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Decompressors: check for write errors in decompress_unlzo.c

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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>
This commit is contained in:
Lasse Collin 2011-01-12 17:01:20 -08:00 committed by Linus Torvalds
parent eb0cf3e19b
commit 8f9b54a35a
1 changed files with 2 additions and 2 deletions
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4
lib/decompress_unlzo.c
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@ -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)