Pseudo-file named '/'

[countingpine]

Originally posted at https://bugs.launchpad.net/ubuntu/+source/squashfs-tools/+bug/1745757 (via https://bugs.launchpad.net/ubuntu/+source/squashfs-tools/+bugs), but I don't know if anyone checks there.

This command creates an archive with a small file named '/':

mksquashfs /tmp/empty /tmp/crash.sfs -p "/ f 444 root root echo"

Trying unsquashfs on the produced archive complains with dir_scan: failed to read directory squashfs-root, skipping:

unsquashfs -i /tmp/crash.sfs

Trying to add anything (or nothing) to the archive with squashfs causes a buffer overflow internally:

mksquashfs /tmp/empty /tmp/crash.sfs

[plougher]

Fixed in git. Will be in next release