[Bug 77631] task scsi_eh_6:537 blocked for more than 120 seconds.

2014-06-10 Thread bugzilla-daemon 
https://bugzilla.kernel.org/show_bug.cgi?id=77631

--- Comment #4 from Mikhail  ---
Created attachment 138991
  --> https://bugzilla.kernel.org/attachment.cgi?id=138991&action=edit
kernel log (second reboot) and plug/unplug USB3.0 hub

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[Bug 77631] task scsi_eh_6:537 blocked for more than 120 seconds.

2014-06-10 Thread bugzilla-daemon 
https://bugzilla.kernel.org/show_bug.cgi?id=77631

--- Comment #3 from Mikhail  ---
When I reconnect my USB3.0 10 port hub only occurs this:

[  835.657491] usb 4-3: USB disconnect, device number 3
[  835.657506] usb 4-3.4: USB disconnect, device number 11
[  835.658118] usb 4-3.4: Failed to set U1 timeout to 0x0,error code -19
[  835.658134] usb 4-3.4: Failed to set U1 timeout to 0x43,error code -19
[  835.658146] usb 4-3.4: Failed to set U2 timeout to 0x28,error code -19
[  835.694393] usb 4-3.4: Failed to set U1 timeout to 0x0,error code -19
[  835.694434] usb 4-3.4: Failed to set U1 timeout to 0x29,error code -19
[  835.694440] usb 4-3.4: Failed to set U2 timeout to 0x28,error code -19
[  835.802188] usb 3-3: USB disconnect, device number 11
[  835.802191] usb 3-3.1: USB disconnect, device number 12
[  835.802193] usb 3-3.1.3: USB disconnect, device number 14
[  835.868161] usb 3-3.1.4: USB disconnect, device number 15
[  835.875955] usb 3-3.1.6: USB disconnect, device number 16
[  835.914734] usb 3-3.3: USB disconnect, device number 13
[  841.411016] usb 3-7: USB disconnect, device number 3
[  859.635511] usb 3-7: new high-speed USB device number 20 using xhci_hcd
[  859.800823] usb 3-7: New USB device found, idVendor=2109, idProduct=2812
[  859.800833] usb 3-7: New USB device strings: Mfr=0, Product=1,
SerialNumber=0
[  859.800838] usb 3-7: Product: USB 2.0 HUB

[  859.803390] hub 3-7:1.0: USB hub found
[  859.803648] hub 3-7:1.0: 4 ports detected
[  860.088189] usb 3-7.1: new high-speed USB device number 21 using xhci_hcd
[  860.174264] usb 3-7.1: New USB device found, idVendor=1a40, idProduct=0201
[  860.174266] usb 3-7.1: New USB device strings: Mfr=0, Product=1,
SerialNumber=0
[  860.174268] usb 3-7.1: Product: USB 2.0 Hub [MTT]
[  860.174915] hub 3-7.1:1.0: USB hub found
[  860.174941] hub 3-7.1:1.0: 7 ports detected
[  860.251194] usb 3-7.3: new high-speed USB device number 22 using xhci_hcd
[  860.338906] usb 3-7.3: New USB device found, idVendor=18d1, idProduct=4ee1
[  860.338908] usb 3-7.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[  860.338909] usb 3-7.3: Product: Nexus 5
[  860.338910] usb 3-7.3: Manufacturer: LGE
[  860.338911] usb 3-7.3: SerialNumber: 07606f5400e1b31a
[  860.375934] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.375967] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.376052] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.376646] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.376686] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.376723] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.376763] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.376803] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.376906] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.376942] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377140] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377215] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377254] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377369] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377451] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377494] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377534] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377570] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377651] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377693] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377745] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.377828] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378002] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378120] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378160] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378198] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378240] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378279] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378320] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378363] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378414] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378455] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378501] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378665] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378704] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378747] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378787] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378828] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378881] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378920] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.378970] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.379011] hub 3-7.1:1.0: hub_port_status failed (err = -71)
[  860.379049] hub 3-7.1:1.

[Bug 77631] task scsi_eh_6:537 blocked for more than 120 seconds.

2014-06-10 Thread bugzilla-daemon 
https://bugzilla.kernel.org/show_bug.cgi?id=77631

--- Comment #2 from Mikhail  ---
This occurred when I did first reboot after kernel update from 3.14.5 to
3.14.6.
After second reboot I have not seen this issue.
And I did not plug/unplug any USB devices when it occurred.

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[Bug 77631] task scsi_eh_6:537 blocked for more than 120 seconds.

2014-06-10 Thread bugzilla-daemon 
https://bugzilla.kernel.org/show_bug.cgi?id=77631

--- Comment #1 from Alan Stern  ---
On Tue, 10 Jun 2014, James Bottomley wrote:

> From the trace below, this looks to be a USB issue (USB added to cc):
> the scsi error handler thread is waiting for usb storage to complete the
> reset.  It's a 3.14.5 kernel, so the previous reset hang because of
> spurious sense requests should be fixed.
> 
> James
> 
> 
> On Tue, 2014-06-10 at 16:50 +, bugzilla-dae...@bugzilla.kernel.org
> wrote:
> > https://bugzilla.kernel.org/show_bug.cgi?id=77631
> > 
> > Bug ID: 77631
> >Summary: task scsi_eh_6:537 blocked for more than 120 seconds.
> >Product: IO/Storage
> >Version: 2.5
> > Kernel Version: 3.14.6
> >   Hardware: All
> > OS: Linux
> >   Tree: Mainline
> > Status: NEW
> >   Severity: normal
> >   Priority: P1
> >  Component: SCSI
> >   Assignee: linux-scsi@vger.kernel.org
> >   Reporter: mikhail.v.gavri...@gmail.com
> > Regression: No
> > 
> > Created attachment 138941
> >   --> https://bugzilla.kernel.org/attachment.cgi?id=138941&action=edit
> > kernel log
> > 
> > task scsi_eh_6:537 blocked for more than 120 seconds.

This line from earlier in the kernel log is highly suspicious:

> [   46.330470] usb-storage: Error in queuecommand_lck: us->srb = 
> 88080c532600

This means that the SCSI midlayer called the queuecommand routine twice 
with no intervening completion, even though the maximum queue depth is 
only 1.

Mikhail, is this bug reproducible?  If it is, can you post a usbmon 
trace showing the events leading up to the bug?

Does the bug occur if the device is plugged into a USB-2 bus rather 
than a USB-3 bus?

Alan Stern

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