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: 4943 Comm: syz-executor3 Not tainted 4.15.0-rc1-next-20171201+ #57
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: 0000000006e557a1 task.stack: 00000000cb4c3444
RIP: 0010:sidtab_search_core+0x6a/0x320 security/selinux/ss/sidtab.c:88
RSP: 0018:ffff8801c8377940 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffffffff8220ea3d
RDX: 0000000000000001 RSI: ffffc900036f4000 RDI: ffffffff874c8180
RBP: ffff8801c8377970 R08: 0000000000000003 R09: 1ffffffff0d6b133
R10: 0000000000000000 R11: ffffffff8748cd60 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f16cd8de700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f89e09f2320 CR3: 00000001c79e4000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000000000008 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000bb060a
Call Trace:
 sidtab_search+0x1f/0x30 security/selinux/ss/sidtab.c:111
 security_bounded_transition+0xa8/0x4d0 security/selinux/ss/services.c:873
 selinux_setprocattr+0x8d0/0xb50 security/selinux/hooks.c:6043
 security_setprocattr+0x85/0xc0 security/security.c:1264
 proc_pid_attr_write+0x1e6/0x280 fs/proc/base.c:2574
 do_loop_readv_writev fs/read_write.c:676 [inline]
 do_iter_write+0x3d3/0x540 fs/read_write.c:934
 vfs_writev+0x18a/0x340 fs/read_write.c:977
 do_writev+0xfc/0x2a0 fs/read_write.c:1012
 SYSC_writev fs/read_write.c:1085 [inline]
 SyS_writev+0x27/0x30 fs/read_write.c:1082
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x4529d9
RSP: 002b:00007f16cd8ddc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 00000000004529d9
RDX: 0000000000000001 RSI: 0000000020b97000 RDI: 0000000000000016
RBP: 00000000000005ab R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f58a8
R13: 00000000ffffffff R14: 00007f16cd8de6d4 R15: 0000000000000000
Code: ea 03 41 83 e4 7f 80 3c 02 00 0f 85 7d 02 00 00 4c 8b 33 4d 63 e4 48 b8 00 00 00 00 00 fc ff df 4b 8d 1c e6 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 41 02 00 00 48 8b 1b 48 85 db 0f 84 8b 00 00 
RIP: sidtab_search_core+0x6a/0x320 security/selinux/ss/sidtab.c:88 RSP: ffff8801c8377940
---[ end trace 1bb1fb9a9fe5ea38 ]---