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[Qemu-devel] Re: UPD: qemu-kvm 0.12.5 virtio-net page allocation error


From: Peter Lieven
Subject: [Qemu-devel] Re: UPD: qemu-kvm 0.12.5 virtio-net page allocation error
Date: Thu, 07 Oct 2010 17:18:02 +0200
User-agent: Thunderbird 2.0.0.23 (X11/20090817)

Peter Lieven wrote:
Am 03.10.2010 um 01:48 schrieb Peter Lieven:

Hi,

running 0.12.5 with a Ubuntu LTS 10.04.1 64-bit kernel I see the following 
error after a few days with severe load (constant 100-200mbps input).

# uname -a
Linux ubuntu-newsfeed 2.6.32-24-server #43-Ubuntu SMP Thu Sep 16 16:05:42 UTC 
2010 x86_64 GNU/Linux

Linux newsfeed-spool 2.6.27.48-0.2-default seems not affected. I have a machine 
with even higher load (about 300-400mbits constant
network load) up for 4 months without a crash.

Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] swapper: page 
allocation failure. order:0, mode:0x20
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Pid: 0, comm: swapper 
Not tainted 2.6.32-24-server #43-Ub
untu
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Call Trace:
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  <IRQ>  
[<ffffffff810fa7ae>] __alloc_pages_slowpath+0x56e
/0x580
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff810fa931>] 
__alloc_pages_nodemask+0x171/0x180
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8112d817>] 
alloc_pages_current+0x87/0xd0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff813db792>] 
try_fill_recv+0x182/0x200
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff813db9bd>] 
virtnet_poll+0x10d/0x160
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff81473c5f>] 
net_rx_action+0x10f/0x250
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8106e317>] 
__do_softirq+0xb7/0x1e0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff810c4dc0>] ? 
handle_IRQ_event+0x60/0x170
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff810142ec>] 
call_softirq+0x1c/0x30
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff81015cb5>] 
do_softirq+0x65/0xa0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8106e1b5>] 
irq_exit+0x85/0x90
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8155fd25>] 
do_IRQ+0x75/0xf0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff81013b13>] 
ret_from_intr+0x0/0x11
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  <EOI>  
[<ffffffff81038acb>] ? native_safe_halt+0xb/0x10
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8101b69d>] ? 
default_idle+0x3d/0x90
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff81011e63>] ? 
cpu_idle+0xb3/0x110
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8154285b>] ? 
rest_init+0x6b/0x80
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8187edcc>] ? 
start_kernel+0x368/0x371
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8187e33a>] ? 
x86_64_start_reservations+0x125/0x129
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  [<ffffffff8187e438>] ? 
x86_64_start_kernel+0xfa/0x109
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Mem-Info:
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 DMA per-cpu:
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    0: hi:    0, 
btch:   1 usd:   0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    1: hi:    0, 
btch:   1 usd:   0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    2: hi:    0, 
btch:   1 usd:   0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    3: hi:    0, 
btch:   1 usd:   0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 DMA32 per-cpu:
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    0: hi:  186, 
btch:  31 usd:  59
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    1: hi:  186, 
btch:  31 usd: 159
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    2: hi:  186, 
btch:  31 usd: 102
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    3: hi:  186, 
btch:  31 usd: 151
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 Normal per-cpu:
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    0: hi:  186, 
btch:  31 usd:  51
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    1: hi:  186, 
btch:  31 usd: 157
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    2: hi:  186, 
btch:  31 usd: 162
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] CPU    3: hi:  186, 
btch:  31 usd: 175
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] active_anon:1857 
inactive_anon:1602 isolated_anon:0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  active_file:458063 
inactive_file:467825 isolated_file:0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  unevictable:0 
dirty:74195 writeback:18395 unstable:0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  free:5214 
slab_reclaimable:50506 slab_unreclaimable:3256
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029]  mapped:4151 shmem:1592 
pagetables:400 bounce:0
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 DMA free:15896kB 
min:28kB low:32kB high:40kB active_anon:0kB inactive_anon:0kB active_fil
e:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB 
present:15336kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB s
lab_reclaimable:0kB slab_unreclaimable:8kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] lowmem_reserve[]: 0 
3512 4017 4017
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 DMA32 
free:4652kB min:7076kB low:8844kB high:10612kB active_anon:3832kB 
inactive_anon:110
8kB active_file:1642896kB inactive_file:1680672kB unevictable:0kB 
isolated(anon):0kB isolated(file):0kB present:3596500kB mlocked:0kB 
dirty:262008kB wri
teback:61820kB mapped:10184kB shmem:2812kB slab_reclaimable:170892kB 
slab_unreclaimable:4164kB kernel_stack:8kB pagetables:512kB unstable:0kB 
bounce:0kB
writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] lowmem_reserve[]: 0 0 
505 505
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 Normal 
free:308kB min:1016kB low:1268kB high:1524kB active_anon:3596kB 
inactive_anon:5300
kB active_file:189356kB inactive_file:190628kB unevictable:0kB 
isolated(anon):0kB isolated(file):0kB present:517120kB mlocked:0kB 
dirty:34772kB writebac
k:11760kB mapped:6420kB shmem:3556kB slab_reclaimable:31132kB 
slab_unreclaimable:8852kB kernel_stack:1160kB pagetables:1088kB unstable:0kB 
bounce:0kB wr
iteback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] lowmem_reserve[]: 0 0 0 0
Oct 2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 DMA: 2*4kB 4*8kB 5*16kB 3*32kB 3*64kB 1*128kB 2*256kB 1*512kB 2*1024kB 2*2048kB 2*4096kB = 15896kB
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 DMA32: 607*4kB 
72*8kB 0*16kB 1*32kB 0*64kB 1*128kB 3*256kB 1*512kB 0*1024kB 0*2048kB 0*40
96kB = 4444kB
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Node 0 Normal: 27*4kB 
3*8kB 2*16kB 0*32kB 1*64kB 1*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*409
6kB = 356kB
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] 927861 total pagecache 
pages
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] 296 pages in swap cache
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Swap cache stats: add 
797, delete 501, find 10963/10986
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Free swap  = 3905004kB
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] Total swap = 3906552kB
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] 1048576 pages RAM
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] 34105 pages reserved
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] 668525 pages shared
Oct  2 10:09:35 ubuntu-newsfeed kernel: [248407.790029] 344067 pages non-shared

Is this anything known?

After this error, the network device hangs. However, it can be recovered by 
setting ip link down and up again.

BR,
Peter

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