From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2A1CC258CE1; Thu, 17 Apr 2025 17:59:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744912763; cv=none; b=aaac/rbwuO2ZPoR6pbZNRxOKOm1K582PKzEAkqv1W8Gtzae6ZxOF06uVxGh9s7U7mD87p447WcvoYa2S4Rgn3Ktj6mW8yR0pcskrp39Z5nd9cLgPHU4xZfAphf3hezVQA+dn2gZFDPb+OjqJO0neYan2v11NKrnJ3CQKEc8pAN4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744912763; c=relaxed/simple; bh=4oyTxXCduTZ2hMTDF2sojG1DCdpk/EJiIaIAO0OTTaI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OoDm4u8ej5v5eTBrs8i2XfRkY354V6jCu+Xe0a+rmja9jx830aKVxr2E6KG9S8RvtDpSnqxO1CaeBtQExQ72ZWiDD4IrT8BQfewp7tnMyBWsO9c5t1Fc1a3mjpZU9aX5t0fVshjTF1OeBNXVdC/PWs6YGjy1V5mPwxxJh2uF1mc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=E1KceUf0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="E1KceUf0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95945C4CEE4; Thu, 17 Apr 2025 17:59:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1744912763; bh=4oyTxXCduTZ2hMTDF2sojG1DCdpk/EJiIaIAO0OTTaI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=E1KceUf0m/JH3bdA8xabEaIGsnmCzGyL/w14Er6E0h3x8641L7Uv/gw5nQ9AymcP2 UPOcBpCtzPVUhByKtO9h9Sf9A12iah65QeY4eNrhSqerVap/dmEAEl/EjcZY+e32uv 2gxhTSQc1rW3kGPEuatXccA9K/t/h7/R5AgQZnfg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, P Praneesh , Jeff Johnson , Sasha Levin Subject: [PATCH 6.14 099/449] wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process Date: Thu, 17 Apr 2025 19:46:27 +0200 Message-ID: <20250417175121.944610111@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250417175117.964400335@linuxfoundation.org> References: <20250417175117.964400335@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: P Praneesh [ Upstream commit 63fdc4509bcf483e79548de6bc08bf3c8e504bb3 ] Currently, ath12k_dp_mon_srng_process uses ath12k_hal_srng_src_get_next_entry to fetch the next entry from the destination ring. This is incorrect because ath12k_hal_srng_src_get_next_entry is intended for source rings, not destination rings. This leads to invalid entry fetches, causing potential data corruption or crashes due to accessing incorrect memory locations. This happens because the source ring and destination ring have different handling mechanisms and using the wrong function results in incorrect pointer arithmetic and ring management. To fix this issue, replace the call to ath12k_hal_srng_src_get_next_entry with ath12k_hal_srng_dst_get_next_entry in ath12k_dp_mon_srng_process. This ensures that the correct function is used for fetching entries from the destination ring, preventing invalid memory accesses. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 Signed-off-by: P Praneesh Link: https://patch.msgid.link/20241223060132.3506372-7-quic_ppranees@quicinc.com Signed-off-by: Jeff Johnson Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath12k/dp_mon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath12k/dp_mon.c b/drivers/net/wireless/ath/ath12k/dp_mon.c index 5a21961cfd465..252d8e8a2080e 100644 --- a/drivers/net/wireless/ath/ath12k/dp_mon.c +++ b/drivers/net/wireless/ath/ath12k/dp_mon.c @@ -2519,7 +2519,7 @@ int ath12k_dp_mon_rx_process_stats(struct ath12k *ar, int mac_id, dest_idx = 0; move_next: ath12k_dp_mon_buf_replenish(ab, buf_ring, 1); - ath12k_hal_srng_src_get_next_entry(ab, srng); + ath12k_hal_srng_dst_get_next_entry(ab, srng); num_buffs_reaped++; } -- 2.39.5