** Also affects: openjdk-8 (Ubuntu Xenial)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1594393
Title:
JVM on PPC64 LE crashes due to an illegal instruction in JITed code
Status in openjdk-8 package in Ubuntu:
Fix Released
Status in openjdk-8 source package in Xenial:
New
Bug description:
== Comment: #0 - Gustavo Bueno Romero <grom...@br.ibm.com> - 2016-06-17
15:06:02 ==
---Problem Description---
JVM on PPC64 LE crashes due to an illegal instruction in JITed code. The root
cause is that the unaligned 4-byte displacement in instructions like LWA (Load
Word Algebraic, a DS-from instruction) is not handled correctly and yields an
illegal instruction inside the JITed method
Contact Information = grom...@br.ibm.com
---uname output---
Linux hostname 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:25:36 UTC 2016
ppc64le ppc64le ppc64le GNU/Linux
Machine Type = Not relevant
---Debugger---
A debugger is not configured
---Steps to Reproduce---
Please find a test case at: https://bugs.openjdk.java.net/browse/JDK-8158260
Userspace tool common name: javac, java
The userspace tool has the following bit modes: 64-bit
Userspace rpm: openjdk-8-jdk:ppc64el
8u91-b14-0ubuntu4~16.04.1
Userspace tool obtained from project website: na
*Additional Instructions for grom...@br.ibm.com:
-Attach ltrace and strace of userspace application.
== Comment: #1 - Gustavo Bueno Romero <grom...@br.ibm.com> - 2016-06-17
15:06:43 ==
JVM on PPC64 LE crashes due to an illegal instruction in JITed code. The root
cause is that the unaligned 4-byte displacement in instructions like LWA (Load
Word Algebraic, a DS-from instruction) is not handled correctly and yields an
illegal instruction inside the JITed method [1]. The patch is already available
upstream on OpenJDK 9 [2] and applying it to jdk8u is trivial [3].
Could you please proceed to apply the patch [2] (PPC-only code is
affect) in order to fix the issue described?
Thank you.
[1] https://bugs.openjdk.java.net/browse/JDK-8158260
[2]http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/5f3687f2143c
[3]
http://mail.openjdk.java.net/pipermail/ppc-aix-port-dev/2016-June/002569.html
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