linux-kernel - Re: [PATCH v4] staging: rtl8723bs: fix potential race in expire_timeout

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Message-ID: <2026020707-starring-steadily-4d5d@gregkh>
Date: Sat, 7 Feb 2026 13:06:31 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Minu Jin <s9430939@...er.com>
Cc: dan.carpenter@...aro.org, bqn9090@...il.com,
	abrahamadekunle50@...il.com, straube.linux@...il.com,
	bryant.boatright@...ton.me, davidzalman.101@...il.com,
	linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] staging: rtl8723bs: fix potential race in
 expire_timeout_chk

On Sun, Feb 01, 2026 at 02:11:53AM +0900, Minu Jin wrote:
> The expire_timeout_chk function currently do lock and unlock inside the
> loop before calling rtw_free_stainfo().
> 
> This can be risky as the list might be changed
> when the lock is briefly released.
> 
> To fix this, move expired sta_info entries into a local free_list while
> holding the lock, and then perform the actual freeing after the lock is
> released.
> 
> Signed-off-by: Minu Jin <s9430939@...er.com>
> Reviewed-by: Dan Carpenter <dan.carpenter@...aro.org>
> ---
> Changes in v4:
>     - Add Reviewed-by tag from Dan Carpenter

You never have to do this.  Our tools pick that up, and this just moves
you further down the review queue as it's a new submission :(

thanks,

greg k-h