linux-kernel - [PATCH] zram: Fix buffer size passed to strlcpy()

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Message-Id: <20170728171243.23374-1-mka@chromium.org>
Date:   Fri, 28 Jul 2017 10:12:43 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Minchan Kim <minchan@...nel.org>, Nitin Gupta <ngupta@...are.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        Doug Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH] zram: Fix buffer size passed to strlcpy()

comp_algorithm_store() passes the size of the source buffer to strlcpy()
instead of the destination buffer size, fix this.

Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
---
 drivers/block/zram/zram_drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 856d5dc02451..7d2ddffad361 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -327,7 +327,7 @@ static ssize_t comp_algorithm_store(struct device *dev,
 		return -EBUSY;
 	}
 
-	strlcpy(zram->compressor, compressor, sizeof(compressor));
+	strlcpy(zram->compressor, compressor, sizeof(zram->compressor));
 	up_write(&zram->init_lock);
 	return len;
 }
-- 
2.14.0.rc0.400.g1c36432dff-goog