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From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,yosry.ahmed@linux.dev,ryncsn@gmail.com,minchan@kernel.org,hdanton@sina.com,bigeasy@linutronix.de,senozhatsky@chromium.org,akpm@linux-foundation.org
Subject: [merged mm-stable] zram-do-not-leak-page-on-recompress_store-error-path.patch removed from -mm tree
Date: Sun, 16 Mar 2025 22:13:51 -0700	[thread overview]
Message-ID: <20250317051352.12437C4CEEF@smtp.kernel.org> (raw)


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@chromium.org>
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@chromium.org
Fixes: 3f909a60cec1 ("zram: rework recompress 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, 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@chromium.org are



                 reply	other threads:[~2025-03-17  5:13 UTC|newest]

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