Ubuntu
s390-tools package

  1. Bug #1799208
  2. Comment #0

Comment 0 for bug 1799208

Revision history for this message
Frank Heimes (fheimes) wrote :

dbginfo.sh does not complete on Ubuntu 16.04(.5) using s390-tools version 1.34.0-0ubuntu8.7

Execution starts and proceeds until step 4 'sysfs':
$ sudo dbginfo.sh
dbginfo.sh: Debug information script version 1.34.0-build-20180502
Copyright IBM Corp. 2002, 2016

Hardware platform = s390x
Kernel version = 4.15.0 (4.15.0-33-generic)
Runtime environment = LPAR

1 of 10: Collecting command output

2 of 10: Collecting z/VM command output skipped - no z/VM environment

3 of 10: Collecting procfs

4 of 10: Collecting sysfs

'dd' process with 100% CPU can be seen:

# ps aux | grep [d]d\
root 257158 100 0.0 2120 664 pts/0 R+ 06:51 11:18 dd if=/sys/kernel/debug/tracing/trace status=noxfer iflag=nonblock of=/tmp/DBGINFO-2018-10-22-06-49-52-s1lp15-1F8F67//sys/kernel/debug/tracing/trace

Happens on 16.04.5 with kernel 4.4 or HWE kernel 4.15.
But works fine on 18.04 (with kernel 4.15) and s390-tools 2.3.0-0ubuntu3.