[Bug 197875] New: Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

[Bug 197875] New: Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=197875

            Bug ID: 197875
           Summary: Processes hang on attempted access of WDC WD30-EZRX
                    3TB HDD on HP Z420 Workstation
           Product: IO/Storage
           Version: 2.5
    Kernel Version: 4.13.x
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: SCSI
          Assignee: linux-scsi@vger.kernel.org
          Reporter: chuck.burt+kernel.org@gmail.com
        Regression: No

When booted under kernel 4.13.x, processes (such as parted, boot-info, gparted,
etc) always hang when attempting to run due to a Western Digital Green
WD30-EZRX 3TB HDD. Drive works as expected under kernel 4.10.x (even when all
other things are the same about the system but only booted kernel is
different).

Full specs of the machine if useful:
https://www.support.hp.com/id-en/document/c03277050

More details on Ubuntu's LaunchPad (where they asked me to come here to file an
upstream bug): https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1730746

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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https://bugzilla.kernel.org/show_bug.cgi?id=197875

Chuck Burt (chuck.burt+kernel.org@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|4.13.x                      |4.13+

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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https://bugzilla.kernel.org/show_bug.cgi?id=197875

Bart Van Assche (bvanassche@acm.org) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bvanassche@acm.org

--- Comment #1 from Bart Van Assche (bvanassche@acm.org) ---
Please provide the output of the following command after having reproduced the
hang:

    dmesg -c >/dev/null; echo w > /proc/sysrq-trigger; dmesg

Additionally, if you know how to build the kernel yourself, it would be helpful
if you could bisect this issue. Documentation is available e.g. at
https://git-scm.com/docs/git-bisect.

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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https://bugzilla.kernel.org/show_bug.cgi?id=197875

--- Comment #2 from Chuck Burt (chuck.burt+kernel.org@gmail.com) ---
Created attachment 260925
  --> https://bugzilla.kernel.org/attachment.cgi?id=260925&action=edit
Output of requested command

I reproduced the hang and ran the command as requested.  See attached file
output-20171129.txt

Building the kernel is something I could attempt tackling, but as a newbie I'm
highly likely to mess something up.  Either way, it will be a few weeks before
I can get to it (best case).  So I _really_ hope this provides the clue needed!

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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--- Comment #3 from Chuck Burt (chuck.burt+kernel.org@gmail.com) ---
Created attachment 260927
  --> https://bugzilla.kernel.org/attachment.cgi?id=260927&action=edit
Output of requested command as su

After reading the first few lines of the last attachment, it occurred to me
that running this command as su might be useful.  See attached.

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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https://bugzilla.kernel.org/show_bug.cgi?id=197875

Chuck Burt (chuck.burt+kernel.org@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #260927|0                           |1
        is obsolete|                            |

--- Comment #4 from Chuck Burt (chuck.burt+kernel.org@gmail.com) ---
Created attachment 260929
  --> https://bugzilla.kernel.org/attachment.cgi?id=260929&action=edit
Output of requested command as su

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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--- Comment #5 from Bart Van Assche (bvanassche@acm.org) ---
So command processing got stuck. Since there are two code paths in recent
kernels we need to know whether or not scsi-mq was used. Hence please provide
the output of the following command:

for d in /sys/block/*; do sfx=""; [ -e "$d/mq" ] && sfx=" [mq]"; echo "$d$sfx";
done

If the above command reports that scsi-mq is being used for the WDC disk,
please check whether the following command resolves the lockup:

for d in /sys/kernel/debug/block/*/state; do echo kick >$d; done

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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--- Comment #6 from Chuck Burt (chuck.burt+kernel.org@gmail.com) ---
> # for d in /sys/block/*; do sfx=""; [ -e "$d/mq" ] && sfx=" [mq]"; echo
> "$d$sfx"; done
> /sys/block/loop0 [mq]
> /sys/block/loop1 [mq]
> /sys/block/loop2 [mq]
> /sys/block/loop3 [mq]
> /sys/block/loop4 [mq]
> /sys/block/loop5 [mq]
> /sys/block/loop6 [mq]
> /sys/block/loop7 [mq]
> /sys/block/sda
> /sys/block/sdb
> /sys/block/sdc
> /sys/block/sr0

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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https://bugzilla.kernel.org/show_bug.cgi?id=197875

--- Comment #7 from Bart Van Assche (bvanassche@acm.org) ---
That's weird, there are no known queue lockup bugs in the legacy block/SCSI
core layers. Is the WDC harddisk perhaps controlled by a HBA? Can you provide
the output of lspci (run as root)?

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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--- Comment #8 from Chuck Burt (chuck.burt+kernel.org@gmail.com) ---
Created attachment 260953
  --> https://bugzilla.kernel.org/attachment.cgi?id=260953&action=edit
Output of lspci on 4.10.x kernel

I won't be able to boot into the newer kernel for about a week, however since
`lspci` is hardware-oriented, sharing the output under the older kernel in case
it's helpful.  Please let me know if you want me to run it on the new one
instead and I'll get it when I can.

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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https://bugzilla.kernel.org/show_bug.cgi?id=197875

--- Comment #9 from Bart Van Assche (bvanassche@acm.org) ---
My hope was that the list of PCI devices would show a PCI HBA of which the
driver has been modified recently. Since that's not the case I'm out of ideas
about what could be the root cause of this bug. Unless someone else has an idea
about how to find the root cause of this issue I think your only option is to
perform a bisect of the Linux kernel.

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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=197875

Gabriel Carter (jigneshsharm601@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jigneshsharm601@gmail.com

--- Comment #23 from Gabriel Carter (jigneshsharm601@gmail.com) ---
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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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Jerry Smith (jerrysmith3592@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jerrysmith3592@gmail.com

--- Comment #24 from Jerry Smith (jerrysmith3592@gmail.com) ---
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[Bug 197875] Processes hang on attempted access of WDC WD30-EZRX 3TB HDD on HP Z420 Workstation

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Theodore Tso (tytso@mit.edu) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Comment #23 is|0                           |1
            private|                            |
     Comment #24 is|0                           |1
            private|                            |
                 CC|                            |tytso@mit.edu

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