A small application which plays midi notes continually will crash reliably after 38hours, 40 minutes of real time elapses. The app does not crash after this time if it is not playing midi notes.

Testcase:
========
Using attached java files, and jva 1.4.1_01:

javac Utils.java
Javac PlayIntervals.java
time java PlayIntervals

I use the time command as the app may crash during the night or when unobserved.

After the application output we see:

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0xFE49C96C
Function=PV_ServeStereoInterp2PartialBuffer+0x684
Library=/net/cafebabe.uk/export/apps/products/java/jdk/prodn/1.4.1_01/jre/lib/sp
arc/libjsound.so

Current Java thread:
        at com.sun.media.sound.MixerThread.runNative(Native Method)
        at com.sun.media.sound.MixerThread.run(MixerThread.java:314)

Dynamic libraries:
0x10000 java
0xff350000 /usr/lib/libthread.so.1
0xff390000 /usr/lib/libdl.so.1
0xff200000 /usr/lib/libc.so.1
0xff330000 /usr/platform/SUNW,Ultra-Enterprise/lib/libc_psr.so.1
0xfe000000 /net/cafebabe.uk/export/apps/products/java/jdk/prodn/1.4.1_01/jr
e/lib/sparc/client/libjvm.so
0xff1d0000 /usr/lib/libCrun.so.1
0xff1b0000 /usr/lib/libsocket.so.1
0xff100000 /usr/lib/libnsl.so.1
0xff0d0000 /usr/lib/libm.so.1
0xff300000 /usr/lib/libw.so.1
0xff0b0000 /usr/lib/libmp.so.2
0xff080000 /net/cafebabe.uk/export/apps/products/java/jdk/prodn/1.4.1_01/jr
e/lib/sparc/native_threads/libhpi.so
0xff050000 /net/cafebabe.uk/export/apps/products/java/jdk/prodn/1.4.1_01/jr
e/lib/sparc/libverify.so
0xfe7c0000 /net/cafebabe.uk/export/apps/products/java/jdk/prodn/1.4.1_01/jr
e/lib/sparc/libjava.so
0xff020000 /net/cafebabe.uk/export/apps/products/java/jdk/prodn/1.4.1_01/jr
e/lib/sparc/libzip.so
0xfe470000 /net/cafebabe.uk/export/apps/products/java/jdk/prodn/1.4.1_01/jr
e/lib/sparc/libjsound.so

Local Time = Fri Nov 29 01:48:19 2002
Elapsed Time = 139238
#
# The exception above was detected in native code outside the VM
#
# Java VM: Java HotSpot(TM) Client VM (1.4.1_01-b01 mixed mode)
#
# An error report file has been saved as hs_err_pid190.log.
# Please refer to the file for further information.
#
Abort(coredump)

real 38h40m41.14s
user 1h18m55.30s
sys 16m3.93s
sr-egmp03-03(5.8)$


Native stack from dbx:

detected a multithreaded program
t@13 (l@14) terminated by signal ABRT (Abort)
0xff369794: __sigprocmask+0x0008: jmp %o7 + 0x8
dbx>where -l
current thread: t@13
=>[1] libthread.so.1:__sigprocmask(0x0, 0xf1a803c0, 0x0, 0x0, 0x0, 0x0), at 0xff
369794
  [2] libthread.so.1:_resetsig(0xff36bf6c, 0x0, 0x0, 0xf1a81d70, 0xff37e000, 0x0
), at 0xff35e9a0
  [3] libthread.so.1:_sigon(0xf1a81d70, 0xff385938, 0x6, 0xf1a80494, 0xf1a81d70,
 0x6), at 0xff35e140
  [4] libthread.so.1:_thrp_kill(0x0, 0xd, 0x6, 0xff37e000, 0xd, 0xff2be448), at
0xff361180
  [5] libc.so.1:raise(0x6, 0x0, 0x0, 0xffffffff, 0xff2be3b4, 0x4), at 0xff24b758
  [6] libc.so.1:abort(0xff2ba000, 0xf1a805e8, 0x0, 0xfffffff8, 0x4, 0xf1a80609),
 at 0xff235a7c
  [7] libjvm.so:os::abort(0x1, 0xfe3ed105, 0xf1a80688, 0x0, 0xfe4394f0, 0xfe33a2
10), at 0xfe33ba30
  [8] libjvm.so:os::handle_unexpected_exception(0x1991b0, 0xb, 0xfe49c96c, 0xf1a
813c0, 0xb, 0x0), at 0xfe33a280
  [9] libjvm.so:JVM_handle_solaris_signal(0xfe49c96c, 0xf1a813c0, 0xf1a81108, 0x
4000, 0x4314, 0x0), at 0xfe33ded0
  [10] libthread.so.1:__sighndlr(0xb, 0xf1a813c0, 0xf1a81108, 0xfe33c7f8, 0xf1a8
1e14, 0xf1a81e04), at 0xff36b830
  [11] libthread.so.1:sigacthandler(0xb, 0xf1a81d70, 0x0, 0x0, 0x0, 0xff37e000),
 at 0xff368508
  ---- called from signal handler with signal 11 (SIGSEGV) ------
  [12] libjsound.so:PV_ServeStereoInterp2PartialBuffer(0x0, 0x80, 0x19923c, 0x0,
 0x0, 0x0), at 0xfe49c96c
  [13] 0xfe497398(0x0, 0x19923c, 0xf1a81568, 0xfe4bd368, 0x6b1d02e3, 0xf1a81468)
, at 0xfe497397
  [14] 0xfe497c60(0x19923c, 0x1af6c, 0x1ac00, 0xfe4bd368, 0x1dfd0, 0x1dc00), at
0xfe497c5f
  [15] libjsound.so:PV_ProcessSampleFrame(0x19923c, 0x196180, 0xb6aadb, 0xfe4bd3
68, 0x0, 0x0), at 0xfe498338
  [16] libjsound.so:HAE_BuildMixerSlice(0x1dc00, 0x196180, 0x800, 0x200, 0x19518
0, 0x0), at 0xfe497da8
  [17] libjsound.so:PV_AudioWaveOutFrameThread(0x40844000, 0x0, 0x0, 0x30c, 0x0,
 0x2e8), at 0xfe4a8764
  [18] libjsound.so:Java_com_sun_media_sound_MixerThread_runNative(0x19923c, 0xf
1a8187c, 0xffffffff, 0xfe4a8620, 0xfa415284, 0x0), at 0xfe47bf40
  [19] 0xfa40bbc8(0xf20af210, 0xb7, 0xf1a81904, 0xf1a8188c, 0x1991b0, 0xf1a81818
), at 0xfa40bbc7
  [20] 0xfa405c64(0xf1a81908, 0x0, 0x0, 0xfa415240, 0x35d1c8, 0xf1a818a8), at 0x
fa405c63
  [21] 0xfa400118(0xf1a81994, 0xf1a81c08, 0xa, 0xf6163ee8, 0xfa40aae0, 0xf1a81b2
8), at 0xfa400117
  [22] libjvm.so:JavaCalls::call_helper(0xf1a81c00, 0xf1a81a60, 0xf1a81b20, 0x19
91b0, 0x1991b0, 0xf1a81a74), at 0xfe0d4c10
  [23] libjvm.so:JavaCalls::call_virtual(0xfe424000, 0x1564a0, 0xf1a81b14, 0xf1a
81b10, 0xf1a81b20, 0x1991b0), at 0xfe0e695c
  [24] libjvm.so:JavaCalls::call_virtual(0xf1a81c00, 0xf1a81bfc, 0xf1a81bf0, 0xf
1a81be8, 0xf1a81be0, 0x1991b0), at 0xfe0e67bc
  [25] libjvm.so:thread_entry(0x1991b0, 0x1991b0, 0xceb30, 0x1564a0, 0x33dabc, 0
xfe0e642c), at 0xfe0e6744
  [26] libjvm.so:JavaThread::run(0x1991b0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0xfe0e64
54
  [27] libjvm.so:_start(0x1991b0, 0xff37f690, 0x1, 0x1, 0xff37e000, 0x0), at 0xf
e0d33e4


Core files and showrev -p output attached.