From: Michel Lespinasse <walken@google.com>
To: Jiri Slaby <jslaby@suse.cz>
Cc: linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Jiri Slaby <jirislaby@gmail.com>
Subject: Re: BUG at mm/huge_memory.c:1428!
Date: Thu, 13 Sep 2012 15:46:30 -0700 [thread overview]
Message-ID: <CANN689E0SaT9vaBb+snwYrP728GjZhRj7o7T4GoNfQVY7sBr7Q@mail.gmail.com> (raw)
In-Reply-To: <50522275.7090709@suse.cz>
On Thu, Sep 13, 2012 at 11:14 AM, Jiri Slaby <jslaby@suse.cz> wrote:
> Hi,
>
> I've just get the following BUG with today's -next. It happens every
> time I try to update packages.
>
> kernel BUG at mm/huge_memory.c:1428!
That is very likely my bug.
Do you have the message that should be printed right above the bug ?
( printk(KERN_ERR "mapcount %d page_mapcount %d\n",
mapcount, page_mapcount(page));
)
Do you get any errors if building with CONFIG_DEBUG_VM and CONFIG_DEBUG_VM_RB ?
Does it go away if you revert "mm: avoid taking rmap locks in
move_ptes()" (cc0eac2e50f036d4d798b18679ca2ae3c4828105 in the -next
version I have here) ?
--
Michel "Walken" Lespinasse
A program is never fully debugged until the last user dies.
next prev parent reply other threads:[~2012-09-13 22:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 18:14 BUG at mm/huge_memory.c:1428! Jiri Slaby
2012-09-13 22:46 ` Michel Lespinasse [this message]
2012-09-14 19:28 ` Jiri Slaby
2012-09-17 15:39 ` Jiri Slaby
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