login: [ 33.2310563] panic: kernel diagnostic assertion "mutex_owned(pipe->pipe_lock)" failed: file "/syzkaller/managers/netbsd/kernel/sys/kern/sys_pipe.c", line 371 [ 33.2352397] cpu1: Begin traceback... [ 33.2394219] vpanic() at netbsd:vpanic+0x214 [ 33.2436087] _GLOBAL__sub_D_65535_0_cpu_configure() at netbsd:_GLOBAL__sub_D_65535_0_cpu_configure [ 33.2561517] pipelock() at netbsd:pipelock+0xb0 [ 33.2686992] pipe_write() at netbsd:pipe_write+0x99 [ 33.2812451] dofilewrite() at netbsd:dofilewrite+0x1b7 [ 33.2938029] sys_write() at netbsd:sys_write+0x78 [ 33.3063385] syscall() at netbsd:syscall+0x32e [ 33.3105193] --- syscall (number 4) --- [ 33.3188846] 72c3d623e02a: [ 33.3188846] cpu1: End traceback... [ 33.3230753] dumping to dev 4,1 (offset=0, size=0): not possible [ 33.3314291] rebooting... SeaBIOS (version 1.8.2-20190122_225043-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 0x000f29c0: 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