| From | Greg Kroah-Hartman <> | Subject | [ 063/102] zram: avoid double free in function zram_bvec_write() | Date | Thu, 8 Aug 2013 18:57:39 -0700 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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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;
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