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Groups > linux.kernel > #1416671
| From | Kees Cook <keescook@chromium.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 0/5] lkdtm: add usercopy and rodata, fix atomic |
| Date | 2016-06-08 00:00 +0200 |
| Message-ID | <rHxct-85W-11@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
This adds several new tests to lkdtm. To test non-executability of .rodata, lkdtm's build method shifted around a bit requiring a source file rename. But after some objcopy magic, there is now an architecture-agnostic way to write functions into .rodata. The atomic under/overflow test was split so that each case could be individually tested. The biggest addition are the usercopy tests (in preparation for CONFIG_HARDENED_USERCOPY, based on grsecurity/PaX's PAX_USERCOPY). This tests both directions (copy_to_from, copy_from_user) of the three error conditions that are checked for: wrong object size, wrong stack frame, and wrong object markings. Unless anyone has blocking comments, I'll send a pull to Greg for this to land in -next soon. -Kees
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[PATCH 0/5] lkdtm: add usercopy and rodata, fix atomic Kees Cook <keescook@chromium.org> - 2016-06-08 00:00 +0200
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