From: Lasse Collin <lasse.collin@tukaani.org>
Date: Thu, 13 Jan 2011 01:01:18 +0000 (-0800)
Subject: Decompressors: check for write errors in decompress_unlzma.c
X-Git-Tag: v2.6.38-rc1~257
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=528941ca05734f24a7568c1c082125f2b635c4eb;p=pandora-kernel.git

Decompressors: check for write errors in decompress_unlzma.c

The return value of wr->flush() is not checked in write_byte().  This
means that the decompressor won't stop even if the caller doesn't want
more data.  This can happen e.g.  with corrupt LZMA-compressed initramfs.
Returning the error quickly allows the user to see the error message
quicker.

There is a similar missing check for wr.flush() near the end of unlzma().

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>
---

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