linux

selftests/exec: Add binfmt_script regression test While working on commit b5372fe5dc84 ("exec: load_script: Do not exec truncated interpreter path"), I wrote a series of test scripts to verify corner cases. However, soon after, commit 6eb3c3d0a52d ("exec: increase BINPRM_BUF_SIZE to 256") landed, resulting in the tests needing to be refactored for the larger BINPRM_BUF_SIZE, which got lost on my TODO list. During the recent exec refactoring work[1], the need for these tests resurfaced, so I've finished them up for addition to the kernel selftests. [1] https://lore.kernel.org/lkml/202005191144.E3112135@keescook/ Link: https://lkml.kernel.org/r/202005200204.D07DF079@keescook Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> 2020-05-20 02:05:56 -07:00