Commit 65c48460 authored Jun 07, 2013 by Jiang Liu Committed by Greg Kroah-Hartman Jun 06, 2013

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 <jiang.liu@huawei.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 39a9b8ac

drivers/staging/zram/zram_drv.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -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;