Created attachment 510953 [details] output of parted crash Description of problem: Attempting to create a gpt label on /dev/vda results core dump. Sounds like a big deal but in fact /dev/vda should not exist which may be a separate kernel bug. I discovered due to a errant "pre" section in my kickstart file referring to /dev/vda but in any case it's tickling some minor gpt bug in parted. Version-Release number of selected component (if applicable): parted 2.3 in Fedora 15 boot.iso (from e.g. http://ftp.osuosl.org/pub/fedora/linux/releases/15/Fedora/x86_64/os/images/ ) How reproducible: Steps to Reproduce: 1. Boot Fedora 15 installer in a KVM virtual machine (I used virt-manager) 2. When installer starts, switch to shell (Ctrl-Alt-F2) 3. Run these commands: dd if=/dev/urandom of=/dev/vda bs=512 count=64 parted -s /dev/vda mklabel gpt parted -s /dev/vda unit mb print free Actual results: Core dump and errors including: "Assertion (last_usable > first_usable) at gpt.c:713 in function _parse_header() failed.": Expected results: "No such file or directory" or anything other than a core dump. Additional info:
writing random data to the device is guaranteed to cause problems. Use /dev/zero to initialize devices, not /dev/urandom