From: David Howells <dhowells@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: dhowells@redhat.com, Vegard Nossum <vegard.nossum@gmail.com>,
Serge Hallyn <serue@us.ibm.com>,
LKML <linux-kernel@vger.kernel.org>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
Eric Sesterhenn <snakebyte@gmx.de>,
Andrew Morton <akpm@linux-foundation.org>,
containers@lists.osdl.org
Subject: Re: [CRED bug?] 2.6.29-rc3 don't survive on stress workload
Date: Wed, 11 Feb 2009 12:54:06 +0000 [thread overview]
Message-ID: <27972.1234356846@redhat.com> (raw)
In-Reply-To: <20090211212208.C3C6.KOSAKI.MOTOHIRO@jp.fujitsu.com>
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
> f6 : 1003e6b6b6b6b6b6b6b6b f7 : 0ffe6af8e85a500000000
I'd guess you now have CONFIG_DEBUG_SLAB turned on. That looks like slab
poisoning in register f6.
> r17 : 00000000dead4ead r18 : a000000100cd2274 r19 : a000000100d6b6c0
And that looks like SPINLOCK_MAGIC in r17, so I'd guess something just
successfully validated a spinlock, possibly atomic_dec_and_lock() in
free_uid().
This may mean that the user_struct being released is valid, but the
user_namespace it refers to is already released.
David
prev parent reply other threads:[~2009-02-11 12:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090210142443.629E.KOSAKI.MOTOHIRO@jp.fujitsu.com>
[not found] ` <19f34abd0902092310g513fb776s2e4d37285c8fa7be@mail.gmail.com>
2009-02-11 12:25 ` [CRED bug?] 2.6.29-rc3 don't survive on stress workload KOSAKI Motohiro
2009-02-11 12:54 ` David Howells [this message]
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