linux-kernel - Re: [tip:x86/asm] x86/entry/32: Switch INT80 to the new C syscall path

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Message-ID: <20151016173446.GK31612@pd.tnic>
Date:	Fri, 16 Oct 2015 19:34:46 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	"linux-tip-commits@...r.kernel.org" 
	<linux-tip-commits@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Lutomirski <luto@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Brian Gerst <brgerst@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [tip:x86/asm] x86/entry/32: Switch INT80 to the new C syscall
 path

On Fri, Oct 16, 2015 at 08:59:23AM -0700, Andy Lutomirski wrote:
> Wow I am incompetent.

Bah, it can happen to anyone...

>     set_system_trap_gate(IA32_SYSCALL_VECTOR, entry_INT80_32);
> 
> How did I not catch that in testing?  Can you change that to
> set_system_intr_gate and see if that helps?

Yeah, that was it. Well spotted, thanks!

Reported-and-tested-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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