------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 21204 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 21204 Comm: syz-executor.3 Not tainted 6.10.0-rc2-syzkaller-00438-g62b5bf58b928 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Code: b2 00 00 00 e8 f7 be e6 fc 5b 5d c3 cc cc cc cc e8 eb be e6 fc c6 05 4b 60 e8 0a 01 90 48 c7 c7 20 a2 1f 8c e8 67 ed a8 fc 90 <0f> 0b 90 90 eb d9 e8 cb be e6 fc c6 05 28 60 e8 0a 01 90 48 c7 c7 RSP: 0018:ffffc9000cd3f748 EFLAGS: 00010246 RAX: 7706b72d2a95a600 RBX: ffff88802cb20664 RCX: ffff888029e73c00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000004 R08: ffffffff815857a2 R09: fffffbfff1c39994 R10: dffffc0000000000 R11: fffffbfff1c39994 R12: ffff88802cb20620 R13: 0000000000000000 R14: ffff88802cb20664 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f73ede3a440 CR3: 0000000028e5e000 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:4058 [inline] netdev_put include/linux/netdevice.h:4075 [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+0xa27/0x27e0 kernel/exit.c:874 do_group_exit+0x207/0x2c0 kernel/exit.c:1023 get_signal+0x16a1/0x1740 kernel/signal.c:2909 arch_do_signal_or_restart+0x96/0x860 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+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: 0033:0x7f52d4a7cf69 Code: Unable to access opcode bytes at 0x7f52d4a7cf3f. RSP: 002b:00007f52d575b178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f52d4bb3f88 RCX: 00007f52d4a7cf69 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f52d4bb3f88 RBP: 00007f52d4bb3f80 R08: 00007f52d575b6c0 R09: 00007f52d575b6c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f52d4bb3f8c R13: 000000000000000b R14: 00007ffcd16ea480 R15: 00007ffcd16ea568