JDK-8220794 : PPC64: Fix signal handler for SIGSEGV on branch to illegal address
- Type: Bug
- Component: hotspot
- Sub-Component: runtime
- Affected Version: 13
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: linux
- CPU: ppc
- Submitted: 2019-03-18
- Updated: 2019-05-06
- Resolved: 2019-03-26
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 11 | JDK 13 |
|---|---|
| 11.0.4Fixed | 13 b14Fixed  |
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Description
Currently JVM on Linux/PPC64 can crash silently if a SIGSEGV is cause not due to a load/store from/to an illegal data address but due to a branch to an invalid (not mapped / no execution allowed) address. That issue was reported by Goetz (SAP) who provided an easy way to reproduce it: on a debug build, run the JVM with the following flags: ~/openjdks/jdk_tip_564043cbe138/bin$ ./java -XX:-UseSIGTRAP -XX:-CreateCoredumpOnCrash -XX:ErrorHandlerTest=13 Segmentation fault (core dumped) It will crash silently instead of in a controlled way triggered by VMError::controlled_crash(). Goetz sees the error only on linux ppc64 le (ABI ELFv2), not on linux ppc64 be (ABI ELFv1) nor AIX. It is failing since the ppc64le port was introduced. HE tested this on the following OSes: Ubuntu 16.04.3 LTS 4.4.0-101-generic RHEL 7.2 3.10.0-327.10.1.el7.ppc64le RHEL 7.3 3.10.0-693.2.2.el7.ppc64le RHEL 7.4 3.10.0-693.1.1.el7.ppc64le SLES 12.1 3.12.57-60.35-default SLES 12.3 4.4.126-94.22-default SLES 15.0 4.12.14-25.16-default
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