Re: [PATCH 3/7] e2fsprogs: fix unexpected NULL variable

On Fri, Aug 06, 2021 at 11:58:16AM +0200, Lukas Czerner wrote:

The ext2fs_check_mount_point() function can be called with mtpt being
NULL as for example from ext2fs_check_if_mounted(). However in the
is_swap_device condition we use the mtpt in strncpy without checking
whether it is non-null first.

This should not be a problem on linux since the previous attempt to open
the device exclusively would have prevented us from ever reaching the
problematic strncpy. However it's still a bug and can cause problems on
other systems, fix it by conditioning strncpy on mtpt not being null.

Signed-off-by: Lukas Czerner <redacted>

Applied, thanks.

					- Ted