syzbot has found a reproducer for the following crash on:
HEAD commit: d2740109 Undo previous
git tree: netbsd
console output:
https://syzkaller.appspot.com/x/log.txt?x=14f19dc8a00000
dashboard link:
https://syzkaller.appspot.com/bug?extid=77a6e06ea923e1eebe81
syz repro:
https://syzkaller.appspot.com/x/repro.syz?x=13baf874a00000
[ 36.0729359] panic: lock error: Mutex: mutex_vector_exit,761: assertion
failed: MUTEX_OWNER(mtx->mtx_owner) == curthread: lock 0xffffc60012f72840
cpu 1 lwp 0xffffc60012fea1c0
[ 36.0929623] cpu1: Begin traceback...
[ 36.0929623] vpanic() at netbsd:vpanic+0x214
[ 36.1029793] snprintf() at netbsd:snprintf
[ 36.1129928] lockdebug_abort() at netbsd:lockdebug_abort+0x153
[ 36.1230065] mutex_vector_exit() at netbsd:mutex_vector_exit+0x1bc
[ 36.1330193] do_sys_accept() at netbsd:do_sys_accept+0x346
[ 36.1430379] sys_accept() at netbsd:sys_accept+0xac
[ 36.1530480] sys___syscall() at netbsd:sys___syscall+0xe2
[ 36.1730778] syscall() at netbsd:syscall+0x348
[ 36.1730778] --- syscall (number 198) ---
[ 36.1830888] 77be1803f4aa:
[ 36.1830888] cpu1: End traceback...
[ 36.1830888] dumping to dev 4,1 (offset=0, size=0): not possible
[ 36.1931003] rebooting...
SeaBIOS (version 1.8.2-20190308_060531-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 0x000f29d0: 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
| / - \ | / - 41277408\ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ |
/ - \ | / - \ |