From d801ab204b5a500b66ca285ac7b440cc79933a27 Mon Sep 17 00:00:00 2001 From: KOVACS Krisztian Date: Fri, 22 Aug 2014 10:44:35 +0200 Subject: [PATCH] crypto: lz4,lz4hc - fix decompression The lz4 library has two functions for decompression, with slightly different signatures and behaviour. The lz4_decompress_crypto() function seemed to be using the one that assumes that the decompressed length is known in advance. This patch switches to the other decompression function and makes sure that the length of the decompressed output is properly returned to the caller. The same issue was present in the lz4hc algorithm. Coincidentally, this change also makes very basic lz4 and lz4hc compression tests in testmgr pass. Signed-off-by: KOVACS Krisztian Signed-off-by: Herbert Xu --- crypto/lz4.c | 2 +- crypto/lz4hc.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/crypto/lz4.c b/crypto/lz4.c index 4586dd15b0d8..34d072b72a73 100644 --- a/crypto/lz4.c +++ b/crypto/lz4.c @@ -68,7 +68,7 @@ static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src, size_t tmp_len = *dlen; size_t __slen = slen; - err = lz4_decompress(src, &__slen, dst, tmp_len); + err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len); if (err < 0) return -EINVAL; diff --git a/crypto/lz4hc.c b/crypto/lz4hc.c index 151ba31d34e3..9218b3fed5e3 100644 --- a/crypto/lz4hc.c +++ b/crypto/lz4hc.c @@ -68,7 +68,7 @@ static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src, size_t tmp_len = *dlen; size_t __slen = slen; - err = lz4_decompress(src, &__slen, dst, tmp_len); + err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len); if (err < 0) return -EINVAL;