Lars, this bug was reported a while ago and there hasn't been any activity in
it recently. We were wondering if this is still an issue? If so, could you
please test the latest upstream kernel available following
https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional
upstream developers to examine the issue. Please do not test the daily folder,
but the one all the way at the bottom. Once you've tested the upstream kernel,
please comment on which kernel version specifically you tested. If this bug is
fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER
where VERSION-NUMBER is the version number of the kernel you tested. For
example:
kernel-fixed-upstream-v3.11-rc5
This can be done by clicking on the yellow circle with a black pencil icon next
to the word Tags located at the bottom of the bug description. As well, please
remove the tag:
needs-upstream-testing
If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER
As well, please remove the tag:
needs-upstream-testing
If you are unable to test the mainline kernel, please comment as to why
specifically you were unable to test it and add the following tags:
kernel-unable-to-test-upstream
kernel-unable-to-test-upstream-VERSION-NUMBER
Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.
** Tags added: latest-bios-1.0b regression-potential
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/652812
Title:
task blocked for more than 120 seconds on server kernel
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
Hi,
this is about a ubuntu server version.
The server consists mainly of fast HDDs and 2 external attached LTO-3 tape
drives in a changer.
It's purpose is to sync with other servers and then write ewverything onto
both tape drives in parallel overnight.
The following is our main problem:
[ 1081.590063] INFO: task mbuffer1:2589 blocked for more than 120 seconds.
[ 1081.590577] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 1081.591151] mbuffer1 D 0000000000000000 0 2589 2560 0x00000000
[ 1081.591162] ffff88080cee9c18 0000000000000082 0000000000015bc0
0000000000015bc0
[ 1081.591173] ffff8803f87ac890 ffff88080cee9fd8 0000000000015bc0
ffff8803f87ac4d0
[ 1081.591181] 0000000000015bc0 ffff88080cee9fd8 0000000000015bc0
ffff8803f87ac890
[ 1081.591189] Call Trace:
[ 1081.591208] [<ffffffff815583ad>] schedule_timeout+0x22d/0x300
[ 1081.591220] [<ffffffff812b4567>] ? kobject_put+0x27/0x60
[ 1081.591228] [<ffffffff81559f45>] ? _spin_lock_irq+0x15/0x20
[ 1081.591238] [<ffffffff8138a90a>] ? scsi_request_fn+0xda/0x5e0
[ 1081.591246] [<ffffffff81557656>] wait_for_common+0xd6/0x180
[ 1081.591256] [<ffffffff8129de33>] ? __generic_unplug_device+0x33/0x40
[ 1081.591266] [<ffffffff8105a350>] ? default_wake_function+0x0/0x20
[ 1081.591286] [<ffffffffa015c4d8>] ? T.945+0x158/0x170 [st]
[ 1081.591294] [<ffffffff815577bd>] wait_for_completion+0x1d/0x20
[ 1081.591305] [<ffffffffa015c637>] T.944+0x127/0x270 [st]
[ 1081.591315] [<ffffffffa0162092>] st_write+0x5a2/0xc70 [st]
[ 1081.591324] [<ffffffff8105a380>] ? wake_up_state+0x10/0x20
[ 1081.591334] [<ffffffff81143aa8>] vfs_write+0xb8/0x1a0
[ 1081.591342] [<ffffffff81144311>] sys_write+0x51/0x80
[ 1081.591351] [<ffffffff810121b2>] system_call_fastpath+0x16/0x1b
[ 1081.591358] INFO: task mbuffer2:2608 blocked for more than 120 seconds.
[ 1081.591800] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 1081.592374] mbuffer2 D 0000000000000000 0 2608 2591 0x00000000
[ 1081.592383] ffff8800df895c18 0000000000000082 0000000000015bc0
0000000000015bc0
[ 1081.592392] ffff8803f87a9ab0 ffff8800df895fd8 0000000000015bc0
ffff8803f87a96f0
[ 1081.592400] 0000000000015bc0 ffff8800df895fd8 0000000000015bc0
ffff8803f87a9ab0
[ 1081.592408] Call Trace:
[ 1081.592417] [<ffffffff815583ad>] schedule_timeout+0x22d/0x300
[ 1081.592425] [<ffffffff812b4567>] ? kobject_put+0x27/0x60
[ 1081.592432] [<ffffffff81559f45>] ? _spin_lock_irq+0x15/0x20
[ 1081.592439] [<ffffffff8138a90a>] ? scsi_request_fn+0xda/0x5e0
[ 1081.592448] [<ffffffff81557656>] wait_for_common+0xd6/0x180
[ 1081.592456] [<ffffffff8129de33>] ? __generic_unplug_device+0x33/0x40
[ 1081.592464] [<ffffffff8105a350>] ? default_wake_function+0x0/0x20
[ 1081.592474] [<ffffffffa015c4d8>] ? T.945+0x158/0x170 [st]
[ 1081.592482] [<ffffffff815577bd>] wait_for_completion+0x1d/0x20
[ 1081.592492] [<ffffffffa015c637>] T.944+0x127/0x270 [st]
[ 1081.592502] [<ffffffffa0162092>] st_write+0x5a2/0xc70 [st]
[ 1081.592510] [<ffffffff8105a380>] ? wake_up_state+0x10/0x20
[ 1081.592518] [<ffffffff81143aa8>] vfs_write+0xb8/0x1a0
[ 1081.592525] [<ffffffff81144311>] sys_write+0x51/0x80
[ 1081.592533] [<ffffffff810121b2>] system_call_fastpath+0x16/0x1b
After the 5th 120s delay the following aborts the backup:
[ 1818.980059] mptscsih: ioc1: attempting task abort! (sc=ffff880057bb7000)
[ 1818.980067] st 6:0:4:0: CDB: Write(6): 0a 00 04 00 00 00
[ 1829.300042] mptscsih: ioc1: WARNING - Issuing Reset from
mptscsih_IssueTaskMgmt!!
[ 1831.280030] mptscsih: ioc1: task abort: SUCCESS (sc=ffff880057bb7000)
[ 1831.282296] mptscsih: ioc1: attempting task abort! (sc=ffff880057bb6a00)
[ 1831.282302] st 6:0:5:0: CDB: Write(6): 0a 00 04 00 00 00
[ 1831.282321] mptscsih: ioc1: task abort: SUCCESS (sc=ffff880057bb6a00)
[ 1831.284945] st0: Error 80000 (driver bt 0x0, host bt 0x8).
[ 1831.285106] st1: Error 80000 (driver bt 0x0, host bt 0x8).
[ 1831.490044] scsi target6:0:4: Beginning Domain Validation
[ 1831.637097] scsi target6:0:4: Ending Domain Validation
[ 1831.637208] scsi target6:0:4: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns,
offset 64)
[ 1834.150032] scsi target6:0:5: Beginning Domain Validation
[ 1834.297533] scsi target6:0:5: Ending Domain Validation
[ 1834.297649] scsi target6:0:5: FAST-160 WIDE SCSI 320.0 MB/s DT IU RTI
PCOMP (6.25 ns, offset 64)
[ 1910.340056] scsi target6:0:5: Beginning Domain Validation
[ 1910.729074] scsi target6:0:5: Ending Domain Validation
[ 1910.729194] scsi target6:0:5: FAST-160 WIDE SCSI 320.0 MB/s DT IU RTI
PCOMP (6.25 ns, offset 64)
This is with the SAS-LSI driver manually updated to version:
# cat /sys/module/mptbase/version
4.24.00.00
because I get lost connections to SATA drives with the driver supplied
with the kernel (was with 2.6.32-23).
This is a really serious bug for this server! It prevents it from doing
backups.
Please also read Bug 494476
regards
Lars
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-25-server 2.6.32-25.44 [modified:
lib/modules/2.6.32-25-server/kernel/drivers/message/fusion/mptbase.ko
lib/modules/2.6.32-25-server/kernel/drivers/message/fusion/mptctl.ko
lib/modules/2.6.32-25-server/kernel/drivers/message/fusion/mptfc.ko
lib/modules/2.6.32-25-server/kernel/drivers/message/fusion/mptlan.ko
lib/modules/2.6.32-25-server/kernel/drivers/message/fusion/mptsas.ko
lib/modules/2.6.32-25-server/kernel/drivers/message/fusion/mptscsih.ko
lib/modules/2.6.32-25-server/kernel/drivers/message/fusion/mptspi.ko]
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-25.44-server 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-server x86_64
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code
2: ls: cannot access /dev/snd/: No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
CurrentDmesg:
Date: Fri Oct 1 10:20:57 2010
MachineType: Supermicro H8DI3+
PciMultimedia:
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-25-server root=LABEL=WURZEL ro
elevator=noop quiet splash
ProcEnviron:
LANG=de_DE.UTF-8
SHELL=/bin/bash
SourcePackage: linux
dmi.bios.date: 12/07/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.0b
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: H8DI3+
dmi.board.vendor: Supermicro
dmi.board.version: 1234567890
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 1234567890
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1.0b:bd12/07/2009:svnSupermicro:pnH8DI3+:pvr1234567890:rvnSupermicro:rnH8DI3+:rvr1234567890:cvnSupermicro:ct3:cvr1234567890:
dmi.product.name: H8DI3+
dmi.product.version: 1234567890
dmi.sys.vendor: Supermicro
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