From 65c484609a3b25c35e4edcd5f2c38f98f5226093 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Fri, 7 Jun 2013 00:07:25 +0800 Subject: [PATCH] zram: avoid double free in function zram_bvec_write() When doing a patial write and the whole page is filled with zero, zram_bvec_write() will free uncmem twice. Signed-off-by: Jiang Liu Acked-by: Minchan Kim Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/staging/zram/zram_drv.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c index 3335a6ce1784..f7603617db75 100644 --- a/drivers/staging/zram/zram_drv.c +++ b/drivers/staging/zram/zram_drv.c @@ -272,8 +272,6 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec, u32 index, if (page_zero_filled(uncmem)) { kunmap_atomic(user_mem); - if (is_partial_io(bvec)) - kfree(uncmem); zram->stats.pages_zero++; zram_set_flag(meta, index, ZRAM_ZERO); ret = 0; -- 2.34.1