The quilt patch titled
Subject: zram: do not leak page on recompress_store error path
has been removed from the -mm tree. Its filename was
zram-do-not-leak-page-on-recompress_store-error-path.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Subject: zram: do not leak page on recompress_store error path
Date: Mon, 3 Mar 2025 11:03:26 +0900
Ensure the page used for local object data is freed on error out path.
Link: https://lkml.kernel.org/r/20250303022425.285971-18-senozhatsky@xxxxxxxxxxxx
Fixes: 3f909a60cec1 ("zram: rework recompress target selection strategy")
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Hillf Danton <hdanton@xxxxxxxx>
Cc: Kairui Song <ryncsn@xxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Cc: Yosry Ahmed <yosry.ahmed@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/block/zram/zram_drv.c~zram-do-not-leak-page-on-recompress_store-error-path
+++ a/drivers/block/zram/zram_drv.c
@@ -2013,7 +2013,7 @@ static ssize_t recompress_store(struct d
struct zram_pp_slot *pps;
u32 mode = 0, threshold = 0;
u32 prio, prio_max;
- struct page *page;
+ struct page *page = NULL;
ssize_t ret;
prio = ZRAM_SECONDARY_COMP;
@@ -2157,9 +2157,9 @@ next:
cond_resched();
}
- __free_page(page);
-
release_init_lock:
+ if (page)
+ __free_page(page);
release_pp_ctl(zram, ctl);
atomic_set(&zram->pp_in_progress, 0);
up_read(&zram->init_lock);
_
Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are
