usb: mtu3: fix memory corruption in mtu3_debugfs_regset()

commit 3f6f6343a29d9ea7429306b83b18e66dc1331d5c upstream.

This code is using the wrong sizeof() so it does not allocate enough
memory.  It allocates 32 bytes but 72 are required.  That will lead to
memory corruption.

Fixes: ae07809255d3 ("usb: mtu3: add debugfs interface files")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/X8ikqc4Mo2/0G72j@mwanda
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/mtu3/mtu3_debugfs.c b/drivers/usb/mtu3/mtu3_debugfs.c
index fdeade6254aeccad2bb13da9ac7dbce4edaa23b6..7537bfd651af6d0a1d2d6686ec0c7582f8b75517 100644 (file)
--- a/drivers/usb/mtu3/mtu3_debugfs.c
+++ b/drivers/usb/mtu3/mtu3_debugfs.c
@@ -127,7 +127,7 @@ static void mtu3_debugfs_regset(struct mtu3 *mtu, void __iomem *base,
        struct debugfs_regset32 *regset;
        struct mtu3_regset *mregs;
 
-       mregs = devm_kzalloc(mtu->dev, sizeof(*regset), GFP_KERNEL);
+       mregs = devm_kzalloc(mtu->dev, sizeof(*mregs), GFP_KERNEL);
        if (!mregs)
                return;