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 A7D1E18F2DB; Tue, 10 Sep 2024 10:15:06 +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=1725963306; cv=none; b=ooDDPTpgM5q0AIufOz1z/Fde7mJPdENWjMVHzCXhxMfOFTvd5QsPsHsDkk/CHKC3A2/wwQw8DEeZtFKAx81VkJmVFOXce1hcfy/65BRsa6P2x4Za31UsM1DSqEhr9isrIJS0XxOh6pT+j4++nCCD5/Rm2qIolzUc476BnV0MGCA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725963306; c=relaxed/simple; bh=gSOoYiEUoy/XC821m9X5Ow4GAFvQOWPuIHOIpVzRRnQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bJeFZ6+kUsbu3pCFAOhdIthCf0fIyJ9J34JKEm8urCD9v8cx81JgQuVUPBSBCYF0c2KP9m8no6W/oWu9hYIrgnjTxQDUJg0gyq0mo2Rr+VIzVTQH4yH4UYthJl2u5bFF+kSjm9alUzDTlzXKSCNfS3bZhLr+wBW6VpRGLXjcqO0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cpPoNS+H; 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="cpPoNS+H" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2F6FFC4CEC3; Tue, 10 Sep 2024 10:15:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1725963306; bh=gSOoYiEUoy/XC821m9X5Ow4GAFvQOWPuIHOIpVzRRnQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cpPoNS+HYQFtxvZ9DrnTIiktv7F2XViEbuf9v5P1Z1yO+xu/0vZmsb4C2GcLcQxVE jZZYblCv1bGuanUxjSrpMpoqvvJMpF2OjS5onvnRHcIJnFO+9dYEu4PHH+J41hnZEw YUVTBml56YvRiHFQeMi2YwjdqkaV2SX2ZFJ9pN5A= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jesse Zhang , Tim Huang , Alex Deucher , Sasha Levin Subject: [PATCH 5.15 013/214] drm/amd/pm: fix the Out-of-bounds read warning Date: Tue, 10 Sep 2024 11:30:35 +0200 Message-ID: <20240910092559.266043050@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240910092558.714365667@linuxfoundation.org> References: <20240910092558.714365667@linuxfoundation.org> User-Agent: quilt/0.67 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jesse Zhang [ Upstream commit 12c6967428a099bbba9dfd247bb4322a984fcc0b ] using index i - 1U may beyond element index for mc_data[] when i = 0. Signed-off-by: Jesse Zhang Reviewed-by: Tim Huang Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c index f503e61faa60..cc3b62f73394 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c @@ -73,8 +73,9 @@ static int atomctrl_retrieve_ac_timing( j++; } else if ((table->mc_reg_address[i].uc_pre_reg_data & LOW_NIBBLE_MASK) == DATA_EQU_PREV) { - table->mc_reg_table_entry[num_ranges].mc_data[i] = - table->mc_reg_table_entry[num_ranges].mc_data[i-1]; + if (i) + table->mc_reg_table_entry[num_ranges].mc_data[i] = + table->mc_reg_table_entry[num_ranges].mc_data[i-1]; } } num_ranges++; -- 2.43.0