linux-kernel - Re: [BUG] kernel BUG at mm/vmacache.c:85!

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Message-ID: <CA+55aFyWj3aT4Re4AHKXLrrf3eEheTWH8-q6muU++9FrgaKigA@mail.gmail.com>
Date:	Wed, 30 Apr 2014 13:26:12 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
Cc:	Davidlohr Bueso <davidlohr@...com>,
	Hugh Dickins <hughd@...gle.com>, Linux MM <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rik van Riel <riel@...hat.com>,
	Michel Lespinasse <walken@...gle.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>, Dave Jones <davej@...hat.com>
Subject: Re: [BUG] kernel BUG at mm/vmacache.c:85!

On Wed, Apr 30, 2014 at 12:16 PM, Srivatsa S. Bhat
<srivatsa.bhat@...ux.vnet.ibm.com> wrote:
>
> So I tried the same recipe again (boot into 3.7.7 and kexec into 3.15-rc3+)
> and I got totally random crashes so far, once in sys_kill and two times in
> exit_mmap. So I guess the bug is in 3.7.x and probably 3.15-rc is fine after
> all...

Yeah, ok, that sounds more likely. Random memory corruption due to
kexec having done something horribly bad.

              Linus
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