kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 6329 Comm: syz-executor277 Not tainted 4.14.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88809868e100 task.stack: ffff888098758000
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+0x434/0x1030 drivers/vhost/vhost.c:1055
RSP: 0018:ffff88809875fbf0 EFLAGS: 00010246
RAX: 0000000000000002 RBX: 0000000000000002 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880820c0240
RBP: ffff8880820c4948 R08: dffffc0000000000 R09: 0000000000000002
R10: ffff88809875fbf0 R11: ffff88809868e100 R12: 0000000000000000
R13: 0000000000000000 R14: ffffed1010418041 R15: ffff8880820c0180
FS:  000000000093b880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000140 CR3: 0000000089e7c000 CR4: 00000000001406e0
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+0x44e/0x630 fs/read_write.c:482
 vfs_write+0x192/0x4e0 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
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4401a9
RSP: 002b:00007ffc2fc2f558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401a9
RDX: 0000000000000048 RSI: 0000000020000280 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a30
R13: 0000000000401ac0 R14: 0000000000000000 R15: 0000000000000000
Code: ff df 48 89 f9 48 c1 e9 03 80 3c 11 00 0f 85 3e 0b 00 00 4d 8b af c0 00 00 00 48 ba 00 00 00 00 00 fc ff df 4c 89 e9 48 c1 e9 03 <80> 3c 11 00 0f 85 07 0b 00 00 49 8b 6d 00 48 85 ed 0f 84 1f 08 
RIP: vhost_del_umem_range drivers/vhost/vhost.c:971 [inline] RSP: ffff88809875fbf0
RIP: vhost_process_iotlb_msg drivers/vhost/vhost.c:1042 [inline] RSP: ffff88809875fbf0
RIP: vhost_chr_write_iter drivers/vhost/vhost.c:1071 [inline] RSP: ffff88809875fbf0
RIP: vhost_chr_write_iter+0x434/0x1030 drivers/vhost/vhost.c:1055 RSP: ffff88809875fbf0
---[ end trace d03df4dccba657a1 ]---