Date: Mon, 27 Oct 2008 08:26:04 GMT From: Nikolay Denev <ndenev@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: java/128411: jdk1.5 Querying JMX mbean OperatingSystem->TotalPhysicalMemorySize crashes the VM on 64bit archs. Message-ID: <200810270826.m9R8Q4Rf037573@www.freebsd.org> Resent-Message-ID: <200810270830.m9R8U7h9055596@freefall.freebsd.org>
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>Number: 128411 >Category: java >Synopsis: jdk1.5 Querying JMX mbean OperatingSystem->TotalPhysicalMemorySize crashes the VM on 64bit archs. >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-java >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Oct 27 08:30:06 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Nikolay Denev >Release: 7.1-PRERELEASE >Organization: >Environment: FreeBSD XXX 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #1: Wed Oct 22 15:35:49 UTC 2008 root@XXX:/usr/obj/usr/src/sys/CORE2 amd64 >Description: The FreeBSD specific part of the OperationgSystem mbean uses sysctl(3) to query various parameters related to memory usage. The sysctl(3) call requires an argument of type 'size_t' to set the size of the reqested value but in one place the bsd-jdk15-patchset uses variable of type 'int' for this, which does not work correctly because int is 32bits and size_t is 64bits on 64bit archs. Querying this attribute (TotalPhysicalMemorySize) results in VM crash. >How-To-Repeat: Start an application with remote JMX enabled and connect to it with jconsole. >Fix: The attached patch to the bsd-jdk15-patchset8 fixes the problem. Patch attached with submission follows: --- jdk15.patches 2008-02-05 07:01:27.000000000 +0200 +++ jdk15.patches.fixed 2008-10-24 11:58:53.000000000 +0300 @@ -90835,7 +90835,7 @@ +#ifdef _ALLBSD_SOURCE + unsigned long result; + int mib[2]; -+ int rlen; ++ size_t rlen; + + mib[0] = CTL_HW; + mib[1] = HW_PHYSMEM; >Release-Note: >Audit-Trail: >Unformatted:
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