Re: [PATCH v19 1/7] x86/cet/ibt: Update Kconfig for user-mode Indirect Branch Tracking

From
Kees Cook <hidden>
Date
2021-02-04 19:51:44
Also in
linux-api, linux-arch, linux-doc, lkml
Reply to
Yu-cheng Yu, 2021-02-03
On Wed, Feb 03, 2021 at 02:58:56PM -0800, Yu-cheng Yu wrote:
Indirect branch tracking is a hardware security feature that verifies near
indirect call/jump instructions arrive at intended targets, which are
labeled by the compiler with ENDBR opcodes.  If such instructions reach
unlabeled locations, the processor raises control-protection faults.

Check the compiler is up-to-date at config time.

Signed-off-by: Yu-cheng Yu <redacted>
Reviewed-by: Kees Cook <redacted>

-- 
Kees Cook
Thread (15 messages) 15 messages, 2 authors, last reply 2021-02-04
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