linux-kernel - Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 on 3.5-rc6

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Message-ID: <CAFLxGvzkx6e19Gj=vKj3yjW3Yjj3eBx1SbGkmdbTMK6WMtX5Bg@mail.gmail.com>
Date:	Sat, 14 Jul 2012 16:22:28 +0200
From:	richard -rw- weinberger <richard.weinberger@...il.com>
To:	"devendra.aaru" <devendra.aaru@...il.com>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Jiri Kosina <jkosina@...e.cz>,
	Darren Hart <dvhart@...ux.intel.com>,
	Kees Cook <keescook@...omium.org>, a.p.zijlstra@...llo.nl
Subject: Re: BUG: unable to handle kernel NULL pointer dereference at
 0000000000000010 on 3.5-rc6

On Sat, Jul 14, 2012 at 2:11 PM, devendra.aaru <devendra.aaru@...il.com> wrote:
> 3.5-rc6 with git head at fdb1335a82e. (from Torvald's branch)

CC'in futex guys...

> dmesg:
>
> [43610.535421] BUG: unable to handle kernel NULL pointer dereference
> at 0000000000000010

Is this the first error message in dmesg?
IOW no WARNING before the BUG?

Looks like futex_wait_requeue_pi() was called before  pi_state->pi_mutex got
initialized.

-- 
Thanks,
//richard
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