linux-kernel - Re: kvm: GPF in kvm_lapic_latched

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 1 Jun 2016 09:59:47 +0200
From:	Dmitry Vyukov <dvyukov@...gle.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	Gleb Natapov <gleb@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"x86@...nel.org" <x86@...nel.org>, KVM list <kvm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	syzkaller <syzkaller@...glegroups.com>,
	Kostya Serebryany <kcc@...gle.com>,
	Alexander Potapenko <glider@...gle.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Sasha Levin <sasha.levin@...cle.com>
Subject: Re: kvm: GPF in kvm_lapic_latched_init

On Tue, May 31, 2016 at 12:35 PM, Paolo Bonzini <pbonzini@...hat.com> wrote:
>
>
> On 08/01/2016 19:42, Dmitry Vyukov wrote:
>> Hello,
>>
>> The following program triggers GPF in kvm_lapic_latched_init if run in
>> a parallel loop:
>> https://gist.githubusercontent.com/dvyukov/524b398f379440b21115/raw/9627095f57a72501fb51bf7565471d31732beeee/gistfile1.txt
>
> I've noticed that the program here tends to segfault a lot, even before
> reaching the kernel.  Is this intended?

Yes.