From 3f6f6343a29d9ea7429306b83b18e66dc1331d5c Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 3 Dec 2020 11:41:13 +0300
Subject: [PATCH] usb: mtu3: fix memory corruption in mtu3_debugfs_regset()
Git-commit: 3f6f6343a29d9ea7429306b83b18e66dc1331d5c
Patch-mainline: v5.11-rc1
References: git-fixes
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/usb/mtu3/mtu3_debugfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/mtu3/mtu3_debugfs.c b/drivers/usb/mtu3/mtu3_debugfs.c
index fdeade6254ae..7537bfd651af 100644
--- 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;
--
2.26.2