Messages in this thread | | | Date | Fri, 16 May 2008 19:55:39 -0600 | From | Robert Hancock <> | Subject | Re: Top kernel oopses/warnings for the week of May 16th 2008 |
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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..
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