| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <202501051919.A2xmLCN8-lkp@intel.com>
Date: Sun, 5 Jan 2025 20:02:29 +0800
From: kernel test robot <lkp@...el.com>
To: Jani Nikula <jani.nikula@...el.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Philipp Zabel <p.zabel@...gutronix.de>
Subject: drivers/gpu/drm/imx/ipuv3/imx-ldb.c:658:57: warning: '_sel'
directive output may be truncated writing 4 bytes into a region of size
between 3 and 13
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ab75170520d4964f3acf8bb1f91d34cbc650688e
commit: 03ee752f00fd0daa082b43774cfd03a7f9a17385 drm/imx: prefer snprintf over sprintf
date: 11 months ago
config: csky-randconfig-r053-20231127 (https://download.01.org/0day-ci/archive/20250105/202501051919.A2xmLCN8-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 12.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250105/202501051919.A2xmLCN8-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501051919.A2xmLCN8-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/gpu/drm/imx/ipuv3/imx-ldb.c: In function 'imx_ldb_probe':
>> drivers/gpu/drm/imx/ipuv3/imx-ldb.c:658:57: warning: '_sel' directive output may be truncated writing 4 bytes into a region of size between 3 and 13 [-Wformat-truncation=]
658 | snprintf(clkname, sizeof(clkname), "di%d_sel", i);
| ^~~~
drivers/gpu/drm/imx/ipuv3/imx-ldb.c:658:17: note: 'snprintf' output between 8 and 18 bytes into a destination of size 16
658 | snprintf(clkname, sizeof(clkname), "di%d_sel", i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/_sel +658 drivers/gpu/drm/imx/ipuv3/imx-ldb.c
617
618 static int imx_ldb_probe(struct platform_device *pdev)
619 {
620 struct device *dev = &pdev->dev;
621 struct device_node *np = dev->of_node;
622 struct device_node *child;
623 struct imx_ldb *imx_ldb;
624 int dual;
625 int ret;
626 int i;
627
628 imx_ldb = devm_kzalloc(dev, sizeof(*imx_ldb), GFP_KERNEL);
629 if (!imx_ldb)
630 return -ENOMEM;
631
632 imx_ldb->regmap = syscon_regmap_lookup_by_phandle(np, "gpr");
633 if (IS_ERR(imx_ldb->regmap)) {
634 dev_err(dev, "failed to get parent regmap\n");
635 return PTR_ERR(imx_ldb->regmap);
636 }
637
638 /* disable LDB by resetting the control register to POR default */
639 regmap_write(imx_ldb->regmap, IOMUXC_GPR2, 0);
640
641 imx_ldb->dev = dev;
642 imx_ldb->lvds_mux = device_get_match_data(dev);
643
644 dual = of_property_read_bool(np, "fsl,dual-channel");
645 if (dual)
646 imx_ldb->ldb_ctrl |= LDB_SPLIT_MODE_EN;
647
648 /*
649 * There are three different possible clock mux configurations:
650 * i.MX53: ipu1_di0_sel, ipu1_di1_sel
651 * i.MX6q: ipu1_di0_sel, ipu1_di1_sel, ipu2_di0_sel, ipu2_di1_sel
652 * i.MX6dl: ipu1_di0_sel, ipu1_di1_sel, lcdif_sel
653 * Map them all to di0_sel...di3_sel.
654 */
655 for (i = 0; i < 4; i++) {
656 char clkname[16];
657
> 658 snprintf(clkname, sizeof(clkname), "di%d_sel", i);
659 imx_ldb->clk_sel[i] = devm_clk_get(imx_ldb->dev, clkname);
660 if (IS_ERR(imx_ldb->clk_sel[i])) {
661 ret = PTR_ERR(imx_ldb->clk_sel[i]);
662 imx_ldb->clk_sel[i] = NULL;
663 break;
664 }
665
666 imx_ldb->clk_parent[i] = clk_get_parent(imx_ldb->clk_sel[i]);
667 }
668 if (i == 0)
669 return ret;
670
671 for_each_child_of_node(np, child) {
672 struct imx_ldb_channel *channel;
673 int bus_format;
674
675 ret = of_property_read_u32(child, "reg", &i);
676 if (ret || i < 0 || i > 1) {
677 ret = -EINVAL;
678 goto free_child;
679 }
680
681 if (!of_device_is_available(child))
682 continue;
683
684 if (dual && i > 0) {
685 dev_warn(dev, "dual-channel mode, ignoring second output\n");
686 continue;
687 }
688
689 channel = &imx_ldb->channel[i];
690 channel->ldb = imx_ldb;
691 channel->chno = i;
692
693 /*
694 * The output port is port@4 with an external 4-port mux or
695 * port@2 with the internal 2-port mux.
696 */
697 ret = drm_of_find_panel_or_bridge(child,
698 imx_ldb->lvds_mux ? 4 : 2, 0,
699 &channel->panel, &channel->bridge);
700 if (ret && ret != -ENODEV)
701 goto free_child;
702
703 /* panel ddc only if there is no bridge */
704 if (!channel->bridge) {
705 ret = imx_ldb_panel_ddc(dev, channel, child);
706 if (ret)
707 goto free_child;
708 }
709
710 bus_format = of_get_bus_format(dev, child);
711 if (bus_format == -EINVAL) {
712 /*
713 * If no bus format was specified in the device tree,
714 * we can still get it from the connected panel later.
715 */
716 if (channel->panel && channel->panel->funcs &&
717 channel->panel->funcs->get_modes)
718 bus_format = 0;
719 }
720 if (bus_format < 0) {
721 dev_err(dev, "could not determine data mapping: %d\n",
722 bus_format);
723 ret = bus_format;
724 goto free_child;
725 }
726 channel->bus_format = bus_format;
727 channel->child = child;
728 }
729
730 platform_set_drvdata(pdev, imx_ldb);
731
732 return component_add(&pdev->dev, &imx_ldb_ops);
733
734 free_child:
735 of_node_put(child);
736 return ret;
737 }
738
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Powered by blists - more mailing lists