From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 605A02576E; Sat, 12 Sep 2026 07:57:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789199861; cv=none; b=LmMUIpIZ1HbvawkUBcfpUmwmxe7CN6hp2NzWRBTgzIweRP6GtTQhMb9wMeQDU5usykdbU1uqg/xbo6V3RlGYSYdsyY1FMHW9dgsJFsDZfSg9NDTbSc7YRb6yCc9BJ7nD3qlE4wse/VwB6zpowr+IUFpqsDIKeaXwYSmNEGGZl5E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789199861; c=relaxed/simple; bh=Ou67iaXqQ0lx10+nwEF9xJQeqqNOxN4/W2108uxcJO8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Z/CDkY6JE//hXMwAWTYSxI+I7B7nJvUcKdaNFcbxzKq+hyh4JcDoE8MwZwoy/u+mbt3xmdd6vCCvYyg7DMAAJZxxTxjXdfK9WgWvBSmRKHXSGwjRax03KKLADh7NywqcJewmCV9E7ZpRz+KpkpsVL4rem/KOd+UcJlLJ4C2TXYM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SudhrTVF; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SudhrTVF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DC1701F000FF; Sat, 12 Sep 2026 07:57:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789199858; bh=Ybe05jnq1HZwL5qZ4irmW0iRQVFIcYBSrFnySXfbeB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=SudhrTVF3P7EMr+LeNbZTzQ5+EXC+If+i8T0cH0Fn/6/B9gCVkWEbS5ZESvl9fPFI 4n08MJJyz+n2Vcg7G3kZpVhwj6A8UOOPqdH5JMl43BMHC/R/jF8vbCjk6lruc5sdom uMRjuGUGjJ8sLBHyXEVznespJix7o90G0LHR/peo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Li Qiang , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 7.2 0670/1815] scsi: ufs: core: Validate connected lane counts Date: Sat, 12 Sep 2026 08:40:20 +0200 Message-ID: <20260912065704.616285660@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065648.999753832@linuxfoundation.org> References: <20260912065648.999753832@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Li Qiang [ Upstream commit 9e6dd452f1affb5c412ca64bf5809ce9fde3174d ] The connected lane count is used by TX equalization code to index arrays sized by UFS_MAX_LANES. Reject zero and out-of-range RX or TX lane counts before they can be propagated. Fixes: 03e5d38e2f98 ("scsi: ufs: core: Add support for TX Equalization") Signed-off-by: Li Qiang Link: https://patch.msgid.link/20260717153914.26321-4-liqiang01@kylinos.cn Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/ufs/core/ufshcd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 355393ac562b7..686c21301e026 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -4729,7 +4729,9 @@ static int ufshcd_get_max_pwr_mode(struct ufs_hba *hba) ufshcd_dme_get(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES), &pwr_info->lane_tx); - if (!pwr_info->lane_rx || !pwr_info->lane_tx) { + if (!pwr_info->lane_rx || !pwr_info->lane_tx || + pwr_info->lane_rx > UFS_MAX_LANES || + pwr_info->lane_tx > UFS_MAX_LANES) { dev_err(hba->dev, "%s: invalid connected lanes value. rx=%d, tx=%d\n", __func__, pwr_info->lane_rx, -- 2.53.0