Re: [PATCH v19 7/7] x86/vdso: Insert endbr32/endbr64 to vDSO
From: Kees Cook <hidden>
Date: 2021-02-04 19:58:01
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On Wed, Feb 03, 2021 at 02:59:02PM -0800, Yu-cheng Yu wrote:
From: "H.J. Lu" <redacted> 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 <redacted>
Reviewed-by: Kees Cook <redacted> -- Kees Cook