linux-kernel - Re: Multiple potential races on vma->vm

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Message-ID: <alpine.LSU.2.11.1509221151370.11653@eggly.anvils>
Date:	Tue, 22 Sep 2015 11:54:17 -0700 (PDT)
From:	Hugh Dickins <hughd@...gle.com>
To:	Andrey Konovalov <andreyknvl@...gle.com>
cc:	"Kirill A. Shutemov" <kirill@...temov.name>,
	Sasha Levin <sasha.levin@...cle.com>,
	Hugh Dickins <hughd@...gle.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Rik van Riel <riel@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dmitry Vyukov <dvyukov@...gle.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Vlastimil Babka <vbabka@...e.cz>
Subject: Re: Multiple potential races on vma->vm_flags

On Tue, 22 Sep 2015, Andrey Konovalov wrote:
> If anybody comes up with a patch to fix the original issue I easily
> can test it, since I'm hitting "BUG: Bad page state" in a second when
> fuzzing with KTSAN and Trinity.

This "BUG: Bad page state" sounds more serious, but I cannot track down
your report of it: please repost - thanks - though on seeing it, I may
well end up with no ideas.

Hugh
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