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

[Chi Vo]

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
>
>


-- 
Vo Trung Chi
University of Technical Education Ho Chi Minh City
Computer Engineering Technology
Embedded Software Engineer @ Global CyberSoft (Viet Nam) JSC
Phone:    (+84)97279 0898
Email:    votrungchi_108 at live.com