From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Mon, 3 Sep 2012 10:02:23 +0000 (+0800)
Subject: staging: bcm: fix possible memory leak in bcm_char_ioctl()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dce15efebe76088dc381ab91156842ebf7c79aca;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

staging: bcm: fix possible memory leak in bcm_char_ioctl()

psFwInfo has been allocated in this function and should be
freed before leaving from the error handling cases.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/bcm/Bcmchar.c b/drivers/staging/bcm/Bcmchar.c
index cf411d1706b1..3d02c2ebfb8d 100644
--- a/drivers/staging/bcm/Bcmchar.c
+++ b/drivers/staging/bcm/Bcmchar.c
@@ -820,6 +820,7 @@ cntrlEnd:
 
 		if (copy_from_user(psFwInfo, IoBuffer.InputBuffer, IoBuffer.InputLength)) {
 			up(&Adapter->fw_download_sema);
+			kfree(psFwInfo);
 			return -EFAULT;
 		}
 
@@ -829,6 +830,7 @@ cntrlEnd:
 			BCM_DEBUG_PRINT(Adapter, DBG_TYPE_PRINTK, 0, 0, "Something else is wrong %lu\n",
 					psFwInfo->u32FirmwareLength);
 			up(&Adapter->fw_download_sema);
+			kfree(psFwInfo);
 			Status = -EINVAL;
 			return Status;
 		}