SYSC_add_key security/keys/keyctl.c:123 [inline]
 SyS_add_key+0x186/0x370 security/keys/keyctl.c:63
kasan: GPF could be caused by NULL-ptr deref or user memory access
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
general protection fault: 0000 [#1] PREEMPT SMP KASAN
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
Modules linked in:
RIP: 0033:0x45de59
RSP: 002b:00007f3d2d477c78 EFLAGS: 00000246
CPU: 0 PID: 10327 Comm: syz-executor.2 Not tainted 4.14.198-syzkaller #0
 ORIG_RAX: 00000000000000f8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RAX: ffffffffffffffda RBX: 0000000000000740 RCX: 000000000045de59
task: ffff8880a9660140 task.stack: ffff8880687b8000
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000020000000
RIP: 0010:vhost_umem_interval_tree_iter_first drivers/vhost/vhost.c:53 [inline]
RIP: 0010:vhost_del_umem_range drivers/vhost/vhost.c:971 [inline]
RIP: 0010:vhost_process_iotlb_msg drivers/vhost/vhost.c:1042 [inline]
RIP: 0010:vhost_chr_write_iter drivers/vhost/vhost.c:1071 [inline]
RIP: 0010:vhost_chr_write_iter+0x863/0x10f0 drivers/vhost/vhost.c:1055
RBP: 00007f3d2d477ca0 R08: fffffffffffffffc R09: 0000000000000000
RSP: 0018:ffff8880687bfc00 EFLAGS: 00010246
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000005
R13: 00007ffde044623f R14: 00007f3d2d4789c0 R15: 000000000118bf2c
RAX: dffffc0000000000 RBX: ffff88804f745980 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff84e39155 RDI: ffff88804f745a40
RBP: ffffed1009ee8b41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: ffff8880a9660140 R12: 0000000000000002
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1100d0f7f87
FS:  00007f324dc2d700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b1cf93010 CR3: 0000000082c79000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 call_write_iter include/linux/fs.h:1778 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44c/0x630 fs/read_write.c:482
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45de59
RSP: 002b:00007f324dc2cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000003b880 RCX: 000000000045de59
RDX: 0000000000000048 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
CPU: 1 PID: 10343 Comm: syz-executor.3 Not tainted 4.14.198-syzkaller #0
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
R13: 00007fffaced5faf R14: 00007f324dc2d9c0 R15: 000000000118bf2c
Call Trace:
Code: 
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
ff 
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
df 
 should_failslab+0xd6/0x130 mm/failslab.c:32
48 
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc_trace+0x29a/0x3d0 mm/slab.c:3616
89 
 kmalloc include/linux/slab.h:488 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 selinux_key_alloc+0x46/0x1a0 security/selinux/hooks.c:6184
f9 
 security_key_alloc+0x76/0xb0 security/security.c:1669
48 
c1 
 key_alloc+0x6bf/0xf80 security/keys/key.c:314
e9 
03 
 key_create_or_update+0x59f/0xaa0 security/keys/key.c:916
80 
3c 
01 
 SYSC_add_key security/keys/keyctl.c:123 [inline]
 SyS_add_key+0x186/0x370 security/keys/keyctl.c:63
00 
0f 
85 
cd 
06 
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
00 
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
00 
RIP: 0033:0x45de59
4c 
RSP: 002b:00007f3d2d477c78 EFLAGS: 00000246
8b 
 ORIG_RAX: 00000000000000f8
ab 
RAX: ffffffffffffffda RBX: 0000000000000740 RCX: 000000000045de59
c0 
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000020000000
00 
RBP: 00007f3d2d477ca0 R08: fffffffffffffffc R09: 0000000000000000
00 
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000006
00 
R13: 00007ffde044623f R14: 00007f3d2d4789c0 R15: 000000000118bf2c
48 b8 00 00 00 00 00 fc ff df 4c 89 e9 48 c1 e9 03 <80> 3c 01 00 0f 85 96 06 00 00 49 8b 6d 00 48 85 ed 0f 84 e4 03 
RIP: vhost_umem_interval_tree_iter_first drivers/vhost/vhost.c:53 [inline] RSP: ffff8880687bfc00
RIP: vhost_del_umem_range drivers/vhost/vhost.c:971 [inline] RSP: ffff8880687bfc00
RIP: vhost_process_iotlb_msg drivers/vhost/vhost.c:1042 [inline] RSP: ffff8880687bfc00
RIP: vhost_chr_write_iter drivers/vhost/vhost.c:1071 [inline] RSP: ffff8880687bfc00
RIP: vhost_chr_write_iter+0x863/0x10f0 drivers/vhost/vhost.c:1055 RSP: ffff8880687bfc00
---[ end trace 434ecda860b773cd ]---