Two regression tests failed with JVM crash during execution with JDK 64 bit on Windows
----------System.out:(17/629)----------
Got synth: com.sun.media.sound.MixerSynth@7d67d940
Got soundbank: com.sun.media.sound.HeadspaceSoundbank@59de3f2d
Checking soundbank...
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000078d6f14f, pid=2776, tid=744
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.4.2_12-ea-b01 mixed mode)
# Problematic frame:
# C [kernel32.dll+0x2f14f]
#
# An error report file with more information is saved as hs_err_pid2776.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

----------System.out:(16/703)*----------
Test usingSequencer.setSequence(InputStream)
0: C:\\JQA\\tests\\workspace_142\\test\\javax\\sound\\midi\\File\\allaroun.mid...OK
1: C:\\JQA\\tests\\workspace_142\\test\\javax\\sound\\midi\\File\\allaroun.mid...#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000078d6f14f, pid=2648, tid=1452
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.4.2_12-ea-b01 mixed mode)
# Problematic frame:
# C [kernel32.dll+0x2f14f]
#
# An error report file with more information is saved as hs_err_pid2648.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

How to reproduce
use 1.4.2_12b1 64 bit (j2sdk-1_4_2_12-windows-amd64.exe) on Windows XP 64 bit
run JTreg with appropriate JDK
The workspace is placed on /net/latte.ireland/deployment1/regtests/142u12/
the JTreg is placed on /net/latte.ireland/deployment1/sqe-tools2.1.6fcs
to run please follow instructions http://jqa.ireland/procedures/test_procedures/141_test_procedures/RegressionTestExecution.html
And -automatic -bug:4835956 or -bug:4429762 flags to that script

The log of JVM crash is attached