assert failed: vp->v_type == VREG || vp->v_type == VDIR

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: dc893675b200 Hook spi.
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17d932e0c00000
dashboard link: https://syzkaller.appspot.com/bug?extid=c5eaef5a8af535c3b217

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c5eaef...@syzkaller.appspotmail.com

login: [ 42.3266539] panic: kernel diagnostic assertion "vp->v_type ==
VREG || vp->v_type == VDIR" failed:
file "/syzkaller/managers/netbsd/kernel/sys/ufs/ufs/ufs_readwrite.c", line
104
[ 42.3266539] cpu1: Begin traceback...
[ 42.3266539] vpanic() at netbsd:vpanic+0x214
[ 42.3391614] _GLOBAL__sub_D_65535_0_cpu_configure() at
netbsd:_GLOBAL__sub_D_65535_0_cpu_configure
[ 42.3516649] ffs_read() at netbsd:ffs_read+0x2a7
[ 42.3641693] VOP_READ() at netbsd:VOP_READ+0xc3
[ 42.3766732] vn_read() at netbsd:vn_read+0xd7
[ 42.3891786] do_filereadv.part.0() at netbsd:do_filereadv.part.0+0x333
[ 42.4016825] sys___syscall() at netbsd:sys___syscall+0xe2
[ 42.4141854] syscall() at netbsd:syscall+0x30e
[ 42.4266908] --- syscall (number 198) ---
[ 42.4391962] 7da76d03f4aa:
[ 42.4391962] cpu1: End traceback...

[ 42.4391962] dumping to dev 4,1 (offset=0, size=0): not possible
[ 42.4517028] rebooting...
SeaBIOS (version 1.8.2-20181029_212248-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
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/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | WARNING: couldn't
open /var/db/entropy-file
WARNING: 1 module failed to load


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
syzbot.

[syzbot]

syzbot has found a reproducer for the following crash on:

HEAD commit: dc893675b200 Hook spi.
git tree: netbsd

console output: https://syzkaller.appspot.com/x/log.txt?x=103e8a70c00000
dashboard link: https://syzkaller.appspot.com/bug?extid=c5eaef5a8af535c3b217
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14c12500c00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15092782c00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c5eaef...@syzkaller.appspotmail.com

login: [ 36.6383465] panic: kernel diagnostic assertion "vp->v_type ==

VREG || vp->v_type == VDIR" failed:
file "/syzkaller/managers/netbsd/kernel/sys/ufs/ufs/ufs_readwrite.c", line
104

[ 36.6383465] cpu1: Begin traceback...
[ 36.6383465] vpanic() at netbsd:vpanic+0x214
[ 36.6508487] _GLOBAL__sub_D_65535_0_cpu_configure() at
netbsd:_GLOBAL__sub_D_65535_0_cpu_configure
[ 36.6633507] ffs_read() at netbsd:ffs_read+0x2a7
[ 36.6758503] VOP_READ() at netbsd:VOP_READ+0xc3
[ 36.6883512] vn_read() at netbsd:vn_read+0xd7
[ 36.7008523] do_filereadv.part.0() at netbsd:do_filereadv.part.0+0x333
[ 36.7133512] sys_syscall() at netbsd:sys_syscall+0xe2
[ 36.7258510] syscall() at netbsd:syscall+0x30e
[ 36.7258510] --- syscall (number 0) ---
[ 36.7383555] 7c9ca843f4ca:
[ 36.7383555] cpu1: End traceback...

[ 36.7383555] dumping to dev 4,1 (offset=0, size=0): not possible
[ 36.7508522] rebooting...