90 0f 0b 90 90 e9 c3 fe ff ff e8 68 45 0d fd c6 05 4d 11 4c 0b 01 90 48 c7 c7 20 28 8f 8b e8 14 96 cf fc 90 <0f> 0b 90 90 e9 a0 fe ff ff 48 89 ef e8 e2 f9 68 fd e9 44 fe ff ff RSP: 0018:ffffc900038cfa10 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90010404000 RDX: 0000000000040000 RSI: ffffffff81505406 RDI: 0000000000000001 RBP: ffff88807e004664 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 00000000000dad60 R12: 1ffff92000719f47 R13: ffff88807e004664 R14: 0000000000000000 R15: ffff88807e004000 FS: 00007fc8cfbde6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000202f0000 CR3: 000000001774e000 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+0x710/0x820 lib/ref_tracker.c:236 netdev_tracker_free include/linux/netdevice.h:4058 [inline] netdev_put include/linux/netdevice.h:4075 [inline] netdev_put include/linux/netdevice.h:4071 [inline] ax25_release+0x33f/0xa40 net/ax25/af_ax25.c:1069 __sock_release+0xb0/0x270 net/socket.c:659 sock_close+0x1c/0x30 net/socket.c:1421 __fput+0x270/0xb80 fs/file_table.c:422 task_work_run+0x14e/0x250 kernel/task_work.c:180 get_signal+0x1ca/0x2710 kernel/signal.c:2683 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310 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+0x14a/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc8d007cee9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc8cfbde0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: fffffffffffffe00 RBX: 00007fc8d01ac050 RCX: 00007fc8d007cee9 RDX: 0000000000000006 RSI: 0000000020003ec0 RDI: 000000000000000c RBP: 00007fc8d00c949e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fc8d01ac050 R15: 00007ffd01a3d7f8