[ 1082.0649203] panic: kernel diagnostic assertion "vp->v_type == VREG" failed: file "/syzkaller/managers/netbsd/kernel/sys/ufs/ufs/ufs_readwrite.c", line 292 
[ 1082.0890094] cpu0: Begin traceback...
[ 1082.0890094] WARNING: SPL NOT LOWERED ON SYSCALL 0 3 EXIT d8v9pa01ni0c70() 6 
a[
 1082.0982998] t netbsd:vpanic+0x214
[ 1082.0982998] _GLOBAL__sub_D_65535_0_cpu_configure() at netbsdWA:R_NGILONBG:AL S_P_sLu bN_OTD _6LO5W53E5RE_0D _cONpu T_RcAoPn fEiXgIurTe 6
[
 1082.0982998]  0
[ 1082.0982998] WARNING: SPLf fNsO_T wLrOitWeE(RE)D  aOt N TRAP EXITne 6t bs0
d
[ [1 100882.2.0098928299998]8 ] :fWfARsN_IwNrGit:e S+0PLx6 NbOaT
[
 1082.0982998]  LOWERED ON TRAP EXIT 6 0
[ 108[2. 01098822.990898]2 W9A9R8]NI NVGO:P_ SWPRLI TEN(OT)  LatOW ERED ON SYSnCetAbLsLd :0 VO-1P_3W94R8I7T3E+60 Ex1X2ITc
 [
 1082.0982998] 0 7
[ 1082.0982998] vn_write() at netbsd:vn_write+0x167
[ 1082.0982998] dofilewrite() at netbsd:dofilewrite+0x1b7
[ 1082.0982998] sys_write() at netbsd:sys_write+0x78
[ 1082.0982998] sys___syscall() at netbsd:sys___syscall+W0ARxeNI2
N
[ 1082.0982998] G: SPL NOT LOWERED ON TRAP EXIT 6 0
[ 1082.09829[9 81] 0W82AR.N0I98N2G:9 9S8P]L  sNyOsTca lLOlW(E)R EaDt  ON TRAP EXIT 6 0
[
[  10180822.0.099828929998]8]  neWAtbRNsdI:NGs:y scall+0SPx3L2 eN
O[
 [1 0108282.0.9098282999898]] T - -LO-W EsyRsEDca lONl  T(RnAumPb eErXI 1T 968 )0 
-
[ [ 11008282..00998282999988]]  -W-A
[
 1082.0982998] RNING: 7S4P54Lf NdOa3T fL4aOWa:E
R
[ [1 1008282.0.098982299998]8]  EDc puON0 :S EYnSCd AtLLr ac0 e-ba13ck9.48.7.3
[ 1
0
[8 2.10098282.0999882] 969 8E]X IduT m0pi 7ng
[ 1082.0982998]  to dev 4,1 (offset=0, size=0): not possible
[ 1082.0982998] rebooting...
SeaBIOS (version 1.8.2-20190204_181744-google)
Total RAM Size = 0x00000001e0000000 = 7680 MiB
CPUs found: 2     Max CPUs supported: 2
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f2a00: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Booting from Hard Disk 0...

>> NetBSD/x86 BIOS Boot, Revision 5.10 (Tue Jul 17 14:59:51 UTC 2018) (from NetBSD 8.0)
>> Memory: 639/3144640 k

     1. Boot normally
     2. Boot single user
     3. Disable ACPI
     4. Disable ACPI and SMP
     5. Drop to boot prompt