Debugging segmentation faults in the JVM on linux-powerpc

[John Paul Adrian Glaubitz]

On 06/09/2017 08:57 PM, John Paul Adrian Glaubitz wrote:
> It's still building, let's see if it actually succeeds.

It does. And it fails again with "--with-debug-level=fastdebug":

#  Internal Error (/<<PKGBUILDDIR>>/src/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.cpp:260), pid=46604, tid=46606
#  fatal error:
#
#    /--------------------\
#    | segmentation fault |
#    \---\ /--------------/
#        /
#    [-]        |\_/|
#    (+)=C      |o o|__
#    | |        =-*-=__\
#    OOO        c_c_(___)
#
# JRE version: OpenJDK Runtime Environment (9.0) (fastdebug build 9-Debian+0-9b170-2)
# Java VM: OpenJDK Zero VM (fastdebug 9-Debian+0-9b170-2, interpreted mode, serial gc, linux-ppc)
# No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again

Logs:

--with-debug-level=slowdebug (succeeds):

> https://buildd.debian.org/status/fetch.php?pkg=openjdk-9&arch=powerpc&ver=9%7Eb170-2&stamp=1497054989&raw=0

--with-debug-level=fastdebug (fails):

> https://buildd.debian.org/status/fetch.php?pkg=openjdk-9&arch=powerpc&ver=9%7Eb170-2&stamp=1497076948&raw=0

Does any of the JVM wizards have an idea? I haven't looked at the code yet myself :).

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
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