linux-kernel - Re: [PATCH] wifi: ath12k: Fix for out-of bound access error

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Message-ID: <8734kpq0wo.fsf@kernel.org>
Date: Mon, 21 Oct 2024 12:07:51 +0300
From: Kalle Valo <kvalo@...nel.org>
To: Karol Przybylski <karprzy7@...il.com>
Cc: jjohnson@...nel.org,  linux-wireless@...r.kernel.org,
  ath12k@...ts.infradead.org,  linux-kernel@...r.kernel.org
Subject: Re: [PATCH] wifi: ath12k: Fix for out-of bound access error

Karol Przybylski <karprzy7@...il.com> writes:

> Size of array passed to print_array_to_buf_index is decremented by 1
>
> Discovered in coverity scan, CID 1600742
>
> Signed-off-by: Karol Przybylski <karprzy7@...il.com>
> ---
>  drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c b/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c
> index b2be7dade79f..74767ba9ec2b 100644
> --- a/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c
> +++ b/drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c
> @@ -1550,7 +1550,7 @@ ath12k_htt_print_tx_selfgen_ax_stats_tlv(const void *tag_buf, u16 tag_len,
>  			 le32_to_cpu(htt_stats_buf->ax_mu_mimo_ndp));
>  	len += print_array_to_buf_index(buf, len, "ax_mu_mimo_brpollX_tried = ", 1,
>  					htt_stats_buf->ax_mu_mimo_brpoll,
> -					ATH12K_HTT_TX_NUM_AX_MUMIMO_USER_STATS, "\n");
> +					ATH12K_HTT_TX_NUM_AX_MUMIMO_USER_STATS-1, "\n");

A space before and after '-', please.

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