5.4-stable review patch. If anyone has any objections, please let me know.
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From: Richard Weinberger richard@nod.at
commit b29bf7119d6bbfd04aabb8d82b060fe2a33ef890 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/jffs2/compr_rtime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/jffs2/compr_rtime.c +++ b/fs/jffs2/compr_rtime.c @@ -95,7 +95,7 @@ static int jffs2_rtime_decompress(unsign
positions[value]=outpos; if (repeat) { - if ((outpos + repeat) >= destlen) { + if ((outpos + repeat) > destlen) { return 1; } if (backoffs + repeat >= outpos) {