EXCEPTION_ACCESS_VIOLATION in connection with COM ports

[Tapio_Angervuori]

LIBC PANIC!!
_um_free_maybe_lock: Tried to free block twice - block=031bf5c4 lock=0x1
pid=0x00a8 ppid=0x007c tid=0x0003 slot=0x00b3 pri=0x0200 mc=0x0000
F:\JAVA142_04\BIN\JAVA.EXE
Process dumping was disabled, use DUMPPROC / PROCDUMP to enable it.

What do I do next?

[Silvan Scherrer]

please provide more details about the java app you are trying. and how to reproduce that. we really can't read you mind.

[Tapio_Angervuori]

Replying to diver:

please provide more details about the java app you are trying. and how to reproduce that. we really can't read you mind.

By starting the program with the PRCDUMP ON, and with the ibmcomm.dll, javacomm.prp and comm.jar:

[E:\JVMVaaka\JVM]F:\java142_04\bin\java.exe -cp E:\JVMVAAKA\JVM;F:\java142_04\jre\lib\ext\comm.jar;.\.; SCALEX -s 194.137.111.68 80 -p COM2 COM1

LIBC PANIC!!
_um_free_maybe_lock: Tried to free block twice - block=031df5c4 lock=0x1
pid=0x00f7 ppid=0x0066 tid=0x0004 slot=0x00ad pri=0x0200 mc=0x0000
F:\JAVA142_04\BIN\JAVA.EXE
Process has been dumped

By replacing the windows OS/2 COM port software with the windows ones (WIN32COM.DLL, javax.comm.properties and COMM.JAR), the following messageges are seen:

Port COM2 not found!
Port COM1 not found!
No serial ports found!

I'm still using the old COM ports!

[Tapio_Angervuori]

Replying to Tapio_Angervuori:

Replying to diver:

please provide more details about the java app you are trying. and how to reproduce that. we really can't read you mind.

By starting the program with the PRCDUMP ON, and with the ibmcomm.dll, javacomm.prp and comm.jar:

[E:\JVMVaaka\JVM]F:\java142_04\bin\java.exe -cp E:\JVMVAAKA\JVM;F:\java142_04\jre\lib\ext\comm.jar;.\.; SCALEX -s 194.137.111.68 80 -p COM2 COM1

LIBC PANIC!!
_um_free_maybe_lock: Tried to free block twice - block=031df5c4 lock=0x1
pid=0x00f7 ppid=0x0066 tid=0x0004 slot=0x00ad pri=0x0200 mc=0x0000
F:\JAVA142_04\BIN\JAVA.EXE
Process has been dumped

By replacing the windows OS/2 COM port software with the windows ones (WIN32COM.DLL, javax.comm.properties and COMM.JAR), the following messageges are seen:

Port COM2 not found!
Port COM1 not found!
No serial ports found!

I'm still using the old COM ports!

P.S. The jre version 6 resides in the path F:\java142_04, The folders are only renamed!

[dmik]

Sorry, but it's still not clear on how to reproduce this. Please give us the exact versions of applications and DLLs you are trying to use.

[dmik]

Please note that the defect will be closed if there is no feedback within one week.

[Tapio_Angervuori]

The latest Build 22 RC2 (2011-03-28) goes further now:
Build 22 RC2 (2011-03-28)
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6e696e75, pid=6251, tid=409665540
#
# JRE version: 6.0-b22
# Java VM: OpenJDK Client VM (19.0-b09 mixed mode os2-x86 )
# Problematic frame:
# C 0x6e696e75
#
# An error report file with more information is saved as:
# E:\JVMprog\JVM\hs_err_pid6251.log
SYS1808:
The process has stopped. The software diagnostic
code (exception code) is 780E.

[Silvan Scherrer]

we still don't know which app you try. w/o this information we are not able to reproduce the problem.

[Tapio_Angervuori]

Here are the files for the Java Com API. The Com API is the latest one available from Sun.

[Tapio_angervuori]

Latest Java build, communication ports still not working.

[Tapio_angervuori]

I tried with the latest Java build, but there still seems to be some null pointers!
P.S. I also suddenly needed the stdcpp.dll, which has to be situated together with the jli.dll in the working directory!

[Tapio_angervuori]

Also the Odin build is the latest one odin32bin-0_8_3.WPI

[Silvan Scherrer]

if you read the odin wiki carefully you see which gcc4core is needed. this gcc4core brings all needed dll with it. if the odin wpi is done wrong please complain to the odin wpi creator. we only deliver rpm and zip of odin.

[Tapio_angervuori]

chashes in the beginning

[Tapio_angervuori]

crash in the beginning

[Tapio_angervuori]

crash in the beginnning

[Tapio_angervuori]

I tested the latest version OPENJDK6_B24 together with the odin-0.8.4: Communication ports are working again!
I got couple of crashes in the beginning, which luckily vanished and did not reappear.
These log files are attached.

[dmik]

Good, thanks for testing.

The logs look like the stack corruption (maybe due to the array overflow or like that). Hard to say more. Feel free to open a new report (+ all steps to reproduce, including JNI DLLs) if it reappears.