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 0C7A01D514E; Sat, 12 Sep 2026 09:44:14 +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=1789206255; cv=none; b=e6hpwFR594VUxrng1nl0om+Fo9ujFvqRYJr+tTkVn+/yQYwLbBNjDNzUexDiFUFENqQdUS+uebZdXgwZTuAc4YM7oBNpI4wVkPe9gviqN7kODgu2BGz7HYtn9TcSyPWPXunr69JqKLdbXWLBBSVBvy9kiP9VLXvMqHaQF45XQ4g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789206255; c=relaxed/simple; bh=xp3G5T8JSisKPmE25InIJ4HmGzvdZ0HkD4wJP0BTZH4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Th9mOmatQ+Vg6ZYIu1TxEqSgRTkzXhEf7guQxT6SVNYoIho0MaM2Y2/taaecbi5Gxnl71y87W5TxeJ6r4tJqwvABAjE28fhvrWvGKRczRxRy4M2K8CaBZP5/3YW0QtokbP134QwNrhYBBhKncb4eq16F4U5jhbiPHPVfRl5ubZ0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LfVrwzKb; 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="LfVrwzKb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A1D101F000FF; Sat, 12 Sep 2026 09:44:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789206253; bh=3uyd/mT93MECo6LigzuyvqAf7qgRGxaefo0RNsRn4Ec=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=LfVrwzKb/VhThnJu56GvvXesVsj3FNUQFZ0eAjQxqqHF69wtqU7vnr2x4S5GvqdXK quVtq8Xll1REoJJCHqaEMzEE9glUDH17bowPjNqRbYrOweLJOJuhHESc9ig7KdtwTH 6rMh2jPdhUjw+k0FEUjGhLD3JhEH3gzt38iLSlYg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Asad Kamal , Lijo Lazar , Hawking Zhang , Alex Deucher , Sasha Levin Subject: [PATCH 6.18 0168/1518] drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup Date: Sat, 12 Sep 2026 08:38:57 +0200 Message-ID: <20260912065627.298227996@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065623.398859879@linuxfoundation.org> References: <20260912065623.398859879@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 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Asad Kamal [ Upstream commit 3a8a05477cda6c8293e2b629495b42981dcaba32 ] vddInd and vddcInd fields from VBIOS-parsed tables are used to index into voltage lookup tables without a bounds check. Return -EINVAL when any index is out of range. Fixes: c82baa281843 ("drm/amd/powerplay: add Tonga dpm support (v3)") Signed-off-by: Asad Kamal Reviewed-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- .../drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c index 6529a91a613b6..ba953654a0206 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c @@ -2216,12 +2216,24 @@ static int smu7_patch_voltage_dependency_tables_with_lookup_table( if (data->vdd_gfx_control == SMU7_VOLTAGE_CONTROL_BY_SVID2) { for (entry_id = 0; entry_id < sclk_table->count; ++entry_id) { voltage_id = sclk_table->entries[entry_id].vddInd; + if (voltage_id >= table_info->vddgfx_lookup_table->count) { + pr_err("amdgpu: sclk[%u] vddgfx index %u out of bounds (%u)\n", + entry_id, voltage_id, + table_info->vddgfx_lookup_table->count); + return -EINVAL; + } sclk_table->entries[entry_id].vddgfx = table_info->vddgfx_lookup_table->entries[voltage_id].us_vdd; } } else { for (entry_id = 0; entry_id < sclk_table->count; ++entry_id) { voltage_id = sclk_table->entries[entry_id].vddInd; + if (voltage_id >= table_info->vddc_lookup_table->count) { + pr_err("amdgpu: sclk[%u] vddc index %u out of bounds (%u)\n", + entry_id, voltage_id, + table_info->vddc_lookup_table->count); + return -EINVAL; + } sclk_table->entries[entry_id].vddc = table_info->vddc_lookup_table->entries[voltage_id].us_vdd; } @@ -2229,12 +2241,24 @@ static int smu7_patch_voltage_dependency_tables_with_lookup_table( for (entry_id = 0; entry_id < mclk_table->count; ++entry_id) { voltage_id = mclk_table->entries[entry_id].vddInd; + if (voltage_id >= table_info->vddc_lookup_table->count) { + pr_err("amdgpu: mclk[%u] vddc index %u out of bounds (%u)\n", + entry_id, voltage_id, + table_info->vddc_lookup_table->count); + return -EINVAL; + } mclk_table->entries[entry_id].vddc = table_info->vddc_lookup_table->entries[voltage_id].us_vdd; } for (entry_id = 0; entry_id < mm_table->count; ++entry_id) { voltage_id = mm_table->entries[entry_id].vddcInd; + if (voltage_id >= table_info->vddc_lookup_table->count) { + pr_err("amdgpu: mm[%u] vddc index %u out of bounds (%u)\n", + entry_id, voltage_id, + table_info->vddc_lookup_table->count); + return -EINVAL; + } mm_table->entries[entry_id].vddc = table_info->vddc_lookup_table->entries[voltage_id].us_vdd; } -- 2.53.0