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[Bug 1505178] [NEW] MFG: Habanero: hxestorage exerciser logs task blocked messages in dmesg when running disks under PMC Sierra

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From: Launchpad Bug Tracker <1505178@xxxxxxxxxxxxxxxxxx>
Date: Mon, 12 Oct 2015 16:51:51 -0000
Reply-to: Bug 1505178 <1505178@xxxxxxxxxxxxxxxxxx>
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== Comment: #0  ==

When running STX on Habanero systems with PMC Sierra, the following
linux error messages are found when running "dmesg -T
--level=alert,crit,err" after the run.

[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18049 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18177 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18181 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18185 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18189 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18194 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18200 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18205 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18213 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18221 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

We are running the following code levels.

       ver 1.5.4.3 - OS, HTX, Firmware and Machine details

                           OS: GNU/Linux
                   OS Version: Ubuntu 14.04.3 LTS \n \l
               Kernel Version: 3.19.0-25-generic
                  HTX Version: htxubuntu-357
                    Host Name: rcx2c357
            Machine Serial No: 1035C5A         
           Machine Type/Model: 8348-21C        


We have a very limited number of PMC Sierra configs.  I've seen this error on both EC3S and ECSY PMC adapter types.  We've only run systems with 6TB drives or a mix of 6TB and 8TB disk drives so far.


== Comment: #5  ==
Call Trace:

dmesg -T

---------------
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18049 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] hxestorage      D 00003fff78c69a20     0 18049    451 0x00040000
[Fri Oct  2 12:36:52 2015] Call Trace:
[Fri Oct  2 12:36:52 2015] [c00000791de17490] [c0000079111f8980] 0xc0000079111f8980 (unreliable)
[Fri Oct  2 12:36:52 2015] [c00000791de17660] [c000000000015934] __switch_to+0x204/0x350
[Fri Oct  2 12:36:52 2015] [c00000791de176c0] [c000000000a11948] __schedule+0x368/0x8d0
[Fri Oct  2 12:36:52 2015] [c00000791de178e0] [c000000000a124e0] schedule_preempt_disabled+0x20/0x30
[Fri Oct  2 12:36:52 2015] [c00000791de17900] [c000000000a1464c] __mutex_lock_slowpath+0xfc/0x1f0
[Fri Oct  2 12:36:52 2015] [c00000791de17980] [c000000000a147ac] mutex_lock+0x6c/0x70
[Fri Oct  2 12:36:52 2015] [c00000791de179b0] [c0000000003050a8] __blkdev_get+0xa8/0x4d0
[Fri Oct  2 12:36:52 2015] [c00000791de17a20] [c000000000305730] blkdev_get+0x260/0x4d0
[Fri Oct  2 12:36:52 2015] [c00000791de17ad0] [c0000000002b10c0] do_dentry_open+0x270/0x410
[Fri Oct  2 12:36:52 2015] [c00000791de17b30] [c0000000002c6368] do_last+0x1b8/0xf30
[Fri Oct  2 12:36:52 2015] [c00000791de17c00] [c0000000002c96fc] path_openat+0xdc/0x7c0
[Fri Oct  2 12:36:52 2015] [c00000791de17cd0] [c0000000002cb358] do_filp_open+0x58/0xd0
[Fri Oct  2 12:36:52 2015] [c00000791de17db0] [c0000000002b2e88] do_sys_open+0x1c8/0x390
[Fri Oct  2 12:36:52 2015] [c00000791de17e30] [c000000000009258] system_call+0x38/0xd0
[Fri Oct  2 12:36:52 2015] INFO: task hxestorage:18177 blocked for more than 120 seconds.
[Fri Oct  2 12:36:52 2015]       Tainted: G           OE  3.19.0-25-generic #26~14.04.1-Ubuntu
[Fri Oct  2 12:36:52 2015] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri Oct  2 12:36:52 2015] hxestorage      D 00003fff78c69a20     0 18177    451 0x00040000
[Fri Oct  2 12:36:52 2015] Call Trace:
[Fri Oct  2 12:36:52 2015] [c00000791beb7490] [00000000000025f7] 0x25f7 (unreliable)
[Fri Oct  2 12:36:52 2015] [c00000791beb7660] [c000000000015934] __switch_to+0x204/0x350
[Fri Oct  2 12:36:52 2015] [c00000791beb76c0] [c000000000a11948] __schedule+0x368/0x8d0
[Fri Oct  2 12:36:52 2015] [c00000791beb78e0] [c000000000a124e0] schedule_preempt_disabled+0x20/0x30
[Fri Oct  2 12:36:52 2015] [c00000791beb7900] [c000000000a1464c] __mutex_lock_slowpath+0xfc/0x1f0
[Fri Oct  2 12:36:52 2015] [c00000791beb7980] [c000000000a147ac] mutex_lock+0x6c/0x70
[Fri Oct  2 12:36:52 2015] [c00000791beb79b0] [c0000000003050a8] __blkdev_get+0xa8/0x4d0
[Fri Oct  2 12:36:52 2015] [c00000791beb7a20] [c000000000305730] blkdev_get+0x260/0x4d0
[Fri Oct  2 12:36:52 2015] [c00000791beb7ad0] [c0000000002b10c0] do_dentry_open+0x270/0x410
[Fri Oct  2 12:36:52 2015] [c00000791beb7b30] [c0000000002c6368] do_last+0x1b8/0xf30
[Fri Oct  2 12:36:52 2015] [c00000791beb7c00] [c0000000002c96fc] path_openat+0xdc/0x7c0
[Fri Oct  2 12:36:52 2015] [c00000791beb7cd0] [c0000000002cb358] do_filp_open+0x58/0xd0
[Fri Oct  2 12:36:52 2015] [c00000791beb7db0] [c0000000002b2e88] do_sys_open+0x1c8/0x390
[Fri Oct  2 12:36:52 2015] [c00000791beb7e30] [c000000000009258] system_call+0x38/0xd0

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Taco Screen team (taco-screen-team)
         Status: New


** Tags: architecture-ppc64 bot-comment bugnameltc-131395 severity-high targetmilestone-inin14043
-- 
MFG: Habanero: hxestorage exerciser logs task blocked messages in dmesg when running disks under PMC Sierra
https://bugs.launchpad.net/bugs/1505178
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