From bce7698e2e6565bb765bd0522337f29f5f312624 Mon Sep 17 00:00:00 2001 From: Haojie Li Date: Tue, 25 Aug 2026 18:08:45 +0800 Subject: drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform device platform_device_register_data() can fail and return an ERR_PTR, but the return value is used without checking, leading to an invalid pointer being stored in ddp_comp[].dev and passed to component_match_add() and mtk_ddp_comp_init(), which could result in a kernel crash. Add an IS_ERR() check to jump to the error handling path on failure. Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195") Cc: stable@vger.kernel.org Signed-off-by: Haojie Li Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/ Signed-off-by: Chun-Kuang Hu --- Documentation/admin-guide/LSM/tomoyo.rst | 52 ++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/admin-guide/LSM/tomoyo.rst (limited to 'Documentation/admin-guide/LSM/tomoyo.rst') diff --git a/Documentation/admin-guide/LSM/tomoyo.rst b/Documentation/admin-guide/LSM/tomoyo.rst new file mode 100644 index 000000000..bdb2c2e2a --- /dev/null +++ b/Documentation/admin-guide/LSM/tomoyo.rst @@ -0,0 +1,52 @@ +====== +TOMOYO +====== + +What is TOMOYO? +=============== + +TOMOYO is a name-based MAC extension (LSM module) for the Linux kernel. + +LiveCD-based tutorials are available at + +https://tomoyo.sourceforge.net/1.8/ubuntu12.04-live.html +https://tomoyo.sourceforge.net/1.8/centos6-live.html + +Though these tutorials use non-LSM version of TOMOYO, they are useful for you +to know what TOMOYO is. + +How to enable TOMOYO? +===================== + +Build the kernel with ``CONFIG_SECURITY_TOMOYO=y`` and pass ``security=tomoyo`` on +kernel's command line. + +Please see https://tomoyo.sourceforge.net/2.6/ for details. + +Where is documentation? +======================= + +User <-> Kernel interface documentation is available at +https://tomoyo.sourceforge.net/2.6/policy-specification/index.html . + +Materials we prepared for seminars and symposiums are available at +https://sourceforge.net/projects/tomoyo/files/docs/ . +Below lists are chosen from three aspects. + +What is TOMOYO? + TOMOYO Linux Overview + https://sourceforge.net/projects/tomoyo/files/docs/lca2009-takeda.pdf + TOMOYO Linux: pragmatic and manageable security for Linux + https://sourceforge.net/projects/tomoyo/files/docs/freedomhectaipei-tomoyo.pdf + TOMOYO Linux: A Practical Method to Understand and Protect Your Own Linux Box + https://sourceforge.net/projects/tomoyo/files/docs/PacSec2007-en-no-demo.pdf + +What can TOMOYO do? + Deep inside TOMOYO Linux + https://sourceforge.net/projects/tomoyo/files/docs/lca2009-kumaneko.pdf + The role of "pathname based access control" in security. + https://sourceforge.net/projects/tomoyo/files/docs/lfj2008-bof.pdf + +History of TOMOYO? + Realities of Mainlining + https://sourceforge.net/projects/tomoyo/files/docs/lfj2008.pdf -- cgit v1.3.1