From 8d925b1f00e6894e4c601cb1d395dab3bd66c374 Mon Sep 17 00:00:00 2001 From: Zou Wei Date: Sun, 26 Apr 2020 10:42:44 +0800 Subject: [PATCH] scsi: aacraid: Use memdup_user() as a cleanup Fix coccicheck warning which recommends to use memdup_user(). This patch fixes the following coccicheck warning: drivers/scsi/aacraid/commctrl.c:516:15-22: WARNING opportunity for memdup_user Link: https://lore.kernel.org/r/1587868964-75969-1-git-send-email-zou_wei@huawei.com Fixes: 4645df1035b3 ("[PATCH] aacraid: swapped kmalloc args.") Reported-by: Hulk Robot Signed-off-by: Zou Wei Signed-off-by: Martin K. Petersen --- drivers/scsi/aacraid/commctrl.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index ffe41bc111fc..102658bdc15a 100644 --- a/drivers/scsi/aacraid/commctrl.c +++ b/drivers/scsi/aacraid/commctrl.c @@ -513,15 +513,9 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) goto cleanup; } - user_srbcmd = kmalloc(fibsize, GFP_KERNEL); - if (!user_srbcmd) { - dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n")); - rcode = -ENOMEM; - goto cleanup; - } - if(copy_from_user(user_srbcmd, user_srb,fibsize)){ - dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n")); - rcode = -EFAULT; + user_srbcmd = memdup_user(user_srb, fibsize); + if (IS_ERR(user_srbcmd)) { + rcode = PTR_ERR(user_srbcmd); goto cleanup; }