Hello all, I have a kernel page fault in OpenBSD 5.6 100% reproducible (I think I can reproduce it in older versions too).
I've created an OpenBSD installation in Linux through kvm on a 1GB hard disk with just a root partition (a), by booting the install56.iso cdrom with a command like this: # kvm -smp 1 -m 2048 -boot d -drive \ file=/dev/images/openbsd-5.6,format=raw,cache=none,if=virtio -cdrom /tmp/install56.iso -vnc :0 The system boots fine with a command like this: # kvm -m 2048 -drive file=/dev/images/openbsd,format=raw,cache=none,if=virtio If I then copy it into a 100GB volume: # dd if=/dev/images/openbsd of=/dev/images/tmp1 bs=4M And try to boot it, it still boots fine. I then boot into the VM's rescue disk: > boot bsd.rd and press S to get a shell I mount the root partition and grab growfs program: # mount /dev/sd0a /mnt # cp /mnt/sbin/growfs . # umount /mnt Fix the MBR to use the entire disk: # fdisk -i wd0 And change the disklabel: # disklabel -E sd0 Change the OpenBSD boundaries to cover the whole disk: > b Starting sector: [64] Size ('*' for entire disk):[] * and then grow the root partition to make it 100GB log: > c partition to change size: [] a Then grow the underlying FFS file system: # growfs /dev/sd0a If I then reboot, the ffs driver crashes with errors like this: uvm_fault(0xffffffff81dcddc0, 0xc000068, 0, 2) -> e kernel: page fault trap, code=0 Stopped at ffs_vget+0x115: addb %al, 0(%rcx,%rax,1) ddb> Am I missing something or is this a kernel/growfs bug? Thank you in advance, Nikos Skalkotos