New: ATA controller losing interrupt, system stall
http://bugzilla.kernel.org/show_bug.cgi?id=14515
Summary: ATA controller losing interrupt, system stall
Product: IO/Storage
Version: 2.5
Kernel Version: 2.6.31
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: IDE
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: YesCreated an attachment (id=23602)
--> (http://bugzilla.kernel.org/attachment.cgi?id=23602)
Kernel Log
I've just encountered a problem when moving from Ubuntu 9.04 to 9.10. There are large stalls every now and again and looking at the kernel log, I'm getting lost interrupts on the ATA interface. This did not happen with the previous 2.6.28 kernel.
Here's a sample from the log.
[ 86.816503] ata1: lost interrupt (Status 0x58)
[ 86.820070] ata1: drained 32768 bytes to clear DRQ.
[ 86.928979] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 86.929068] ata1.01: cmd a0/00:00:00:00:00/00:00:00:00:00/b0 tag 0
[ 86.929070] cdb 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 86.929072] res 58/00:01:00:00:00/00:00:00:00:00/b0 Emask 0x2 (HSM
violation)
[ 86.929277] ata1.01: status: { DRDY DRQ }
[ 86.929353] ata1: soft resetting linkThis is on an Acer Aspire laptop with a PIIX chipset and an Intel Mobile 945 GMA
The hard disk is a PATA WD600UE.
See attached kernel log and pci dump.
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[Bug 14515] ATA controller losing interrupt, system stall
http://bugzilla.kernel.org/show_bug.cgi?id=14515
--- Comment #1 from Lloyd Weehuizen <[email protected]> 2009-10-31 01:20:11 --- Created an attachment (id=23603)
--> (http://bugzilla.kernel.org/attachment.cgi?id=23603)
PCI Devices
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[Bug 14515] ATA controller losing interrupt, system stall
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=14515
Barry Song <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]
--- Comment #2 from Barry Song <[email protected]> 2009-10-31 02:01:11 --- Yes. I've encountered the same problem "lost interrupt" with Lloyd Weehuizen after upgrading kernel to 2.6.31. What I am using is HP laptop. I think recent commits must have destroyed some ATA controllers.
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[Bug 14515] ATA controller losing interrupt, system stall
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=14515
--- Comment #3 from Lloyd Weehuizen <[email protected]> 2009-10-31 23:44:12 --- Rolling back to kernel 2.6.30 reduces the occurrence of this issue, but it still occurs.
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[Bug 14515] ATA controller losing interrupt, system stall
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=14515
Andrew Simpson <[email protected]> changed:
What |Removed |Added
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CC| |[email protected]
--- Comment #4 from Andrew Simpson <[email protected]> 2009-11-03 06:21:05 --- Ubuntu bug #445852
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/445852
Reporting as affecting Acer Aspire One, Asus EEE and Dell Mini 9 (All SSD models). More prevalent with SSD's that have been upgraded by the user to newer models, but also reported on the stock 8Gb SSD on the AA1.
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[Bug 14515] ATA controller losing interrupt, system stall
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=14515
Tejun Heo <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]
--- Comment #5 from Tejun Heo <[email protected]> 2009-11-09 14:47:12 --- This has nothing to do with the harddrive. It's the optical drive choking up on commands (TEST_UNIT_READY) used for polling for media presence events. As it's PATA and the hard drive shares bus with the optical drive, while the optical drive is choking, the hard drive can't access the bus so hard drive access also stalls.
Disabling media presence polling should work around the problem for now. Long term, I think we shouldn't use TUR for media presence polling. Windows doesn't use it and devices with crappy firmware which chokes on repeated TUR aren't too rare. That's in the pipeline but unfortunately I don't think it will be ready for this release cycle. It's gonna be a pretty pervasive change. :-(
So, for now, "hal-disable-polling /dev/sr0" seems like the only solution.
Thanks.
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[Bug 14515] ATA controller losing interrupt, system stall
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=14515
Robert Hancock <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]
--- Comment #6 from Robert Hancock <[email protected]> 2009-11-09 23:58:02 --- AFAIK the cdrom code normally uses GET EVENT STATUS NOTIFICATION for this rather than TEST UNIT READY. It would be interesting to know where exactly the TUR is coming from..
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[Bug 14515] ATA controller losing interrupt, system stall
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=14515
--- Comment #7 from Tejun Heo <[email protected]> 2009-11-10 00:41:38 --- TUR is coming from open and I have patches to implement in-kernel polling so that polling doesn't have to go through open but it depends on workqueue patches which are yet to be merged. I think I can pull it for 2.6.34 but I might be too optimistic. :-P
Thanks.
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[Bug 14515] ATA controller losing interrupt, system stall
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=14515
--- Comment #8 from Andrew Simpson <[email protected]> 2009-11-10 06:38:36 --- O.K., it would appear then that this is not related to Ubuntu bug #445852, since the machines in this bug report don't have cdrom drives.
Trying "hal-disable-polling --device /dev/sr0", just gives an error.
Should I open a different bug report?
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[Bug 14515] ATA controller losing interrupt, system stall
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=14515
--- Comment #9 from Tejun Heo <[email protected]> 2009-11-10 09:30:57 --- Andrew, yes and please attach kernel log with printk timestamp turned on which includes boot and the failures and the output of "lspci -nn".
Thanks.
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