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Date: Thu, 10 Mar 2022 10:15:37 -0800 From: Kees Cook <keescook@...omium.org> To: luc.vanoostenryck@...il.com, nathan@...nel.org, shuah@...nel.org, mark.rutland@....com, akpm@...ux-foundation.org, tglx@...utronix.de, ndesaulniers@...gle.com, linux@...ck-us.net, gregkh@...uxfoundation.org, catalin.marinas@....com, will@...nel.org, npiggin@...il.com, arnd@...db.de, masahiroy@...nel.org, ojeda@...nel.org, Dan Li <ashimida@...ux.alibaba.com>, elver@...gle.com, samitolvanen@...gle.com Cc: Kees Cook <keescook@...omium.org>, linux-arm-kernel@...ts.infradead.org, linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, linux-kselftest@...r.kernel.org Subject: Re: (subset) [PATCH v3 1/2] AARCH64: Add gcc Shadow Call Stack support On Wed, 2 Mar 2022 23:43:23 -0800, Dan Li wrote: > Shadow call stacks will be available in GCC >= 12, this patch makes > the corresponding kernel configuration available when compiling > the kernel with the gcc. > > Note that the implementation in GCC is slightly different from Clang. > With SCS enabled, functions will only pop x30 once in the epilogue, > like: > > [...] I'm taking this one now so it'll make the merge window. We can hammer out the lkdtm test after that. Applied to for-next/hardening, thanks! [1/2] arm64: Add gcc Shadow Call Stack support https://git.kernel.org/kees/c/afcf5441b9ff -- Kees Cook
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