Commit 8e20ba2e authored by Lasse Collin's avatar Lasse Collin Committed by Linus Torvalds
Browse files

lib/xz: fix XZ_DYNALLOC to avoid useless memory reallocations

s->dict.allocated was initialized to 0 but never set after a successful
allocation, thus the code always thought that the dictionary buffer has
to be reallocated.

Link: http://lkml.kernel.org/r/20191104185107.3b6330df@tukaani.org

Signed-off-by: default avatarLasse Collin <lasse.collin@tukaani.org>
Reported-by: default avatarYu Sun <yusun2@cisco.com>
Acked-by: default avatarDaniel Walker <danielwa@cisco.com>
Cc: "Yixia Si (yisi)" <yisi@cisco.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 82072962
......@@ -1146,6 +1146,7 @@ XZ_EXTERN enum xz_ret xz_dec_lzma2_reset(struct xz_dec_lzma2 *s, uint8_t props)
if (DEC_IS_DYNALLOC(s->dict.mode)) {
if (s->dict.allocated < s->dict.size) {
s->dict.allocated = s->dict.size;
vfree(s->dict.buf);
s->dict.buf = vmalloc(s->dict.size);
if (s->dict.buf == NULL) {
......
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