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

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

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


andy@xxxxxxxxxxxxxx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |andy@xxxxxxxxxxxxxx
             Status|RESOLVED                    |REOPENED
         Resolution|WONTFIX                     |




------- Comment #2 from andy@xxxxxxxxxxxxxx  2008-02-04 18:53 -------
(In reply to comment #1)
> I'm closing this bug in the course of bugzilla 2007 spring cleaning.
> No patch has been attached, and no developer has dealt with it since months,
> so I'm closing it as "wontfix" which matches this fact best.
> Please reopen this bug if it still exists in current Xen versions, and is
> important to you - sorry for the inconvenience in that case.

I am still seeing this using Debian Etch stock xen kernel and hypervisor:

Feb  5 00:04:22 corona kernel: swapper: page allocation failure. order:0,
mode:0x20
Feb  5 00:04:22 corona kernel:  [<c0140759>] __alloc_pages+0x261/0x275
Feb  5 00:04:22 corona kernel:  [<c015622a>] cache_alloc_refill+0x297/0x493
Feb  5 00:04:22 corona kernel:  [<c0104a51>] hypervisor_callback+0x3d/0x48
Feb  5 00:04:22 corona kernel:  [<c020007b>] put_queue+0x7a/0x8b
Feb  5 00:04:22 corona kernel:  [<c0155f7a>] kmem_cache_alloc+0x3b/0x54
Feb  5 00:04:22 corona kernel:  [<c022eb45>] alloc_skb_from_cache+0x48/0x110
Feb  5 00:04:22 corona kernel:  [<c020d8b4>] __alloc_skb+0x6c/0x70
Feb  5 00:04:22 corona kernel:  [<c0215f07>] netif_be_start_xmit+0x118/0x3d5
Feb  5 00:04:22 corona kernel:  [<c023284e>] dev_hard_start_xmit+0x19a/0x1f0
Feb  5 00:04:22 corona kernel:  [<c02341d0>] dev_queue_xmit+0x247/0x2e3
Feb  5 00:04:22 corona kernel:  [<ee415dfe>] br_dev_queue_push_xmit+0x155/0x178
[bridge]
Feb  5 00:04:22 corona kernel:  [<ee415e64>] br_forward_finish+0x43/0x45
[bridge]
Feb  5 00:04:22 corona kernel:  [<ee419ae4>] br_nf_forward_finish+0xc6/0xcc
[bridge]
Feb  5 00:04:22 corona kernel:  [<ee41a34a>] br_nf_forward_arp+0x116/0x128
[bridge]
Feb  5 00:04:22 corona kernel:  [<c0246fd8>] nf_iterate+0x30/0x61
Feb  5 00:04:22 corona kernel:  [<ee415e21>] br_forward_finish+0x0/0x45
[bridge]
Feb  5 00:04:22 corona kernel:  [<c02470fe>] nf_hook_slow+0x3a/0x90
Feb  5 00:04:22 corona kernel:  [<ee415e21>] br_forward_finish+0x0/0x45
[bridge]
Feb  5 00:04:22 corona kernel:  [<ee415eac>] __br_forward+0x46/0x57 [bridge]
Feb  5 00:04:22 corona kernel:  [<ee415e21>] br_forward_finish+0x0/0x45
[bridge]
Feb  5 00:04:22 corona kernel:  [<ee415c59>] br_flood+0x65/0x9d [bridge]
Feb  5 00:04:22 corona kernel:  [<ee415e66>] __br_forward+0x0/0x57 [bridge]
Feb  5 00:04:22 corona kernel:  [<ee415c9b>] br_flood_forward+0xa/0xc [bridge]
Feb  5 00:04:22 corona kernel:  [<ee415e66>] __br_forward+0x0/0x57 [bridge]
Feb  5 00:04:22 corona kernel:  [<ee416868>] br_handle_frame_finish+0x80/0xcf
[bridge]
Feb  5 00:04:22 corona kernel:  [<ee416a16>] br_handle_frame+0x15f/0x179
[bridge]
Feb  5 00:04:22 corona kernel:  [<c02323e1>] netif_receive_skb+0x25e/0x357
Feb  5 00:04:22 corona kernel:  [<ee04b130>] e1000_clean_rx_irq_ps+0x4a6/0x569
[e1000]
Feb  5 00:04:22 corona kernel:  [<ee049c4c>] e1000_clean+0x69/0x136 [e1000]
Feb  5 00:04:22 corona kernel:  [<c0233e90>] net_rx_action+0x96/0x18f
Feb  5 00:04:22 corona kernel:  [<c011f41e>] __do_softirq+0x5e/0xc3
Feb  5 00:04:22 corona kernel:  [<c011f4bd>] do_softirq+0x3a/0x4a
Feb  5 00:04:22 corona kernel:  [<c0106131>] do_IRQ+0x48/0x53
Feb  5 00:04:22 corona kernel:  [<c020c378>] evtchn_do_upcall+0x64/0x9b
Feb  5 00:04:22 corona kernel:  [<c0104a51>] hypervisor_callback+0x3d/0x48
Feb  5 00:04:22 corona kernel:  [<c0107342>] raw_safe_halt+0x8c/0xaf
Feb  5 00:04:22 corona kernel:  [<c0102c5f>] xen_idle+0x22/0x2e
Feb  5 00:04:22 corona kernel:  [<c0102d7e>] cpu_idle+0x91/0xab
Feb  5 00:04:22 corona kernel:  [<c03256fc>] start_kernel+0x378/0x37f
Feb  5 00:04:22 corona kernel: Mem-info:
Feb  5 00:04:22 corona kernel: DMA per-cpu:
Feb  5 00:04:22 corona kernel: cpu 0 hot: high 186, batch 31 used:30
Feb  5 00:04:22 corona kernel: cpu 0 cold: high 62, batch 15 used:51
Feb  5 00:04:22 corona kernel: DMA32 per-cpu: empty
Feb  5 00:04:22 corona kernel: Normal per-cpu: empty
Feb  5 00:04:22 corona kernel: HighMem per-cpu:
Feb  5 00:04:22 corona kernel: cpu 0 hot: high 90, batch 15 used:77
Feb  5 00:04:22 corona kernel: cpu 0 cold: high 30, batch 7 used:0
Feb  5 00:04:22 corona kernel: Free pages:       45644kB (44448kB HighMem)
Feb  5 00:04:22 corona kernel: Active:147427 inactive:28380 dirty:31
writeback:0 unstable:0 free:11411 slab:27096 mapped:3000 pagetables:241
Feb  5 00:04:22 corona kernel: DMA free:1196kB min:3452kB low:4312kB
high:5176kB active:474076kB inactive:72956kB present:745464kB
pages_scanned:84 all_unreclaimable? no
Feb  5 00:04:22 corona kernel: lowmem_reserve[]: 0 0 0 204
Feb  5 00:04:22 corona kernel: DMA32 free:0kB min:0kB low:0kB high:0kB
active:0kB inactive:0kB present:0kB pages_scanned:0
all_unreclaimable? no
Feb  5 00:04:22 corona kernel: lowmem_reserve[]: 0 0 0 204
Feb  5 00:04:22 corona kernel: Normal free:0kB min:0kB low:0kB high:0kB
active:0kB inactive:0kB present:0kB pages_scanned:0
all_unreclaimable? no
Feb  5 00:04:22 corona kernel: lowmem_reserve[]: 0 0 0 1632
Feb  5 00:04:22 corona kernel: HighMem free:44448kB min:204kB low:444kB
high:684kB active:115632kB inactive:40564kB present:208904kB
pages_scanned:0 all_unreclaimable? no
Feb  5 00:04:22 corona kernel: lowmem_reserve[]: 0 0 0 0
Feb  5 00:04:22 corona kernel: DMA: 1*4kB 1*8kB 0*16kB 1*32kB 0*64kB 1*128kB
0*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 1196kB
Feb  5 00:04:22 corona kernel: DMA32: empty
Feb  5 00:04:22 corona kernel: Normal: empty
Feb  5 00:04:22 corona kernel: HighMem: 1230*4kB 1919*8kB 249*16kB 91*32kB
168*64kB 19*128kB 16*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB =
44448kB
Feb  5 00:04:22 corona kernel: Swap cache: add 29, delete 29, find 0/0, race
0+0
Feb  5 00:04:22 corona kernel: Free swap  = 1975556kB
Feb  5 00:04:22 corona kernel: Total swap = 1975672kB
Feb  5 00:04:22 corona kernel: Free swap:       1975556kB
Feb  5 00:04:22 corona kernel: 238592 pages of RAM
Feb  5 00:04:22 corona kernel: 52226 pages of HIGHMEM
Feb  5 00:04:22 corona kernel: 19814 reserved pages
Feb  5 00:04:22 corona kernel: 159360 pages shared
Feb  5 00:04:22 corona kernel: 0 pages swap cached
Feb  5 00:04:22 corona kernel: 31 pages dirty
Feb  5 00:04:22 corona kernel: 0 pages writeback
Feb  5 00:04:22 corona kernel: 3000 pages mapped
Feb  5 00:04:22 corona kernel: 27096 pages slab
Feb  5 00:04:22 corona kernel: 241 pages pagetables

It stalls the networking for a minute or so while it is happening but then
everything seems to recover.  This may happen 6 times a day, or once or twice
in 6 months.

Cheers,
Andy


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