3.5.7.17 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiang Liu <liuj97@xxxxxxxxx>
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@xxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
[ luis: backported to 3.5: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
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 7860762..6b1e443 100644
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -361,8 +361,6 @@ 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_stat_inc(&zram->stats.pages_zero);
zram_set_flag(zram, index, ZRAM_ZERO);
ret = 0;
--
1.8.1.2
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