Bug#764223: booting eder.debian.org fails
Hi,
On Mon Oct 06, 2014 at 17:06:23 +0100, Ben Hutchings wrote:
> On Mon, 2014-10-06 at 13:20 +0000, Martin Zobel-Helas wrote:
> > Source: linux-image-loongson-2e
> > Version: 3.16+61~bpo70+1
> > Severity: grave
> >
> > Booting eder.debian.org with this kernel fails while booting
> > linux-image-3.14-0.bpo.2-loongson-2e works just fine:
> [...]
> > [ 4.700000] swapper: page allocation failure: order:0, mode:0x10d1
> > [ 4.708000] CPU: 0 PID: 1 Comm: swapper Not tainted 3.16-0.bpo.2-loongson-2e #1 Debian 3.16.3-2~bpo70+1
> > [ 4.716000] Stack : 0000000000008000 ffffffff803f4f98 ffffffff80950000 ffffffff80953908
> > 0000000000000000 0000000000000000 ffffffff8074cec8 ffffffff8080b267
> > 0000000000000001 0000000000000040 00000000000010d1 0000000000000000
> > 0000000000000000 ffffffff80800000 0000000000000000 ffffffff806582d0
> > 0000000000000000 980000004e0777f8 00000000000010d1 ffffffff801781cc
> > 980000004e073930 ffffffff8074cec8 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000 00ffffff8080b226 0000000000000000
> > 0000000000000000 980000004e077750 0000000000000000 ffffffff801f6904
> > 0000000000000000 00000000b54c6fb4 00000000000010d1 0000000000000000
> > 0000000000000001 ffffffff80109c60 ffffffff8088ef28 ffffffff801f6904
> > ...
> > [ 4.784000] Call Trace:
> > [ 4.788000] [<ffffffff80109c60>] show_stack+0x78/0x90
> > [ 4.792000] [<ffffffff801f6904>] warn_alloc_failed+0xfc/0x140
> > [ 4.800000] [<ffffffff801f9f7c>] __alloc_pages_nodemask+0x7c4/0xa30
> > [ 4.808000] [<ffffffff801fa20c>] __get_free_pages+0x24/0xa0
> > [ 4.812000] [<ffffffff80119bec>] mips_dma_alloc_coherent+0x10c/0x1e0
> > [ 4.820000] [<ffffffff804ac320>] dmam_alloc_coherent+0x80/0xf8
> > [ 4.824000] [<ffffffff804ec978>] ata_bmdma_port_start+0x48/0x78
>
> So we couldn't allocate memory for a DMA buffer (using GFP_KERNEL |
> __GFP_NORETRY | GFP_DMA).
>
> [...]
> > [ 4.972000] DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:16384kB managed:0kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
> [...]
>
> And we have no memory available in the DMA zone. But this is an ISA DMA
> zone (first 16 MB of bus addresses). Why would it need memory in that
> range? Maybe its DMA mask is no longer initialised correctly (pata_via
> doesn't set it explicitly, but for PCI devices it should normally be set
> to DMA_BIT_MASK(32) by default).
>
> Can you test some intermediate kernel versions to narrow this down?
> There should be several on snapshot.debian.org.
zobel@eder:~% uname -a
Linux eder 3.16-rc5-loongson-2e #1 Debian 3.16~rc5-1~exp1 (2014-07-15) mips64 GNU/Linux
The 3.16rc5 kernel still boots. Hope that helps to narrow down the problem.
Cheers,
Martin
--
Martin Zobel-Helas <zobel@debian.org> Debian System Administrator
Debian & GNU/Linux Developer Debian Listmaster
http://about.me/zobel Debian Webmaster
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