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* sh64: ascii armor the sh64 boot init stack canaryRik van Riel2017-07-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | Use the ascii-armor canary to prevent unterminated C string overflows from being able to successfully overwrite the canary, even if they somehow obtain the canary value. Inspired by execshield ascii-armor and Daniel Micay's linux-hardened tree. Link: http://lkml.kernel.org/r/20170524123446.78510066@annuminas.surriel.com Signed-off-by: Rik van Riel <riel@redhat.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Daniel Micay <danielmicay@gmail.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Ingo Molnar <mingo@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sh: initial stack protector support.Filippo Arcidiacono2012-04-191-0/+27
This implements basic -fstack-protector support, based on the early ARM version in c743f38013aeff58ef6252601e397b5ba281c633. The SMP case is limited to the initial canary value, while the UP case handles per-task granularity (limited to 32-bit sh until a new enough sh64 compiler manifests itself). Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Reviewed-by: Carmelo Amoroso <carmelo.amoroso@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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