jdk8-aarch32: Crashing when running test case ParallelProbes.java

[Anton Kozlov]

Hi, all,

looks familar.
Chi, could you add -XX:-UseBiasedLocking option?

Thanks,
Anton

On 11/10/2016 02:00 PM, Chi Vo wrote:
> Hi Sergey Nazarkin,
>
> Stack trace of the crash:
>
> [New LWP 26548]
> [New LWP 26530]
> [New LWP 26542]
> [New LWP 26531]
> [New LWP 26551]
> [New LWP 26535]
> [New LWP 26545]
> [New LWP 26544]
> [New LWP 26536]
> [New LWP 26546]
> [New LWP 26538]
> [New LWP 26543]
> [New LWP 26550]
> [New LWP 26539]
> [New LWP 26537]
> [New LWP 26552]
> [New LWP 26541]
> [New LWP 26540]
> [New LWP 26549]
> [New LWP 26547]
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library
> "/lib/arm-linux-gnueabihf/libthread_db.so.1".
> Core was generated by `/home/pi/workspace/openjdk/./j2re-image/bin/java
> -Dtest.src=/home/pi/workspace/'.
> Program terminated with signal SIGABRT, Aborted.
> #0  0x76df4f70 in __GI_raise (sig=sig at entry=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
> 56 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
> (gdb) bt
> #0  0x76df4f70 in __GI_raise (sig=sig at entry=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
> #1  0x76df6324 in __GI_abort () at abort.c:89
> #2  0x758acee8 in os::abort(bool) () from
> /home/pi/workspace/openjdk/j2re-image/lib/aarch32/client/libjvm.so
> #3  0x75917b64 in VMError::report_and_die() () from
> /home/pi/workspace/openjdk/j2re-image/lib/aarch32/client/libjvm.so
> #4  0x758b1952 in JVM_handle_linux_signal () from
> /home/pi/workspace/openjdk/j2re-image/lib/aarch32/client/libjvm.so
> #5  0x758ac140 in signalHandler(int, siginfo_t*, void*) () from
> /home/pi/workspace/openjdk/j2re-image/lib/aarch32/client/libjvm.so
> #6  <signal handler called>
> #7  0x758a7424 in ObjectMonitor::enter(Thread*) () from
> /home/pi/workspace/openjdk/j2re-image/lib/aarch32/client/libjvm.so
> #8  0x758e865a in ObjectSynchronizer::slow_enter(Handle, BasicLock*,
> Thread*) () from
> /home/pi/workspace/openjdk/j2re-image/lib/aarch32/client/libjvm.so
> #9  0x758d33fe in SharedRuntime::complete_monitor_locking_C(oopDesc*,
> BasicLock*, JavaThread*) () from
> /home/pi/workspace/openjdk/j2re-image/lib/aarch32/client/libjvm.so
> #10 0x734b5500 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb)
>
> If you want to get core file. Please contact me.
>
> Thanks & Best Regards,
> Chi Vo
>
> On Thu, Nov 10, 2016 at 5:10 PM, Sergey Nazarkin <snazarkin at azul.com> wrote:
>
>> Hi Chi Vo,
>>
>> Could you provide stack trace of the crash? I see no reason for race
>> condition here since the method doesn’t update any global variable.
>>
>>
>> Sergey Nazarkin
>>
>>
>>
>>
>>> On 10 Nov 2016, at 12:49, Chi Vo <thegeek108 at gmail.com> wrote:
>>>
>>> Hi All,
>>>
>>> Hotspot crashing when I running test case
>>> */jdk/test/java/nio/file/Files/probeContentType/ParallelProbes.java*
>>>
>>> As my analysis, the probeContentType is static method so It is class
>> level.
>>> In this case, we allow many threads access it without synchronize. so It
>>> should be protected by synchronizing to avoid any inconsistent data or
>> also
>>> corrupt data. I test this patch and it works fine.
>>>
>>> diff -r dbe7e2abe8b2 -r c9e2721b4711
>>> 02.src/01.aarch32_jdk8u/jdk/src/share/classes/java/nio/file/Files.java
>>> --- a/02.src/01.aarch32_jdk8u/jdk/src/share/classes/java/nio/
>> file/Files.java
>>> Fri
>>> Oct 07 15:23:45 2016 +0700
>>> +++ b/02.src/01.aarch32_jdk8u/jdk/src/share/classes/java/nio/
>> file/Files.java
>>> Tue
>>> Oct 25 10:56:47 2016 +0700
>>> @@ -1610,7 +1610,7 @@
>>>      *          If a security manager is installed and it denies an
>>> unspecified
>>>      *          permission required by a file type detector
>> implementation.
>>>      */
>>> -    public static String probeContentType(Path path)
>>> +    public synchronized static String probeContentType(Path path)
>>>         throws IOException
>>>     {
>>>         // try installed file type detectors
>>>
>>> Please help take a look my patch.
>>>
>>> Thanks you with best regards,
>>> Chi Vo
>>
>>
>
>