This is a note to let you know that I've just added the patch titled
zram: free secondary algorithms names
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
zram-free-secondary-algorithms-names.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9b1c79d9b17fb84726f1eaac92b49f40d9b70d1d
Author: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Date: Wed Oct 9 13:51:39 2024 +0900
zram: free secondary algorithms names
[ Upstream commit 684826f8271ad97580b138b9ffd462005e470b99 ]
We need to kfree() secondary algorithms names when reset zram device that
had multi-streams, otherwise we leak memory.
[senozhatsky@xxxxxxxxxxxx: kfree(NULL) is legal]
Link: https://lkml.kernel.org/r/20240917013021.868769-1-senozhatsky@xxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20240911025600.3681789-1-senozhatsky@xxxxxxxxxxxx
Fixes: 001d92735701 ("zram: add recompression algorithm sysfs knob")
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 06673c6ca2555..db729035fd6bf 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1983,6 +1983,11 @@ static void zram_destroy_comps(struct zram *zram)
zcomp_destroy(comp);
zram->num_active_comps--;
}
+
+ for (prio = ZRAM_SECONDARY_COMP; prio < ZRAM_MAX_COMPS; prio++) {
+ kfree(zram->comp_algs[prio]);
+ zram->comp_algs[prio] = NULL;
+ }
}
static void zram_reset_device(struct zram *zram)
