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Subject2.6.32: <IRQ> __alloc_pages_nodemask+0x54b/0x595
Hi,
I am running a server with 16 GB RAM, which was running some long-time
CPU intensive job (a week). It has two SATA drives in RAID mirror mode.
Once a week I re-sync the array members (part of the output included below).
The hardware is MSI-P45Neo2 with intel quad cpu.

I just found the following in dmesg:

[cut]
ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata8: SATA link down (SStatus 0 SControl 300)
ata7: SATA link down (SStatus 0 SControl 300)
ata1.00: ATA-8: ST31000340NS, SN06, max UDMA/133
ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32)
ata1.00: configured for UDMA/133
scsi 0:0:0:0: Direct-Access ATA ST31000340NS SN06 PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1 sda2 sda3
sd 0:0:0:0: [sda] Attached SCSI disk
usb 3-2: new low speed USB device using uhci_hcd and address 2
usb 3-2: New USB device found, idVendor=051d, idProduct=0002
usb 3-2: New USB device strings: Mfr=3, Product=1, SerialNumber=2
usb 3-2: Product: Smart-UPS 1500 FW:653.18.I USB FW:7.4
usb 3-2: Manufacturer: American Power Conversion
usb 3-2: SerialNumber: AS0940321130
usb 3-2: configuration #1 chosen from 1 choice
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata2.00: ATAPI: PIONEER DVD-RW DVR-216D, 1.08, max UDMA/66
ata2.00: configured for UDMA/66
scsi 1:0:0:0: CD-ROM PIONEER DVD-RW DVR-216D 1.08 PQ: 0 ANSI: 5
sr0: scsi3-mmc drive: 12x/12x writer cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
sr 1:0:0:0: Attached scsi CD-ROM sr0
sr 1:0:0:0: Attached scsi generic sg1 type 5
ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata3.00: ATA-8: ST31000340NS, SN06, max UDMA/133
ata3.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32)
ata3.00: configured for UDMA/133
scsi 2:0:0:0: Direct-Access ATA ST31000340NS SN06 PQ: 0 ANSI: 5
sd 2:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
sd 2:0:0:0: Attached scsi generic sg2 type 0
sd 2:0:0:0: [sdb] Write Protect is off
sd 2:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 2:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdb: sdb1 sdb2 sdb3
sd 2:0:0:0: [sdb] Attached SCSI disk
ata4: SATA link down (SStatus 0 SControl 300)
generic-usb 0003:051D:0002.0001: hiddev96,hidraw0: USB HID v1.10 Device [American Power Conversion Smart-UPS 1500 FW:653.18.I USB FW:7.4] on usb-0000:00:1a.0-2/input0
ata5: SATA link down (SStatus 0 SControl 300)
usb 6-2: new low speed USB device using uhci_hcd and address 2
usb 6-2: New USB device found, idVendor=046d, idProduct=c018
usb 6-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 6-2: Product: USB Optical Mouse
usb 6-2: Manufacturer: Logitech
usb 6-2: configuration #1 chosen from 1 choice
input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/input/input2
generic-usb 0003:046D:C018.0002: input,hidraw1: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:1d.0-2/input0
ata6: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata6.00: ATA-7: ST3500630AS, 3.AAK, max UDMA/133
ata6.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 31/32)
ata6.00: configured for UDMA/133
scsi 5:0:0:0: Direct-Access ATA ST3500630AS 3.AA PQ: 0 ANSI: 5
sd 5:0:0:0: [sdc] 976773168 512-byte logical blocks: (500 GB/465 GiB)
sd 5:0:0:0: Attached scsi generic sg3 type 0
sd 5:0:0:0: [sdc] Write Protect is off
sd 5:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdc: sdc1
sd 5:0:0:0: [sdc] Attached SCSI disk
md: Waiting for all devices to be available before autodetect
md: If you don't use raid, use raid=noautodetect
md: Autodetecting RAID arrays.
md: Scanned 4 and added 4 devices.
md: autorun ...
md: considering sdb3 ...
md: adding sdb3 ...
md: sdb1 has different UUID to sdb3
md: adding sda3 ...
md: sda1 has different UUID to sdb3
md: created md1
md: bind<sda3>
md: bind<sdb3>
md: running: <sdb3><sda3>
raid1: raid set md1 active with 2 out of 2 mirrors
md1: detected capacity change from 0 to 992034488320
md: considering sdb1 ...
md: adding sdb1 ...
md: adding sda1 ...
md: created md0
md: bind<sda1>
md: bind<sdb1>
md: running: <sdb1><sda1>
raid1: raid set md0 active with 2 out of 2 mirrors
md0: detected capacity change from 0 to 156172288
md: ... autorun DONE.
md1: unknown partition table
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with writeback data mode.
VFS: Mounted root (ext3 filesystem) readonly on device 9:1.
[cut]


md: data-check of RAID array md0
md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check.
md: using 128k window, over a total of 152512 blocks.
md: delaying data-check of md1 until md0 has finished (they share one or more physical units)
md: md0: data-check done.
md: data-check of RAID array md1
md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check.
md: using 128k window, over a total of 968783680 blocks.
md: md1: data-check done.
swapper: page allocation failure. order:0, mode:0x20
Pid: 0, comm: swapper Not tainted 2.6.32-default #6
Call Trace:
<IRQ> [<ffffffff8106c711>] __alloc_pages_nodemask+0x54b/0x595
[<ffffffff81409b82>] ? tcp_current_mss+0x43/0x62
[<ffffffff8108bad4>] cache_alloc_refill+0x24f/0x485
[<ffffffff8108bd90>] __kmalloc+0x86/0xb8
[<ffffffff813d9186>] __alloc_skb+0x67/0x154
[<ffffffff813d9d8f>] __netdev_alloc_skb+0x1d/0x3a
[<ffffffff81316586>] rtl8169_rx_fill+0xa3/0x14f
[<ffffffff8131698a>] rtl8169_rx_interrupt+0x358/0x3c2
[<ffffffff813190bc>] rtl8169_poll+0x37/0x19a
[<ffffffff813df943>] net_rx_action+0x6d/0x139
[<ffffffff8103ecab>] __do_softirq+0x91/0x11a
[<ffffffff8100c9bc>] call_softirq+0x1c/0x28
[<ffffffff8100e447>] do_softirq+0x33/0x6b
[<ffffffff8103e80a>] irq_exit+0x36/0x38
[<ffffffff8100db97>] do_IRQ+0xa0/0xb7
[<ffffffff8100c253>] ret_from_intr+0x0/0xa
<EOI> [<ffffffff81012286>] ? mwait_idle+0x66/0x6b
[<ffffffff8100ad44>] ? enter_idle+0x20/0x22
[<ffffffff8100ad8e>] ? cpu_idle+0x48/0x7e
[<ffffffff817fd147>] ? start_secondary+0x17a/0x17e
Mem-Info:
DMA per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
CPU 1: hi: 0, btch: 1 usd: 0
CPU 2: hi: 0, btch: 1 usd: 0
CPU 3: hi: 0, btch: 1 usd: 0
DMA32 per-cpu:
CPU 0: hi: 186, btch: 31 usd: 177
CPU 1: hi: 186, btch: 31 usd: 148
CPU 2: hi: 186, btch: 31 usd: 43
CPU 3: hi: 186, btch: 31 usd: 166
Normal per-cpu:
CPU 0: hi: 186, btch: 31 usd: 193
CPU 1: hi: 186, btch: 31 usd: 208
CPU 2: hi: 186, btch: 31 usd: 37
CPU 3: hi: 186, btch: 31 usd: 186
active_anon:1343533 inactive_anon:140362 isolated_anon:64
active_file:714465 inactive_file:1753044 isolated_file:0
unevictable:0 dirty:11429 writeback:64667 unstable:0
free:18535 slab_reclaimable:106621 slab_unreclaimable:18444
mapped:11762 shmem:546 pagetables:6610 bounce:0
DMA free:15864kB min:12kB low:12kB high:16kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15240kB 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 writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
lowmem_reserve[]: 0 2999 16129 16129
DMA32 free:53556kB min:3020kB low:3772kB high:4528kB active_anon:152716kB inactive_anon:39140kB active_file:544600kB inactive_file:1878536kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3071776kB mlocked:0kB dirty:11680kB writeback:70620kB mapped:160kB shmem:4kB slab_reclaimable:115388kB slab_unreclaimable:12992kB kernel_stack:24kB pagetables:484kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 13130 13130
Normal free:4720kB min:13220kB low:16524kB high:19828kB active_anon:5221416kB inactive_anon:522308kB active_file:2313260kB inactive_file:5133640kB unevictable:0kB isolated(anon):256kB isolated(file):0kB present:13445120kB mlocked:0kB dirty:34036kB writeback:188048kB mapped:46888kB shmem:2180kB slab_reclaimable:311096kB slab_unreclaimable:60784kB kernel_stack:2744kB pagetables:25956kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:32 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA: 0*4kB 1*8kB 1*16kB 1*32kB 1*64kB 1*128kB 1*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15864kB
DMA32: 1628*4kB 1662*8kB 1702*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB 1*4096kB = 53184kB
Normal: 94*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 4472kB
2469490 total pagecache pages
1566 pages in swap cache
Swap cache stats: add 130904, delete 129338, find 316914/317763
Free swap = 15167368kB
Total swap = 15647288kB
4194288 pages RAM
82473 pages reserved
2444838 pages shared
1693229 pages non-shared
------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:261 dev_watchdog+0xdf/0x13c()
Hardware name: MS-7558
NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out
Modules linked in: f71882fg coretemp i2c_i801 firewire_ohci firewire_core
Pid: 0, comm: swapper Not tainted 2.6.32-default #6
Call Trace:
<IRQ> [<ffffffff8103a51e>] warn_slowpath_common+0x77/0x8f
[<ffffffff8103a583>] warn_slowpath_fmt+0x3c/0x3e
[<ffffffff813ed984>] ? netif_tx_lock+0x3f/0x67
[<ffffffff813edad3>] dev_watchdog+0xdf/0x13c
[<ffffffff8104899e>] ? __queue_work+0x35/0x3e
[<ffffffff81042805>] run_timer_softirq+0x15a/0x1c4
[<ffffffff813ed9f4>] ? dev_watchdog+0x0/0x13c
[<ffffffff8101cce3>] ? lapic_next_event+0x10/0x14
[<ffffffff8103ecab>] __do_softirq+0x91/0x11a
[<ffffffff8105553d>] ? tick_program_event+0x25/0x27
[<ffffffff8100c9bc>] call_softirq+0x1c/0x28
[<ffffffff8100e447>] do_softirq+0x33/0x6b
[<ffffffff8103e80a>] irq_exit+0x36/0x38
[<ffffffff8101d39d>] smp_apic_timer_interrupt+0x81/0x8f
[<ffffffff8100c3b3>] apic_timer_interrupt+0x13/0x20
<EOI> [<ffffffff81012286>] ? mwait_idle+0x66/0x6b
[<ffffffff8100ad44>] ? enter_idle+0x20/0x22
[<ffffffff8100ad8e>] ? cpu_idle+0x48/0x7e
[<ffffffff817fd147>] ? start_secondary+0x17a/0x17e
---[ end trace 277e396d24aaa901 ]---
r8169: eth0: link up
md: data-check of RAID array md0
md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check.
md: using 128k window, over a total of 152512 blocks.
md: delaying data-check of md1 until md0 has finished (they share one or more physical units)
md: md0: data-check done.


# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 6622 6607 6535 6668 IO-APIC-edge timer
1: 25945 26055 25838 26187 IO-APIC-edge i8042
2: 0 0 0 0 XT-PIC-XT cascade
4: 0 1 0 0 IO-APIC-edge
8: 14 14 14 13 IO-APIC-edge rtc0
12: 0 0 2 2 IO-APIC-edge i8042
16: 10009479 9993440 9960761 10005048 IO-APIC-fasteoi ahci, uhci_hcd:usb3
17: 31235 30566 30239 31562 IO-APIC-fasteoi pata_jmicron, HDA Intel, firewire_ohci
18: 2 1 1 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb8
19: 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb5, uhci_hcd:usb7
21: 38 38 34 44 IO-APIC-fasteoi uhci_hcd:usb4
22: 50 51 51 51 IO-APIC-fasteoi HDA Intel
23: 172113 171807 171735 171915 IO-APIC-fasteoi ehci_hcd:usb2, uhci_hcd:usb6
29: 94874235 95288996 95218820 94798524 PCI-MSI-edge ahci
30: 54750278 54778157 54873715 54762432 PCI-MSI-edge eth0
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 3920740067 3913124351 2131868122 2120456788 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 Performance monitoring interrupts
PND: 0 0 0 0 Performance pending work
RES: 7266829 7671287 7183417 8073089 Rescheduling interrupts
CAL: 76080694 505 78997635 84 Function call interrupts
TLB: 34542216 30185814 35666755 33126463 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 26365 26365 26365 26365 Machine check polls
ERR: 0
MIS: 0


Any clues?
Thanks,
Martin



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