[Xen-bugs] [Bug 675] page allocation failures

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=675





------- Comment #3 from marc@xxxxxxxxxxxxxxxxxxxx  2009-04-04 15:26 -------
I am also seeing this in the Debian Lenny stock kernel and hypervisor
(3.2.1-amd64):

Apr  4 15:45:12 node00002 kernel: [1095515.054069] __ratelimit: 32 messages
suppressed
Apr  4 15:45:13 node00002 kernel: [1095515.054113] xen-utils-versi: page
allocation failure. order:0, mode:0x20
Apr  4 15:45:13 node00002 kernel: [1095515.054149] Pid: 5548, comm:
xen-utils-versi Not tainted 2.6.26-1-xen-amd64 #1
Apr  4 15:45:13 node00002 kernel: [1095515.054201]
Apr  4 15:45:13 node00002 kernel: [1095515.054202] Call Trace:
Apr  4 15:45:13 node00002 kernel: [1095515.054251]  <IRQ>  [<ffffffff80269875>]
__alloc_pages_internal+0x399/0x3b2
Apr  4 15:45:14 node00002 kernel: [1095515.054309]  [<ffffffffa023ad5a>]
:bridge:br_dev_queue_push_xmit+0x0/0x79
Apr  4 15:45:14 node00002 kernel: [1095515.054349]  [<ffffffff80287514>]
cache_alloc_refill+0x29f/0x55a
Apr  4 15:45:14 node00002 kernel: [1095515.054388]  [<ffffffff80287221>]
kmem_cache_alloc+0x5f/0xb3
Apr  4 15:45:16 node00002 kernel: [1095515.054430]  [<ffffffffa026ec05>]
:nf_conntrack:nf_conntrack_alloc+0xa2/0x110
Apr  4 15:45:21 node00002 kernel: [1095515.054488]  [<ffffffffa026f534>]
:nf_conntrack:nf_conntrack_in+0x1db/0x4fb
Apr  4 15:45:28 node00002 kernel: [1095515.054531]  [<ffffffff803e0130>]
nf_iterate+0x41/0x7d
Apr  4 15:45:33 node00002 kernel: [1095515.054570]  [<ffffffffa023f1d5>]
:bridge:br_nf_pre_routing_finish+0x0/0x29a
Apr  4 15:45:35 node00002 kernel: [1095515.054623]  [<ffffffff803e01c9>]
nf_hook_slow+0x5d/0xbe
Apr  4 15:45:36 node00002 kernel: [1095515.054659]  [<ffffffffa023f1d5>]
:bridge:br_nf_pre_routing_finish+0x0/0x29a
Apr  4 15:45:41 node00002 kernel: [1095515.054719]  [<ffffffffa023ffad>]
:bridge:br_nf_pre_routing+0x5f0/0x617
Apr  4 15:45:55 node00002 kernel: [1095515.054755]  [<ffffffff803e0130>]
nf_iterate+0x41/0x7d
Apr  4 15:46:00 node00002 kernel: [1095515.054793]  [<ffffffffa023b72d>]
:bridge:br_handle_frame_finish+0x0/0x13e
Apr  4 15:46:03 node00002 kernel: [1095515.054829]  [<ffffffff803e01c9>]
nf_hook_slow+0x5d/0xbe
Apr  4 15:46:03 node00002 kernel: [1095515.054870]  [<ffffffffa023b72d>]
:bridge:br_handle_frame_finish+0x0/0x13e
Apr  4 15:46:03 node00002 kernel: [1095515.054912]  [<ffffffffa023ba0f>]
:bridge:br_handle_frame+0x1a4/0x1c9
Apr  4 15:46:03 node00002 kernel: [1095515.054949]  [<ffffffff803c5c3e>]
netif_receive_skb+0x2e1/0x3f8
Apr  4 15:46:04 node00002 kernel: [1095515.054984]  [<ffffffffa005fc50>]
:atl1:atl1_intr+0xc93/0xcb9
Apr  4 15:46:04 node00002 kernel: [1095515.055020]  [<ffffffff803c8510>]
process_backlog+0x115/0x145
Apr  4 15:46:04 node00002 kernel: [1095515.055054]  [<ffffffff803c7fb3>]
net_rx_action+0xd9/0x24c
Apr  4 15:46:05 node00002 kernel: [1095515.055089]  [<ffffffff80231c9c>]
__do_softirq+0x77/0x103
Apr  4 15:46:05 node00002 kernel: [1095515.055096]  [<ffffffff8020c13c>]
call_softirq+0x1c/0x28
Apr  4 15:46:05 node00002 kernel: [1095515.055096]  [<ffffffff8020e08a>]
do_softirq+0x55/0xbb
Apr  4 15:46:05 node00002 kernel: [1095515.055096]  [<ffffffff8020e16d>]
do_IRQ+0x7d/0x9a
Apr  4 15:46:11 node00002 kernel: [1095515.055096]  [<ffffffff8037d6a4>]
evtchn_do_upcall+0x13c/0x1fc
Apr  4 15:46:14 node00002 kernel: [1095515.055096]  [<ffffffff8020bbde>]
do_hypervisor_callback+0x1e/0x30
Apr  4 15:46:14 node00002 kernel: [1095515.055096]  <EOI>  [<ffffffff80313007>]
clear_page_c+0x7/0x10
Apr  4 15:46:14 node00002 kernel: [1095515.055096]  [<ffffffff802693be>]
get_page_from_freelist+0x40f/0x518
Apr  4 15:46:15 node00002 kernel: [1095515.055096]  [<ffffffff802695b2>]
__alloc_pages_internal+0xd6/0x3b2
Apr  4 15:46:38 node00002 kernel: [1095515.055096]  [<ffffffff8021c0df>]
pte_alloc_one+0x14/0x49
Apr  4 15:46:15 node00002 kernel: [1095515.055096]  [<ffffffff802695b2>]
__alloc_pages_internal+0xd6/0x3b2
Apr  4 15:46:38 node00002 kernel: [1095515.055096]  [<ffffffff8021c0df>]
pte_alloc_one+0x14/0x49
Apr  4 15:46:39 node00002 kernel: [1095515.055096]  [<ffffffff80273aab>]
__pte_alloc+0x12/0x25e
Apr  4 15:46:49 node00002 kernel: [1095515.055096]  [<ffffffff80276291>]
handle_mm_fault+0x1d5/0xc46
Apr  4 15:46:52 node00002 kernel: [1095515.055096]  [<ffffffff80218197>]
do_page_fault+0xb69/0xf46
Apr  4 15:47:01 node00002 kernel: [1095515.055096]  [<ffffffff803115ef>]
__up_write+0x21/0x10e
Apr  4 15:47:17 node00002 kernel: [1095515.055096]  [<ffffffff80436587>]
error_exit+0x0/0x69
Apr  4 15:47:21 node00002 kernel: [1095515.055096]
Apr  4 15:47:25 node00002 kernel: [1095515.055096] Mem-info:
Apr  4 15:47:28 node00002 kernel: [1095515.055096] DMA per-cpu:
Apr  4 15:47:40 node00002 kernel: [1095515.055096] CPU    0: hi:    0, btch:  
1 usd:   0
Apr  4 15:47:40 node00002 kernel: [1095515.055096] DMA32 per-cpu:
Apr  4 15:47:40 node00002 kernel: [1095515.055096] CPU    0: hi:   90, btch: 
15 usd:  26
Apr  4 15:47:40 node00002 kernel: [1095515.055096] Active:22723 inactive:1559
dirty:22 writeback:0 unstable:0
Apr  4 15:47:40 node00002 kernel: [1095515.055096]  free:437 slab:18504
mapped:1509 pagetables:0 bounce:0
Apr  4 15:47:40 node00002 kernel: [1095515.055096] DMA free:1020kB min:124kB
low:152kB high:184kB active:120kB inactive:0kB present:16160kB pages_scanned:0
\
all_unreclaimable? no
Apr  4 15:47:40 node00002 kernel: [1095515.055096] lowmem_reserve[]: 0 244 244
244
Apr  4 15:47:40 node00002 kernel: [1095515.055096] DMA32 free:728kB min:1936kB
low:2420kB high:2904kB active:90772kB inactive:6236kB present:250480kB pages_\
scanned:0 all_unreclaimable? no
Apr  4 15:47:46 node00002 kernel: [1095515.055096] lowmem_reserve[]: 0 0 0 0
Apr  4 15:47:49 node00002 kernel: [1095515.055096] DMA: 1*4kB 1*8kB 1*16kB
1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 1020kB
Apr  4 15:47:49 node00002 kernel: [1095515.055096] DMA32: 0*4kB 1*8kB 1*16kB
0*32kB 1*64kB 1*128kB 0*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 728kB
Apr  4 15:47:50 node00002 kernel: [1095515.055096] 16241 total pagecache pages
Apr  4 15:47:50 node00002 kernel: [1095515.055096] Swap cache: add 8316829,
delete 8304293, find 5231792/6525939
Apr  4 15:47:50 node00002 kernel: [1095515.055096] Free swap  = 721088kB
Apr  4 15:47:50 node00002 kernel: [1095515.055096] Total swap = 979832kB
Apr  4 15:47:51 node00002 kernel: [1095515.055096] 67584 pages of RAM
Apr  4 15:47:51 node00002 kernel: [1095515.055096] 19019 reserved pages
Apr  4 15:47:51 node00002 kernel: [1095515.055096] 3964 pages shared
Apr  4 15:47:51 node00002 kernel: [1095515.055096] 12536 pages swap cached

It repeated quite a lot of times and ultimately caused the dom0 to be quite
unresponsive. All domUs were OK, and this may have been caused by one domU
thrashing a lot and having a huge load 30-80).


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