audit: type=1400 audit(1520952953.373:7): avc:  denied  { map } for  pid=4189 comm="syzkaller923084" path="/root/syzkaller923084246" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
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:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 4189 Comm: syzkaller923084 Not tainted 4.16.0-rc5+ #262
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:ffff8801bab97c78 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028
RBP: ffff8801bab97c90 R08: 0000000000000000 R09: 1ffff10037572f0b
R10: ffff8801bab97820 R11: 0000000000000001 R12: ffff8801ba8627d2
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bab97d08
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000a06c840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000b91018 CR3: 00000001bd5b9006 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_32_irqs_on arch/x86/entry/common.c:330 [inline]
 do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f43c99
RSP: 002b:00000000ffe3244c EFLAGS: 00000217 ORIG_RAX: 0000000000000175
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 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: ffff8801bab97c78
---[ end trace 0fe025fe74196ee1 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..