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Message-ID: <6bffcb0e0607110802w4f423854rb340227331084596@mail.gmail.com>
Date: Tue, 11 Jul 2006 17:02:59 +0200
From: "Michal Piotrowski" <michal.k.k.piotrowski@gmail.com>
To: "Catalin Marinas" <catalin.marinas@gmail.com>
Subject: Re: [PATCH 00/10] Kernel memory leak detector 0.8
Cc: linux-kernel@vger.kernel.org
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On 11/07/06, Catalin Marinas <catalin.marinas@gmail.com> wrote:
> On 11/07/06, Michal Piotrowski <michal.k.k.piotrowski@gmail.com> wrote:
> > System hangs when I try "cat /sys/kernel/debug/memleak". Here is what
> > I found in a log file.
>
> Can you disable DEBUG_MEMLEAK_ORPHAN_FREEING? That's mainly used for
> debugging but I don't think it is was causing the hang. I haven't
> changed the locking mechanism since version 0.7 but maybe some other
> bug made its way in.

It is DEBUG_MEMLEAK_ORPHAN_FREEING issue. Disabling it solved the problem.

orphan pointer 0xc6113bec (size 28):
  c017392a: <__kmalloc_track_caller>
  c01631b1: <__kzalloc>
  c010b7d7: <legacy_init_iomem_resources>
  c010b89c: <request_standard_resources>
  c0100b8b: <do_initcalls>
  c0100c3d: <do_basic_setup>
  c0100cdb: <init>

This is most common
orphan pointer 0xf5a6fd60 (size 39):
  c0173822: <__kmalloc>
  c01df500: <context_struct_to_string>
  c01df679: <security_sid_to_context>
  c01d7eee: <selinux_socket_getpeersec_dgram>
  f884f019: <unix_get_peersec_dgram>
  f8850698: <unix_dgram_sendmsg>
  c02a88c2: <sock_sendmsg>
  c02a9c7a: <sys_sendto>

cat /tmp/ml.txt | grep -c selinux_socket_getpeersec_dgram
8442

>
> --
> Catalin
>

Regards,
Michal

-- 
Michal K. K. Piotrowski
LTG - Linux Testers Group
(http://www.stardust.webpages.pl/ltg/wiki/)