+ zram-free-secondary-algorithms-names.patch added to mm-unstable branch

+ zram-free-secondary-algorithms-names.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: zram: free secondary algorithms names
has been added to the -mm mm-unstable branch.  Its filename is
     zram-free-secondary-algorithms-names.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zram-free-secondary-algorithms-names.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@chromium.org>
Subject: zram: free secondary algorithms names
Date: Wed, 11 Sep 2024 11:54:56 +0900

We need to kfree() secondary algorithms names when reset zram device that
had multi-streams, otherwise we leak memory.

Link: https://lkml.kernel.org/r/20240911025600.3681789-1-senozhatsky@chromium.org
Fixes: 001d92735701 ("zram: add recompression algorithm sysfs knob")
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/block/zram/zram_drv.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/block/zram/zram_drv.c~zram-free-secondary-algorithms-names
+++ a/drivers/block/zram/zram_drv.c
@@ -2112,6 +2112,13 @@ static void zram_destroy_comps(struct zr
 		zram->num_active_comps--;
 	}
 
+	for (prio = ZRAM_SECONDARY_COMP; prio < ZRAM_MAX_COMPS; prio++) {
+		if (!zram->comp_algs[prio])
+			continue;
+		kfree(zram->comp_algs[prio]);
+		zram->comp_algs[prio] = NULL;
+	}
+
 	zram_comp_params_reset(zram);
 }
 
_

Patches currently in -mm which might be from senozhatsky@chromium.org are

zsmalloc-use-unique-zsmalloc-caches-names.patch
zram-free-secondary-algorithms-names.patch