mkfs: terminate getsubopt arrays properly
Having not drank any (or maybe too much) coffee this morning, I typed:
$ mkfs.xfs -d agcount=3 -d nrext64=0
Segmentation fault
I traced this down to getsubopt walking off the end of the dopts.subopts
array. The manpage says you're supposed to terminate the suboptions
string array with a NULL entry, but the structure definition uses
MAX_SUBOPTS/D_MAX_OPTS directly, which means there is no terminator.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
1 file changed
