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@oarcorp.com Cc: stable@vger.kernel.org Fixes: fe051552f5078 ("jffs2: Prevent rtime decompress memory corruption") Signed-off-by: Richard Weinberger richard@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) {