According to the vmcore[1], the crash seems to occur while performing
the "udevadm"[2] command which is part of the sosreport under the block
plugin.
[1] - vmcore
KERNEL: /usr/lib/debug/boot/vmlinux-4.2.0-30-generic
DUMPFILE: dump.201605101421 [PARTIAL DUMP]
CPUS: 40
DATE: Wed Dec 31 19:00:00 1969
UPTIME: 12:56:48
LOAD AVERAGE: 4.66, 5.51, 4.64
TASKS: 37318
NODENAME: XXXXXXXXXXXXXX
RELEASE: 4.2.0-30-generic
VERSION: #36~14.04.1-Ubuntu SMP Fri Feb 26 18:49:23 UTC 2016
MACHINE: x86_64 (2992 Mhz)
MEMORY: 256 GB
PANIC: ""
PID: 53367
COMMAND: "udevadm"
TASK: ffff880386240000 [THREAD_INFO: ffff880130fac000]
CPU: 24
STATE: TASK_RUNNING (PANIC)
----
[2] - sosreport - block plugin
sosreport-3.1/sos/plugins/block.py: self.add_cmd_output("udevadm info
-ap /sys/block/%s" % (disk))
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https://bugs.launchpad.net/bugs/1581169
Title:
kernel panic (General protection fault) on module hpsa
(lockup_detected)
Status in linux package in Ubuntu:
Incomplete
Bug description:
it has been brought to my attention the following:
Kernel version: 4.2.0-30-generic #36~14.04.1-Ubuntu
When running an sosreport on HP DL380 gen8 machines running this
kernel (Ubuntu 14.04.4 using linux-generic-lts-wily), which includes
hpsa 3.4.10-0, hspa causes a kernel panic when sosreport is scanning
block devices. These are machines with an onboard p420i and
daughtercard p420 RAID controller, with each drive in a single raid0
configuration. (unideal, but the machines do not boot when the card is
in HBA mode).
This panic does not happen on kernel 3.13 with hpsa 3.4.1-0 when using
sosreport.
The funny thing is kernel 4.2 / 3.4.10-0 still is a more stable
solution - I have yet to see a prior issue in which the p420 would
lock up on this version. One issue wit h this is HP 99% of the time
will require an sosreport when we raise any hardware issues. I can no
longer produce that on kernel 4.2 machines because they kernel panic.
I can reproduce this consistently with several other machines in our
environment. - please let me know if you would like more info.
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