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From: Catalin Marinas <catalin.marinas@arm.com>
To: Denis Kirjanov <kda@linux-powerpc.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: kmemleak: Unable to handle kernel paging request
Date: Wed, 11 Jun 2014 18:38:51 +0100	[thread overview]
Message-ID: <20140611173851.GA5556@MacBook-Pro.local> (raw)
In-Reply-To: <CAOJe8K3fy3XFxDdVc3y1hiMAqUCPmkUhECU7j5TT=E=gxwBqHg@mail.gmail.com>

On Wed, Jun 11, 2014 at 04:13:07PM +0400, Denis Kirjanov wrote:
> I got a trace while running 3.15.0-08556-gdfb9454:
> 
> [  104.534026] Unable to handle kernel paging request for data at
> address 0xc00000007f000000

Were there any kmemleak messages prior to this, like "kmemleak
disabled"? There could be a race when kmemleak is disabled because of
some fatal (for kmemleak) error while the scanning is taking place
(which needs some more thinking to fix properly).

Thanks.

-- 
Catalin

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WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Denis Kirjanov <kda@linux-powerpc.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: kmemleak: Unable to handle kernel paging request
Date: Wed, 11 Jun 2014 18:38:51 +0100	[thread overview]
Message-ID: <20140611173851.GA5556@MacBook-Pro.local> (raw)
In-Reply-To: <CAOJe8K3fy3XFxDdVc3y1hiMAqUCPmkUhECU7j5TT=E=gxwBqHg@mail.gmail.com>

On Wed, Jun 11, 2014 at 04:13:07PM +0400, Denis Kirjanov wrote:
> I got a trace while running 3.15.0-08556-gdfb9454:
> 
> [  104.534026] Unable to handle kernel paging request for data at
> address 0xc00000007f000000

Were there any kmemleak messages prior to this, like "kmemleak
disabled"? There could be a race when kmemleak is disabled because of
some fatal (for kmemleak) error while the scanning is taking place
(which needs some more thinking to fix properly).

Thanks.

-- 
Catalin

  reply	other threads:[~2014-06-11 17:38 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-11 12:13 kmemleak: Unable to handle kernel paging request Denis Kirjanov
2014-06-11 12:13 ` Denis Kirjanov
2014-06-11 17:38 ` Catalin Marinas [this message]
2014-06-11 17:38   ` Catalin Marinas
2014-06-11 20:04   ` Denis Kirjanov
2014-06-11 20:04     ` Denis Kirjanov
2014-06-11 22:00     ` Catalin Marinas
2014-06-11 22:00       ` Catalin Marinas
2014-06-12  7:39       ` Denis Kirjanov
2014-06-12  7:39         ` Denis Kirjanov
2014-06-12 12:00         ` Denis Kirjanov
2014-06-12 12:00           ` Denis Kirjanov
2014-06-12 13:29           ` Naoya Horiguchi
2014-06-12 14:39           ` Catalin Marinas
2014-06-12 14:39             ` Catalin Marinas
2014-06-13  7:12             ` Denis Kirjanov
2014-06-13  7:12               ` Denis Kirjanov
2014-06-13  8:56               ` Catalin Marinas
2014-06-13  8:56                 ` Catalin Marinas
2014-06-13  8:56                 ` Catalin Marinas
2014-06-13 10:26                 ` Denis Kirjanov
2014-06-13 10:26                   ` Denis Kirjanov
2014-06-13 10:26                   ` Denis Kirjanov
2014-06-16  2:40                   ` Michael Ellerman
2014-06-16  2:40                     ` Michael Ellerman
2014-06-13 21:44                 ` Benjamin Herrenschmidt
2014-06-13 21:44                   ` Benjamin Herrenschmidt
2014-06-14 12:05                   ` Catalin Marinas
2014-06-14 12:05                     ` Catalin Marinas
2014-06-14 12:05                     ` Catalin Marinas
     [not found]           ` <5399ab3b.4825e00a.60fd.5014SMTPIN_ADDED_BROKEN@mx.google.com>
2014-06-13  6:39             ` Denis Kirjanov
2014-06-13  6:39               ` Denis Kirjanov

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