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))
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))