I'm pretty sure that Linux does not manufacture disklabels that are compatible with OpenBSD. And visa versa! And if you're creating/mounting filesystems you are *not* an unprivileged user and you *definitely* can crash systems if you're not careful. :-)
That said, if you can provide details on the crash this particular one may be avoidable. .... Ken On 26 April 2014 11:41, Z <z...@odm.li> wrote: > Hi, I've never used mailing lists so please correct mistakes and forgive > me if this is not a bug, but as I understand it you should not be able > to crash the kernel as an unpriviledged user. > > In brief, I was trying to format a usb stick as ext2, and was going back > and forth between linux and openbsd to get it working on both (I'm > fairly new to openbsd). The disklabel I ended up with is pasted below. > It seems misconfigured, but is the result of using (on arch linux) > cfdisk to delete all partitions and create a new one, and then mkfs.ext2 > to create the filesystem. Previously I had created a working ext2 > partition on openbsd, but linux could not read it. > > I can mount this disk fine, but when I go to list the mount directory > with ls -l, the whole computer crashes. I've verified this is true many > times both at the console and also when ssh'd into the pc. It just > freezes and accepts no input. The ssh connection hangs. Nothing except a > physical poweroff does anything. > > I should point out that the usb stick can be read and written to > normally on linux, so it doesn't seem to be a physical hardware problem. > I should also say that the method I'm using to mount the stick as a non > priviledged user seems a little fishy - namely chmodding 660 /dev/sd1* > and making my user a member of the operators group. Or perhaps this is > the normal way on OpenBSD, I don't know. > > I'm using 5.4 on an IBM Thinkpad T60. I'm happy to post a full > dmesg/usbdevs/pcidump etc if it helps, but thought it might be too much > for a first post. > >> disklabel sd1 > # /dev/rsd1c: > type: SCSI > disk: SCSI disk > label: Cruzer Blade > duid: 704ebc363be23fd4 > flags: > bytes/sector: 512 > sectors/track: 63 > tracks/cylinder: 255 > sectors/cylinder: 16065 > cylinders: 973 > total sectors: 15633408 > boundstart: 0 > boundend: 15633408 > drivedata: 0 > > 16 partitions: > # size offset fstype [fsize bsize cpg] > a: 15633408 0 ext2fs # > /home/z/mounts/key > c: 15633408 0 ISO9660 > >> disklabel -d sd1 > # /dev/rsd1c: > type: SCSI > disk: SCSI disk > label: Cruzer Blade > duid: 0000000000000000 > flags: > bytes/sector: 512 > sectors/track: 63 > tracks/cylinder: 255 > sectors/cylinder: 16065 > cylinders: 973 > total sectors: 15633408 > boundstart: 0 > boundend: 15633408 > drivedata: 0 > > 16 partitions: > # size offset fstype [fsize bsize cpg] > c: 15633408 0 unused > i: 15633346 62 ext2fs > > > PS - excuse the email username "z" - I haven't got around to properly > configuring smtpd yet.
