linux-kernel - Re: [PATCH v2] staging: mmal-vchiq: add a check for the return of vmalloc()

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Date:   Wed, 16 Mar 2022 15:08:20 +0100
From:   gregkh <gregkh@...uxfoundation.org>
To:     Xiaoke Wang <xkernel.wang@...mail.com>
Cc:     "dan.carpenter" <dan.carpenter@...cle.com>,
        nsaenz <nsaenz@...nel.org>,
        bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
        linux-rpi-kernel <linux-rpi-kernel@...ts.infradead.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-staging <linux-staging@...ts.linux.dev>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] staging: mmal-vchiq: add a check for the return of
 vmalloc()

On Wed, Mar 16, 2022 at 12:23:05AM +0800, Xiaoke Wang wrote:
> On Tue, 15 Mar 2022 16:27:38 +0100, Greg KH wrote:
> &gt; Your change just crashed the kernel :(
> &gt;
> &gt; Please be more careful
> 
> I am sorry. I ever been told that vfree(NULL) or kfree(NULL) is safe,

Sorry, you are right, I was thinking that there would be an error value
there.  My mistake.

greg k-h