Public bug reported:
== Comment: #0 - VASANT HEGDE <hegdevas...@in.ibm.com> - 2020-11-23 23:23:22 ==
---Problem Description---
opal-prd fails to start on 20.04
Contact Information = Vasant hegde <hegdevas...@linux.vnet.ibm.com>
---uname output---
Ubuntu 20.04
Machine Type = All Power System
---Steps to Reproduce---
opal-prd fails to start on 20.04
Userspace tool common name: opal-prd
The userspace tool has the following bit modes: 64bit
Userspace rpm: opal-prd
This is fixed in upstream by below commit. Please backport this patch to
20.04 LTS release. Also applicable for 20.10.
commit 47005e8d4c9aeda5826c17c4a013cfbda1a3f2de
Author: Georgy Yakovlev <gyakov...@gentoo.org>
Date: Mon Oct 12 14:29:17 2020 -0700
opal-prd: handle devtmpfs mounted with noexec
On systems using recent versions of systemd /dev (devtmpfs) is mounted with
noexec option. Such mount prevents mapping HBRT image code region as RWX
from /dev. This commit, as suggested in github PR linked below, attempts to
work around the situation by copying HBRT image to anon mmaped memory
region and sets mprotect rwx on it, allowing opal-prd to sucessfully
execute the code region.
Having memory region set as RWX is not ideal for security, but fixing that
is a separate and hard to solve problem. Original code also mmaped region
as RWX, so this PR does not make things worse at least.
Closes: https://github.com/open-power/skiboot/issues/258
Signed-off-by: Georgy Yakovlev <gyakov...@gentoo.org>
Reviewed-by: Vasant Hegde <hegdevas...@linux.vnet.ibm.com>
[oliver: whitespace fix, add a comment, reflow commit message]
Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
-Vasant
** Affects: ubuntu-power-systems
Importance: Undecided
Status: New
** Affects: opal (Ubuntu)
Importance: Undecided
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: New
** Tags: architecture-ppc64le bugnameltc-189959 severity-critical
targetmilestone-inin20041
** Tags added: architecture-ppc64le bugnameltc-189959 severity-critical
targetmilestone-inin20041
** Changed in: ubuntu
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
** Package changed: ubuntu => opal (Ubuntu)
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https://bugs.launchpad.net/bugs/1905393
Title:
Ubuntu 20.04: opal-prd fails to start on 20.04
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