RAX: ffffffffffffffda RBX: 00007fee96cd86d4 RCX: 0000000000455ba9
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000020000000
RBP: 000000000072bea0 R08: fffffffffffffffe R09: 0000000000000000
R10: 0000000000000311 R11: 0000000000000246 R12: 0000000000000013
R13: 00000000004bb603 R14: 00000000004c83a0 R15: 000000000000000b
BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
PGD 8000000090a17067 P4D 8000000090a17067 PUD 90a14067 PMD 0 
Oops: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 2867 Comm: syz-executor6 Not tainted 4.17.0+ #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:map_vm_area+0x69/0x1f0 mm/vmalloc.c:1353
RSP: 0018:ffff880094a3f8b8 EFLAGS: 00010046
RAX: ffffffff81af394c RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc900031a5000 RSI: 0000000000027309 RDI: 000000000002730a
RBP: ffff880094a3f930 R08: 00000000010000c0 R09: ffff88021fc39050
R10: 0000000000000002 R11: ffffffff81351e50 R12: ffff88021fc39050
R13: 0000000000000000 R14: 0000000000000008 R15: 0000000000000000
FS:  00007fee96cd8700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 0000000093654000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 kmsan_vmap+0x124/0x1e0 mm/kmsan/kmsan.c:921
 vmap+0x3b2/0x4b0 mm/vmalloc.c:1661
 big_key_alloc_buffer+0x638/0xa30 security/keys/big_key.c:188
 big_key_preparse+0x20a/0xed0 security/keys/big_key.c:228
 key_create_or_update+0x7a6/0x1a80 security/keys/key.c:849
 __do_sys_add_key security/keys/keyctl.c:122 [inline]
 __se_sys_add_key+0x741/0x980 security/keys/keyctl.c:62
 __x64_sys_add_key+0x15d/0x1b0 security/keys/keyctl.c:62
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x455ba9
RSP: 002b:00007fee96cd7c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000f8
RAX: ffffffffffffffda RBX: 00007fee96cd86d4 RCX: 0000000000455ba9
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000020000000
RBP: 000000000072bea0 R08: fffffffffffffffe R09: 0000000000000000
R10: 0000000000000311 R11: 0000000000000246 R12: 0000000000000013
R13: 00000000004bb603 R14: 00000000004c83a0 R15: 000000000000000b
Code: 24 08 48 89 45 a0 41 8b 84 24 90 0c 00 00 89 45 cc 45 8b bc 24 88 0c 00 00 e8 34 16 b6 ff 4d 8d 75 08 48 85 db 0f 85 5b 01 00 00 <49> 8b 45 08 48 89 45 a8 4c 89 f7 e8 e7 c5 0e 00 4d 8d 75 18 48 
RIP: map_vm_area+0x69/0x1f0 mm/vmalloc.c:1353 RSP: ffff880094a3f8b8
CR2: 0000000000000008
---[ end trace a6c8220e8ac7b002 ]---