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Message-ID: <20080727063521.GA1963@elte.hu>
Date: Sun, 27 Jul 2008 08:35:21 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Al Viro <viro@...IV.linux.org.uk>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org, Jan Kara <jack@....cz>
Subject: Re: [PATCH] lost sysctl fix
* Ingo Molnar <mingo@...e.hu> wrote:
>
> * Al Viro <viro@...IV.linux.org.uk> wrote:
>
> > try_attach() should walk into the matching subdirectory, not the first one...
> >
> > Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
> > ---
> > [and yes, that's what that crap had been]
>
> does this explain the following crash -tip testing just triggered with
> latest -git:
>
> [ 12.293289] calling butterfly_init+0x0/0x14
> [ 12.298036] BUG: unable to handle kernel NULL pointer dereference at 00000004
> [ 12.302065] IP: [<c012c169>] __register_sysctl_paths+0x1af/0x253
> [ 12.308058] *pdpt = 0000000000b81001 *pde = 0000000000000000
> [ 12.314809] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
your patch fixes it.
Tested-by: Ingo Molnar <mingo@...e.hu>
Ingo
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