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Date: Fri, 16 May 2008 19:55:39 -0600 From: Robert Hancock <hancockr@...w.ca> To: Arjan van de Ven <arjan@...ux.intel.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, NetDev <netdev@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Jeff Garzik <jgarzik@...ox.com>, andrea@...ranet.com, Jens Axboe <jens.axboe@...cle.com> Subject: Re: Top kernel oopses/warnings for the week of May 16th 2008 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@...ranet.com> Wed, 2 Apr 2008 07:06:44 +0000 (09:06 +0200) committer Jens Axboe <jens.axboe@...cle.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.. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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