lkml.org 
[lkml]   [2013]   [Aug]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[ 063/102] zram: avoid double free in function zram_bvec_write()
Date
3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jiang Liu <liuj97@gmail.com>

commit 65c484609a3b25c35e4edcd5f2c38f98f5226093 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/staging/zram/zram_drv.c | 2 --
1 file changed, 2 deletions(-)

--- 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 *

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;



\
 
 \ /
  Last update: 2013-08-09 05:21    [W:0.310 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site