linux-kernel - Re: [PATCH V5] staging: rtl8192e: Fix signedness bug in rtllib_rx_assoc

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Message-ID: <20220421162201.GC2462@kadam>
Date:   Thu, 21 Apr 2022 19:22:01 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Haowen Bai <baihaowen@...zu.com>
Cc:     lkp@...el.com, gregkh@...uxfoundation.org, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev
Subject: Re: [PATCH V5] staging: rtl8192e: Fix signedness bug in
 rtllib_rx_assoc_resp()

On Thu, Apr 21, 2022 at 04:21:17PM +0800, Haowen Bai wrote:
> The rtllib_rx_assoc_resp() function has a signedness bug because it's
> a declared as a u16 but it return -ENOMEM.  When you look at it more
> closely it returns a mix of error codes including 0xcafe, -ENOMEM, and
> a->status which is WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG.  This is a mess.
> 
> Clean it up to just return standard kernel error codes.  We can print
> out the a->status before returning a regular error code.  The printks
> in the caller need to be adjusted as well.
> 
> Signed-off-by: Haowen Bai <baihaowen@...zu.com>
> ---
> V1->V2: reduce return random value; print its own error message.
> V2->V3: change commit message; change s16 -> int.
> V3->V4: 
> 1. change message suggested by Dan Carpenter;
> 2. hold a->status in auth_parse() and return error code or 0 on success.
> 3. print le16_to_cpu(errcode) -> int %d.
> V4->V5: fix compile error.
> 

Looks ok.

Reviewed-by: Dan Carpenter <dan.carpenter@...cle.com>

regards,
dan carpenter