Messages in this thread | | | Date | Thu, 4 Feb 2021 11:50:30 -0800 | From | Kees Cook <> | Subject | Re: [PATCH v19 7/7] x86/vdso: Insert endbr32/endbr64 to vDSO |
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On Wed, Feb 03, 2021 at 02:59:02PM -0800, Yu-cheng Yu wrote: > From: "H.J. Lu" <hjl.tools@gmail.com> > > When Indirect Branch Tracking (IBT) is enabled, vDSO functions may be > called indirectly, and must have ENDBR32 or ENDBR64 as the first > instruction. The compiler must support -fcf-protection=branch so that it > can be used to compile vDSO. > > Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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