getname+0x1a/0x20 fs/namei.c:209
 do_sys_open+0x1e7/0x430 fs/open.c:1078
kobject: 'kvm' (ffff888219fb2510): kobject_uevent_env
 SYSC_open fs/open.c:1102 [inline]
 SyS_open+0x2d/0x40 fs/open.c:1097
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
general protection fault: 0000 [#1] PREEMPT SMP KASAN
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
Modules linked in:
RIP: 0033:0x413711
RSP: 002b:00007f03286eda80 EFLAGS: 00000293
CPU: 1 PID: 29977 Comm: syz-executor.2 Not tainted 4.14.135 #31
 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 0000000000413711
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RDX: 00007f03286edb0a RSI: 0000000000000002 RDI: 00007f03286edb00
task: ffff88809090e480 task.stack: ffff88805d610000
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000a
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+0x4a9/0x1260 drivers/vhost/vhost.c:1055
R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000004
RSP: 0018:ffff88805d617b90 EFLAGS: 00010246
R13: 00000000004c8a7f R14: 00000000004df8b8 R15: 0000000000000003
kobject: 'loop5' (ffff8880a4b322a0): kobject_uevent_env
RAX: 0000000000000002 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff84a7b299 RDI: ffff88802c00ca00
RBP: ffff88805d617cb0 R08: dffffc0000000000 R09: ffffffff88c85d70
R10: ffff88805d617b80 R11: ffff88809090e480 R12: ffff88802c011108
R13: 0000000000000000 R14: ffff88802c00c940 R15: 0000000000000000
FS:  00007faaa27b8700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
kobject: 'loop5' (ffff8880a4b322a0): fill_kobj_path: path = '/devices/virtual/block/loop5'
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000711934 CR3: 00000000991ac000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vhost_net_chr_write_iter+0x59/0x70 drivers/vhost/net.c:1365
REISERFS warning (device loop5): super-6502 reiserfs_getopt: unknown mount option ""
 call_write_iter include/linux/fs.h:1777 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x4a7/0x6b0 fs/read_write.c:482
 vfs_write+0x198/0x500 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xfd/0x230 fs/read_write.c:582
kobject: 'loop4' (ffff8880a4afa220): fill_kobj_path: path = '/devices/virtual/block/loop4'
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
kobject: 'loop3' (ffff8880a4a801a0): kobject_uevent_env
RIP: 0033:0x459829
RSP: 002b:00007faaa27b7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000000068 RSI: 0000000020000580 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
kobject: 'loop3' (ffff8880a4a801a0): fill_kobj_path: path = '/devices/virtual/block/loop3'
R10: 0000000000000000 R11: 0000000000000246 R12: 00007faaa27b86d4
R13: 00000000004c9b18 R14: 00000000004e1190 R15: 00000000ffffffff
Code: ff 
kobject: 'kvm' (ffff888219fb2510): fill_kobj_path: path = '/devices/virtual/misc/kvm'
ff 48 89 f9 48 c1 e9 03 80 3c 11 00 0f 85 9c 0c 00 00 49 8b 8e c0 00 00 00 48 ba 00 00 00 00 00 fc ff df 49 89 cf 48 c1 e9 03 <80> 3c 11 00 0f 85 61 0c 00 00 4d 8b 27 4d 85 e4 0f 84 27 09 00 
RIP: vhost_del_umem_range drivers/vhost/vhost.c:971 [inline] RSP: ffff88805d617b90
RIP: vhost_process_iotlb_msg drivers/vhost/vhost.c:1042 [inline] RSP: ffff88805d617b90
RIP: vhost_chr_write_iter drivers/vhost/vhost.c:1071 [inline] RSP: ffff88805d617b90
RIP: vhost_chr_write_iter+0x4a9/0x1260 drivers/vhost/vhost.c:1055 RSP: ffff88805d617b90
kobject: 'loop4' (ffff8880a4afa220): kobject_uevent_env
---[ end trace 0dade757fa4be2ae ]---