tree e2cb6be1d6e16bd0da18a79a8a85f4194df33d6f
parent f984d024190d5df98e448e35aa9e89a46fe50bb9
author Mikulas Patocka <mpatocka@redhat.com> 1233347234 -0500
committer Linus Torvalds <torvalds@linux-foundation.org> 1233445891 -0800

Fix memory corruption in console selection

Fix an off-by-two memory error in console selection.

The loop below goes from sel_start to sel_end (inclusive), so it writes
one more character.  This one more character was added to the allocated
size (+1), but it was not multiplied by an UTF-8 multiplier.

This patch fixes a memory corruption when UTF-8 console is used and the
user selects a few characters, all of them 3-byte in UTF-8 (for example
a frame line).

When memory redzones are enabled, a redzone corruption is reported.
When they are not enabled, trashing of random memory occurs.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>