[merged mm-stable] zram-do-not-leak-page-on-writeback_store-error-path.patch removed from -mm tree

[merged mm-stable] zram-do-not-leak-page-on-writeback_store-error-path.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: zram: do not leak page on writeback_store error path
has been removed from the -mm tree.  Its filename was
     zram-do-not-leak-page-on-writeback_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@chromium.org>
Subject: zram: do not leak page on writeback_store error path
Date: Mon, 3 Mar 2025 11:03:27 +0900

Ensure the page used for local object data is freed on error out path.

Link: https://lkml.kernel.org/r/20250303022425.285971-19-senozhatsky@chromium.org
Fixes: 330edc2bc059 (zram: rework writeback target selection strategy)
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Kairui Song <ryncsn@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Yosry Ahmed <yosry.ahmed@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/block/zram/zram_drv.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/block/zram/zram_drv.c~zram-do-not-leak-page-on-writeback_store-error-path
+++ a/drivers/block/zram/zram_drv.c
@@ -787,7 +787,7 @@ static ssize_t writeback_store(struct de
 	unsigned long index = 0;
 	struct bio bio;
 	struct bio_vec bio_vec;
-	struct page *page;
+	struct page *page = NULL;
 	ssize_t ret = len;
 	int mode, err;
 	unsigned long blk_idx = 0;
@@ -929,8 +929,10 @@ next:
 
 	if (blk_idx)
 		free_block_bdev(zram, blk_idx);
-	__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@chromium.org are