Commit 8f9b54a3 authored Jan 12, 2011 by Lasse Collin Committed by Linus Torvalds Jan 13, 2011

Decompressors: check for write errors in decompress_unlzo.c

The return value of flush() is not checked in unlzo().  This means that
the decompressor won't stop even if the caller doesn't want more data.
This can happen e.g.  with a corrupt LZO-compressed initramfs image.

Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Alain Knaff <alain@knaff.lu>
Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Cc: Phillip Lougher <phillip@lougher.demon.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent eb0cf3e1

lib/decompress_unlzo.c

+2 −2

Original line number	Original line	Diff line number	Diff line
	@@ -187,8 +187,8 @@ STATIC inline int INIT unlzo(u8 *input, int in_len,
	}		}
	}		}

	if (flush)		if (flush && flush(out_buf, dst_len) != dst_len)
	flush(out_buf, dst_len);		goto exit_2;
	if (output)		if (output)
	out_buf += dst_len;		out_buf += dst_len;
	if (posp)		if (posp)