dbginfo.sh does not complete on Ubuntu 16.04(.5)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu on IBM z Systems |
Fix Released
|
High
|
bugproxy | ||
s390-tools (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Xenial |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
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-
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/
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.
----------
The regression risk of this fixed dbginfo.sh script and the updated s390-tools package is very low for the following reasons:
- the script is broken today on xenial, hence it cannot really get that worse...
- the fix was provided by IBM via a newer s390-tools package and was pretested by IBM before it was made available
- all this is limited to the s390x architecture and also to xenial (newer Ubuntu releases use newer packages)
- newer s390-tools packages that already incl. the fix are used in newer Ubuntu server releases and are known to work there
affects: | linux (Ubuntu) → s390-tools (Ubuntu) |
Changed in ubuntu-z-systems: | |
assignee: | nobody → bugproxy (bugproxy) |
importance: | Undecided → High |
tags: | added: architecture-s39064 bugnameltc-172506 severity-high targetmilestone-inin16045 |
tags: | added: id-5bfbdb2ac3ebd30311c929fd |
Changed in ubuntu-z-systems: | |
status: | Confirmed → In Progress |
Changed in ubuntu-z-systems: | |
status: | Fix Committed → Fix Released |
missing dump2tar in s390-tools 1.34.0
w/o dump2tar dbginfo.sh hangs in case huge amounts of devices are available