[PATCH] jffs2: Fix rtime decompressor

[Richard Weinberger]

The fix for a memory corruption contained a off-by-one error and
caused the compressor to fail in legit cases.

Cc: Kinsey Moore <kinsey.moore at oarcorp.com>
Cc: stable at vger.kernel.org
Fixes: fe051552f5078 ("jffs2: Prevent rtime decompress memory corruption")
Signed-off-by: Richard Weinberger <richard at nod.at>
---
 fs/jffs2/compr_rtime.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/jffs2/compr_rtime.c b/fs/jffs2/compr_rtime.c
index 2b9ef713b844a..3bd9d2f3bece2 100644
--- a/fs/jffs2/compr_rtime.c
+++ b/fs/jffs2/compr_rtime.c
@@ -95,7 +95,7 @@ static int jffs2_rtime_decompress(unsigned char *data_in,
 
 		positions[value]=outpos;
 		if (repeat) {
-			if ((outpos + repeat) >= destlen) {
+			if ((outpos + repeat) > destlen) {
 				return 1;
 			}
 			if (backoffs + repeat >= outpos) {
-- 
2.47.0