Comment 21 for bug 1700270

Revision history for this message
Rostislav Stříbrný (rstribrn) wrote :

THIS COMMENT ALSO ADDED TO (PARENT) BUG
    https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1699772

However, that bug has FixReleased (at least for 64-bit JVMs). I guess it should be also fixed for 32-bit JVMs launched from C on 64-bit kernel.

I'm not sure, whether it would be better adding this comment just to Bug 1699772, or just to this ("duplicate") Bug 1700270, or creating just another bug ID.
I have chosen adding it to Bug 1699772 and also here, since my code example is based on previously-provided test.c which I downloaded from Bug 1700270.

ORIGINAL COMMENT:

Rostislav Stříbrný (rstribrn) wrote 2 hours ago:
Hi,
problem still present on linux-image-4.8.0-58-generic with these conditions:
    - while executing JVM launched from >>32-bit<< C (on 64-bit kernel)
    - defining "higher" JVM stack size (eg. -Xss2048k JVM argument)

=> causes JVM segmentation fault

Attached test case (sources + binary + output logs): Bug1699772_i386_jvm_segfault_problem.tgz
test_case1.c (32-bit) => using -Xss1024k => RUNS OK.
test_case2.c (32-bit) => using -Xss2048k => Segmentation fault.
test_case1.c (64-bit) => using -Xss1024k => RUNS OK.
test_case2.c (64-bit) => using -Xss2048k => RUNS OK.

My system:
cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"

with linux-generic-hwe-16.04

uname -a
Linux L34001100621 4.8.0-58-generic #63~16.04.1-Ubuntu SMP Mon Jun 26 18:08:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux