kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
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Modules linked in:
CPU: 0 PID: 4262 Comm: syzkaller387058 Not tainted 4.16.0-rc3+ #331
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kernel_sock_shutdown+0x29/0x70 net/socket.c:3250
RSP: 0018:ffff8801afa47cc8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028
RBP: ffff8801afa47ce0 R08: 0000000000000000 R09: 1ffff10035f48f15
R10: ffff8801afa47870 R11: 0000000000000001 R12: ffff8801cd021012
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801afa47d58
FS:  00007f743aab8700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f743a8e9e78 CR3: 00000001b027c002 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 smc_shutdown+0x3ed/0x540 net/smc/af_smc.c:1268
 SYSC_shutdown net/socket.c:1901 [inline]
 SyS_shutdown+0x137/0x290 net/socket.c:1892
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x445d49
RSP: 002b:00007f743aab7db8 EFLAGS: 00000297 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445d49
RDX: 0000000000445d49 RSI: 0000000000000000 RDI: 0000000000000011
RBP: 00000000006dbc38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000
R13: 00007ffc4298643f R14: 00007f743aab89c0 R15: 0000000000000006
Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 11 fd 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 
RIP: kernel_sock_shutdown+0x29/0x70 net/socket.c:3250 RSP: ffff8801afa47cc8
---[ end trace d2850b0142b84946 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..