leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

binfmt_elf: Introduce KUnit test

Browse Source 
Adds simple KUnit test for some binfmt_elf internals: specifically a
regression test for the problem fixed by commit 8904d9cd90ee ("ELF:
fix overflow in total mapping size calculation").

$ ./tools/testing/kunit/kunit.py run --arch x86_64 \
    --kconfig_add CONFIG_IA32_EMULATION=y '*binfmt_elf'
...
[19:41:08] ================== binfmt_elf (1 subtest) ==================
[19:41:08] [PASSED] total_mapping_size_test
[19:41:08] =================== [PASSED] binfmt_elf ====================
[19:41:08] ============== compat_binfmt_elf (1 subtest) ===============
[19:41:08] [PASSED] total_mapping_size_test
[19:41:08] ================ [PASSED] compat_binfmt_elf ================
[19:41:08] ============================================================
[19:41:08] Testing complete. Passed: 2, Failed: 0, Crashed: 0, Skipped: 0, Errors: 0

Cc: Eric Biederman <ebiederm@xmission.com>
Cc: David Gow <davidgow@google.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Magnus Groß" <magnus.gross@rwth-aachen.de>
Cc: kunit-dev@googlegroups.com
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
v1: https://lore.kernel.org/lkml/20220224054332.1852813-1-keescook@chromium.org
v2:
 - improve commit log
 - fix comment URL (Daniel)
 - drop redundant KUnit Kconfig help info (Daniel)
 - note in Kconfig help that COMPAT builds add a compat test (David)
This commit is contained in:
Kees Cook
2022-02-23 19:32:10 -08:00
parent 4f0bfdfd83
commit 9e1a3ce0a9
4 changed files with 80 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
fs/compat_binfmt_elf.c
View File

@@ -135,6 +135,8 @@
#define elf_format compat_elf_format
#define init_elf_binfmt init_compat_elf_binfmt
#define exit_elf_binfmt exit_compat_elf_binfmt
#define binfmt_elf_test_cases compat_binfmt_elf_test_cases
#define binfmt_elf_test_suite compat_binfmt_elf_test_suite
/*
* We share all the actual code with the native (64-bit) version.