------------[ cut here ]------------
refcount_t: increment on 0; use-after-free.
WARNING: CPU: 0 PID: 8763 at lib/refcount.c:153 refcount_inc+0x5d/0x70 lib/refcount.c:153
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8763 Comm: syz-executor571 Not tainted 4.18.0-rc7+ #168
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:refcount_inc+0x5d/0x70 lib/refcount.c:153
Code: 1d d3 c5 25 05 31 ff 89 de e8 bf 5b 1c fe 84 db 75 df e8 e6 5a 1c fe 48 c7 c7 e0 4e 3a 87 c6 05 b3 c5 25 05 01 e8 33 76 e7 fd <0f> 0b eb c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 
RSP: 0018:ffff8801ae717af8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81632481 RDI: ffff8801ae7177d0
RBP: ffff8801ae717b00 R08: ffff8801aec1e000 R09: fffffbfff0ff1230
R10: fffffbfff0ff1230 R11: ffffffff87f89183 R12: 00000000000000ff
R13: dffffc0000000000 R14: 00000000000000ff R15: ffff8801ae717d17
 llc_sap_hold include/net/llc.h:116 [inline]
 llc_sap_find+0x1ec/0x2a0 net/llc/llc_core.c:77
 llc_ui_bind+0x6c7/0xf10 net/llc/af_llc.c:362
 __sys_bind+0x331/0x440 net/socket.c:1500
 __do_sys_bind net/socket.c:1511 [inline]
 __se_sys_bind net/socket.c:1509 [inline]
 __x64_sys_bind+0x73/0xb0 net/socket.c:1509
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x445d59
Code: e8 ac e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 fb 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f011b7eedb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00000000006dac38 RCX: 0000000000445d59
RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00000000006dac30 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac3c
R13: 00007ffd1a26a9bf R14: 00007f011b7ef9c0 R15: 0000000000000001
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..