Name: egR10015 Date: 04/08/2002



Hprof agent shipped with HotSpot 1.4.1-b07 fails to pass the following test

nsk/hprof/options/cutoff/cutoff006

from testbase_nsk on both Solarises (sparc,x86) and Linux platforms.
VM being run with the option "-Xrunhprof:cpu=times", crashes with the
unexpected signal 11.

There is the following bug:

4259542 HPROF: -Xrunhprof:cpu=times,... doesn't work

which already describes some issues with the option "cpu=times".
However, this case looks completely different.
The crash is easily reproducible every time _only_ on solx86 in
VM client mixed mode. On other Unix platforms (solsparc,linux) in
any modes and on the solx86 itself in server mode the crash is
observed very rarely. It is not reproducible on win2k in any VM
modes at all as well as with debugging VM on all platforms including
solx86.
Finally, HotSpot 1.4.0-b92 also successfully passes the test on all
platforms.

The mentioned test cutoff006 performs sanity check that HPROF
profiler agent can obtain CPU usage information, being run with the
option "cpu=times".

To reproduce the bug run with HS1.4.1

ksh doit.sh $JAVA_HOME [VM_MODE]

in /net/sqesvr.sfbay/export/vsn/GammaBase/Bugs/<this bug number>

where JAVA_HOME should point to jdk1.4.1
      VM_MODE is an optional parameter specifing VM mode

----------------- output on Solx86 with HS 1.4.1-b07: ------------------
$ ksh doit.ksh ~/hotspot/jdk1.4.1/solx86
Compiling test classes...
java version "1.4.1-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-beta-b07)
Java HotSpot(TM) Client VM (build 1.4.1-beta-b07, mixed mode)

----------------------------------
Executing the test (attempt #1)...
HPROF ERROR: thread local table NULL in method exit 80de938
HPROF ERROR: thread local table NULL in method exit 80de938
HPROF ERROR: thread local table NULL in method exit 80df928
HPROF ERROR : stack underflow in method exit
HPROF ERROR : stack underflow in method exit
Dumping CPU usage by timing methods ...
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0xDD0AC51F
Function=[Unknown. Nearest: hprof_get_trace+0x24F]
Library=/net/novo172/export/home/java/dest/jdk1.4.1-b07/solaris-i586/jre/lib/i586/libhprof.so

Current Java thread:
        at java.lang.Shutdown.halt(Native Method)
        at java.lang.Shutdown.exit(Shutdown.java:211)
        - locked <d6caae50> (a java.lang.Class)
        at java.lang.Runtime.exit(Runtime.java:90)
        at java.lang.System.exit(System.java:713)
        at cutoff006.main(cutoff006.java:25)

Dynamic libraries:
0x8050000 /home/eug/hotspot/jdk1.4.1/solx86/bin/java
0xdfb60000 /usr/lib/libthread.so.1
0xdfbb0000 /usr/lib/libdl.so.1
0xdfab0000 /usr/lib/libc.so.1
0xdecc0000
/net/novo172/export/home/java/dest/jdk1.4.1-b07/solaris-i586/jre/lib/i586/client/libjvm.so
0xdfa50000 /usr/lib/libCrun.so.1
0xdfa30000 /usr/lib/libsocket.so.1
0xdf990000 /usr/lib/libnsl.so.1
0xdf970000 /usr/lib/libm.so.1
0xdfa80000 /usr/lib/libw.so.1
0xdf930000 /usr/lib/libmp.so.2
0xdf8f0000
/net/novo172/export/home/java/dest/jdk1.4.1-b07/solaris-i586/jre/lib/i586/native_threads/libhpi.so
0xdf8c0000 /net/novo172/export/home/java/dest/jdk1.4.1-b07/solaris-i586/jre/lib/i586/libverify.so
0xdf870000 /net/novo172/export/home/java/dest/jdk1.4.1-b07/solaris-i586/jre/lib/i586/libjava.so
0xdf840000 /net/novo172/export/home/java/dest/jdk1.4.1-b07/solaris-i586/jre/lib/i586/libzip.so
0xdd0a0000 /net/novo172/export/home/java/dest/jdk1.4.1-b07/solaris-i586/jre/lib/i586/libhprof.so

Local Time = Mon Apr 8 18:24:09 2002
Elapsed Time = 0
#
# The exception above was detected in native code outside the VM
#
# Java VM: Java HotSpot(TM) Client VM (1.4.1-beta-b07 mixed mode)
#
# An error report file has been saved as hs_err_pid16743.log.
# Please refer to the file for further information.
#
doit.ksh[37]: 16743 Abort
exit code = 134
------------------------------------------------------------------------

----------------- output on Solx86 with HS 1.4.0-b92: ------------------
$ ksh doit.ksh ~/hotspot/jdk1.4/solx86
Compiling test classes...
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)

----------------------------------
Executing the test (attempt #1)...
HPROF ERROR: thread local table NULL in method exit 80de2ec
HPROF ERROR: thread local table NULL in method exit 80de2ec
HPROF ERROR: thread local table NULL in method exit 80e00fc
HPROF ERROR : stack underflow in method exit
HPROF ERROR : stack underflow in method exit
Dumping CPU usage by timing methods ... done.
exit code = 95
----------------------------------
Executing the test (attempt #2)...
HPROF ERROR: thread local table NULL in method exit 80de2ec
HPROF ERROR: thread local table NULL in method exit 80de2ec
HPROF ERROR: thread local table NULL in method exit 80e00fc
HPROF ERROR : stack underflow in method exit
HPROF ERROR : stack underflow in method exit
Dumping CPU usage by timing methods ... done.
exit code = 95
----------------------------------
Executing the test (attempt #3)...
<skipped>
----------------------------------
Executing the test (attempt #30)...
HPROF ERROR: thread local table NULL in method exit 80de2ec
HPROF ERROR: thread local table NULL in method exit 80de2ec
HPROF ERROR: thread local table NULL in method exit 80e00fc
HPROF ERROR : stack underflow in method exit
HPROF ERROR : stack underflow in method exit
Dumping CPU usage by timing methods ... done.
exit code = 95
----------------------------------------------------------------
Unable to reproduce the bug after 30 attempts. Please try again.
------------------------------------------------------------------------

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