linux-kernel - Re: [PATCH 1/1] ath10k: avoid possible memory access violation

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Date:   Thu,  6 Sep 2018 16:04:42 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     "K.T.VIJAYAKUMAAR" <vijay.bvb@...sung.com>
Cc:     davem@...emloft.net, ath10k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, cpgs@...sung.com,
        vijay.bvb@...sung.com
Subject: Re: [PATCH 1/1] ath10k: avoid possible memory access violation

"K.T.VIJAYAKUMAAR" <vijay.bvb@...sung.com> wrote:

> array "ctl_power_table" access index "pream" is initialized with -1 and
> is raised as a static analysis tool issue.
> [drivers\net\wireless\ath\ath10k\wmi.c:4719] ->
> [drivers\net\wireless\ath\ath10k\wmi.c:4730]: (error) Array index -1 is
> out of bounds.
> 
> Since the "pream" index for accessing ctl_power_table array is initialized
> with -1, there is a chance of memory access violation for the cases below.
> 1) wmi_pdev_tpc_final_table_event change frequency is between 2483 and 5180
> 2) pream_idx is out of the enumeration ranges of wmi_tpc_pream_2ghz,
> wmi_tpc_pream_5ghz
> 
> Signed-off-by: K.T.VIJAYAKUMAAR <vijay.bvb@...sung.com>
> [kvalo@...eaurora.org: clean up the warning message]
> Signed-off-by: Kalle Valo <kvalo@...eaurora.org>

Patch applied to ath-next branch of ath.git, thanks.

97c69a70dc2c ath10k: avoid possible memory access violation

-- 
https://patchwork.kernel.org/patch/10554929/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches