Re: 2.6.33-rc6: ext4 triggers warning about high order allocations
From: Michael S. Tsirkin
Date: Wed Feb 03 2010 - 13:01:57 EST
On Wed, Feb 03, 2010 at 10:59:12AM -0600, Eric Sandeen wrote:
> Michael S. Tsirkin wrote:
> > Hi!
> > I got this warning at boot with 2.6.33-rc6:
> >
> > [ 12.374168] ------------[ cut here ]------------
> > [ 12.375798] WARNING: at mm/page_alloc.c:1813 __alloc_pages_nodemask+0x180/0x666()
> > [ 12.377401] Hardware name: 2241B48
> > [ 12.378984] Modules linked in: [last unloaded: scsi_wait_scan]
> > [ 12.380593] Pid: 1, comm: init Not tainted 2.6.33-rc6-aa-nopat #50
> > [ 12.382194] Call Trace:
> > [ 12.383781] [<ffffffff810b6b3e>] ? __alloc_pages_nodemask+0x180/0x666
> > [ 12.385390] [<ffffffff81041cda>] warn_slowpath_common+0x77/0xa4
> > [ 12.386996] [<ffffffff81041d16>] warn_slowpath_null+0xf/0x11
> > [ 12.388577] [<ffffffff810b6b3e>] __alloc_pages_nodemask+0x180/0x666
> > [ 12.390168] [<ffffffff81036a9b>] ? finish_task_switch+0x4b/0xb1
> > [ 12.391758] [<ffffffff810b7036>] __get_free_pages+0x12/0x4f
> > [ 12.393354] [<ffffffff810de892>] __kmalloc+0x42/0x116
> > [ 12.394934] [<ffffffff812405bf>] match_number+0x35/0x98
> > [ 12.396493] [<ffffffff8124064d>] match_int+0xb/0xd
> > [ 12.398045] [<ffffffff81169c8c>] parse_options+0x5fe/0x733
> > [ 12.399594] [<ffffffff811058c3>] ? __wait_on_buffer+0x1f/0x21
> > [ 12.401157] [<ffffffff8116a2dc>] ext4_fill_super+0x373/0x2070
>
> Are you mounting with any interesting options?
>
> -Eric
Hmm yes:
UUID=4670fcf0-09a8-4011-bf25-6e5e97f263c6 / ext4
relatime,errors=remount-ro,auto_da_alloc,commit=300,journal_ioprio=7
UUID=ca47e5ef-0d7a-4471-ace9-bd19295a5da6 /home ext4
relatime,errors=remount-ro,auto_da_alloc,commit=300 1 2
Also I set data=ordered as default in my kernel config.
--
MST
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