do_filp_open+0x179/0x3c0 fs/namei.c:3603
kasan: GPF could be caused by NULL-ptr deref or user memory access
 do_sys_open+0x296/0x410 fs/open.c:1081
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
general protection fault: 0000 [#1] PREEMPT SMP KASAN
RIP: 0033:0x4179b1
Modules linked in:
RSP: 002b:00007faaed091a20 EFLAGS: 00000293
 ORIG_RAX: 0000000000000002
CPU: 1 PID: 2479 Comm: syz-executor.5 Not tainted 4.14.209-syzkaller #0
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004179b1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RDX: 00007faaed091ae0 RSI: 0000000000000002 RDI: 00007faaed091ae0
task: ffff8880b4aca540 task.stack: ffff88809a370000
RBP: 0000000000000000 R08: 00007faaed091ad8 R09: 0000000000000000
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
R10: 00007faaed091adc R11: 0000000000000293 R12: 0000000000000000
RSP: 0018:ffff88809a377c00 EFLAGS: 00010246
R13: 0000000000000004 R14: 0000000000000004 R15: 0000000020001250
RAX: dffffc0000000000 RBX: ffff88808c429380 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff85985d15 RDI: ffff88808c429440
RBP: ffffed1011885281 R08: 0000000000000000 R09: 00000000000406db
R10: ffff8880b4acae18 R11: ffff8880b4aca540 R12: 0000000000000002
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1101346ef87
FS:  00007ffb9a52d700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004f4690 CR3: 00000000b305b000 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+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
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45deb9
RSP: 002b:00007ffb9a52cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000003b940 RCX: 000000000045deb9
RDX: 0000000000000048 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffde2110c7f R14: 00007ffb9a52d9c0 R15: 000000000118bf2c
Code: ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 cd 06 00 00 4c 8b ab c0 00 00 00 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: ffff88809a377c00
RIP: vhost_del_umem_range drivers/vhost/vhost.c:971 [inline] RSP: ffff88809a377c00
RIP: vhost_process_iotlb_msg drivers/vhost/vhost.c:1042 [inline] RSP: ffff88809a377c00
RIP: vhost_chr_write_iter drivers/vhost/vhost.c:1071 [inline] RSP: ffff88809a377c00
RIP: vhost_chr_write_iter+0x863/0x10f0 drivers/vhost/vhost.c:1055 RSP: ffff88809a377c00
---[ end trace 600dfee721368672 ]---