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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /Documentation/admin-guide/LSM/tomoyo.rst | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'Documentation/admin-guide/LSM/tomoyo.rst')
| -rw-r--r-- | Documentation/admin-guide/LSM/tomoyo.rst | 52 |
1 files changed, 52 insertions, 0 deletions
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 |