linux-kernel - Re: [PATCH v2] kernel: add kcov code coverage

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Message-ID: <20160114090302.GA27083@node.shutemov.name>
Date:	Thu, 14 Jan 2016 11:03:02 +0200
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Dmitry Vyukov <dvyukov@...gle.com>
Cc:	akpm@...ux-foundation.org, drysdale@...gle.com,
	keescook@...gle.com, quentin.casasnovas@...cle.com,
	sasha.levin@...cle.com, vegard.nossum@...cle.com,
	linux-kernel@...r.kernel.org, edumazet@...gle.com,
	taviso@...gle.com, bhelgaas@...gle.com, syzkaller@...glegroups.com,
	kcc@...gle.com, glider@...gle.com, ryabinin.a.a@...il.com
Subject: Re: [PATCH v2] kernel: add kcov code coverage

Hi,

I've tried to build current -next with the patch. It has few reject, but
nothing major.

Booting the kernel in qemu with CONFIG_KCOV=y has failed. It hangs on
"smpboot: Total of 3 processors activated (9178.27 BogoMIPS)"

The interesting part is that I have only 2 cpu in this setup!

Huh?

CONFIG_KCOV=n works fine.

-- 
 Kirill A. Shutemov