Re: [PATCH Part1 v5 23/38] x86/head/64: set up a startup %gs for stack protector
From: Michael Roth <hidden>
Date: 2021-08-30 15:55:53
Also in:
kvm, linux-efi, linux-mm, lkml, platform-driver-x86
On Wed, Aug 25, 2021 at 06:29:31PM +0200, Borislav Petkov wrote:
On Wed, Aug 25, 2021 at 10:18:35AM -0500, Michael Roth wrote:quoted
On Wed, Aug 25, 2021 at 04:29:13PM +0200, Borislav Petkov wrote:quoted
On Fri, Aug 20, 2021 at 10:19:18AM -0500, Brijesh Singh wrote:quoted
From: Michael Roth <redacted> As of commit 103a4908ad4d ("x86/head/64: Disable stack protection for head$(BITS).o") kernel/head64.c is compiled with -fno-stack-protector to allow a call to set_bringup_idt_handler(), which would otherwise have stack protection enabled with CONFIG_STACKPROTECTOR_STRONG. While sufficient for that case, this will still cause issues if we attempt to^^^ I'm tired of repeating the same review comments with you guys: Who's "we"? Please use passive voice in your text: no "we" or "I", etc. Personal pronouns are ambiguous in text, especially with so many parties/companies/etc developing the kernel so let's avoid them please.
That had also been fixed in the commit message fixup that got clobbered, but I still missed it in one of the comments as well so I'll be more careful of this.
How about you pay more attention?
I've been periodically revising/rewording my comments since I saw you're original comments to Brijesh a few versions back, but it's how I normally talk when discussing code with people so it keeps managing to sneak back in. I've added a git hook to check for this and found other instances that need fixing as well, so hopefully with the help of technology I can get them all sorted for the next spin.
quoted
I didn't realize the the 32-bit path was something you were suggesting to have added in this patch, but I'll take a look at that as well.If you're going to remove the -no-stack-protector thing for that file, then pls remove it for both 32- and 64-bit. I.e., the revert what 103a4908ad4d did.
Got it, will do.
--
Regards/Gruss,
Boris.
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