From: Robert Hancock <hancockr@shaw.ca>
To: Arjan van de Ven <arjan@linux.intel.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
NetDev <netdev@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jeff Garzik <jgarzik@pobox.com>,
andrea@qumranet.com, Jens Axboe <jens.axboe@oracle.com>
Subject: Re: Top kernel oopses/warnings for the week of May 16th 2008
Date: Fri, 16 May 2008 19:55:39 -0600 [thread overview]
Message-ID: <482E3B1B.9070400@shaw.ca> (raw)
In-Reply-To: <fa.LFS/TATb5YijFetLw6A+gczrVAQ@ifi.uio.no>
Arjan van de Ven wrote:
> Rank 10: __alloc_pages
> Reported 16 times (31 total reports)
> Sleeping allocation in interrupt context, some in netlink, some in
> the nv sata driver
> This oops was last seen in version 2.6.25.3, and first seen in
> 2.6.18-rc1.
> More info:
> http://www.kerneloops.org/searchweek.php?search=__alloc_pages
In the case of the sata_nv error, it appears this is happening now
because blk_queue_bounce_limit is initializing emergency ISA pools which
can't be done under spinlock. This is happening because the code in
blk_queue_bounce_limit now thinks that a 32-bit DMA mask requires
allocating with GFP_DMA. This is only needed for a DMA mask less than
32-bit, which is what the original code did. It looks like this was
broken by this commit:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=00d61e3e8c12d5f395b167856d2b3c430816afb0
author Andrea Arcangeli <andrea@qumranet.com>
Wed, 2 Apr 2008 07:06:44 +0000 (09:06 +0200)
committer Jens Axboe <jens.axboe@oracle.com>
Wed, 2 Apr 2008 07:06:44 +0000 (09:06 +0200)
Fix bounce setting for 64-bit
Not sure what this was intended to fix, but I don't think it's right..
next parent reply other threads:[~2008-05-17 1:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.LFS/TATb5YijFetLw6A+gczrVAQ@ifi.uio.no>
2008-05-17 1:55 ` Robert Hancock [this message]
2008-05-17 14:12 ` Top kernel oopses/warnings for the week of May 16th 2008 Andrea Arcangeli
2008-05-17 14:57 ` Arjan van de Ven
2008-05-17 20:34 ` Andrea Arcangeli
2008-05-17 17:38 ` Robert Hancock
[not found] <fa.d+EaKQa5MirlzoI/uZKGy3xe0h0@ifi.uio.no>
[not found] ` <fa.TM0B9DZ+uvPYd9hbDhfuRgtReEk@ifi.uio.no>
[not found] ` <fa.aEHVuArwNEvL0BbdjUyZdMtgx5s@ifi.uio.no>
[not found] ` <fa.Td5KtiJWRKP94D9KrvGd+GkHdW0@ifi.uio.no>
[not found] ` <fa.wtWnOZVeQ06/16BVE5ml7FVHP+c@ifi.uio.no>
2008-05-19 2:23 ` Robert Hancock
2008-05-16 16:41 Arjan van de Ven
2008-05-16 17:14 ` Evgeniy Polyakov
2008-05-16 18:04 ` Adrian Bunk
2008-05-16 18:19 ` Arjan van de Ven
2008-05-20 3:53 ` Dave Jones
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