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SubjectRe: [PATCH v8 2/4] perf inject: add jitdump mmap injection support
Em Thu, Feb 04, 2016 at 03:02:59PM -0800, Stephane Eranian escreveu:
> > I'm keeping what I have a perf/jit branch in my git tree.

What am I doing wrong? Continuing to investigate...

[acme@jouet linux]$ cd tools/perf/jvmti/
[acme@jouet jvmti]$ make clean
rm -f *.o *.so.* *.so *.lo
[acme@jouet jvmti]$ make
cc -fPIC -DPIC -I /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/include -I /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/include/linux -O2 -g -Werror -Wall -c libjvmti.c -o libjvmti.lo
cc -fPIC -DPIC -I /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/include -I /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/include/linux -O2 -g -Werror -Wall -c jvmti_agent.c -o jvmti_agent.lo
cc -I /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/include -I /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/include/linux -O2 -g -Werror -Wall -shared -Wl,-soname -Wl,libjvmti.so.1 -o libjvmti.so.1.0.0 libjvmti.lo jvmti_agent.lo -lelf -lrt
ln -sf libjvmti.so.1.0.0 libjvmti.so
[acme@jouet jvmti]$
[acme@jouet java]$ cat hello.java
public class hello {
public static void main(String[] args) {
System.out.println("Hello, World");
}
}
[acme@jouet java]$ javac hello.java
[acme@jouet java]$ java hello
Hello, World
[acme@jouet java]$
[acme@jouet java]$ java -agentpath:/home/acme/git/linux/tools/perf/jvmti/libjvmti.so hello.java
java: jvmti: jitdump in /home/acme/.debug/jit/java-jit-20160205.XXIKKHRA/jit-27730.dump
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f4aaed9bb3a, pid=27730, tid=139957992613632
#
# JRE version: OpenJDK Runtime Environment (8.0_71-b15) (build 1.8.0_71-b15)
# Java VM: OpenJDK 64-Bit Server VM (25.71-b15 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libc.so.6+0x8ab3a] strlen+0x2a
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/acme/java/hs_err_pid27730.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#
Aborted (core dumped)
[acme@jouet java]$
[acme@jouet java]$ type java
java is hashed (/usr/bin/java)
[acme@jouet java]$ ls -la /usr/bin/java
lrwxrwxrwx. 1 root root 22 Jan 26 10:45 /usr/bin/java -> /etc/alternatives/java
[acme@jouet java]$ ls -la /etc/alternatives/java
lrwxrwxrwx. 1 root root 71 Jan 26 10:45 /etc/alternatives/java -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/jre/bin/java
[acme@jouet java]$ rpm -qf /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/jre/bin/java
java-1.8.0-openjdk-headless-1.8.0.71-1.b15.fc23.x86_64
[acme@jouet java]$

[acme@jouet java]$ vim hs_err_pid27730.log
[acme@jouet java]$ ulimit -c unlimited
[acme@jouet java]$ rm -f *.log
[acme@jouet java]$
[acme@jouet java]$ java -agentpath:/home/acme/git/linux/tools/perf/jvmti/libjvmti.so hello.java
java: jvmti: jitdump in /home/acme/.debug/jit/java-jit-20160205.XXJ6KUZS/jit-27922.dump
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007fef53f31b3a, pid=27922, tid=140665269741312
#
# JRE version: OpenJDK Runtime Environment (8.0_71-b15) (build 1.8.0_71-b15)
# Java VM: OpenJDK 64-Bit Server VM (25.71-b15 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libc.so.6+0x8ab3a] strlen+0x2a
#
# Core dump written. Default location: /home/acme/java/core or core.27922
#
# An error report file with more information is saved as:
# /home/acme/java/hs_err_pid27922.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#
Aborted (core dumped)
[acme@jouet java]$ dnf --enablerepo='*debug*' install /usr/lib/debug/.build-id/4c/91a5aff28a4820b667eab14b2188229ef63503
java-1.8.0-openjdk-debuginfo-1.8.0.71-1.b15.fc23.x86_64.rpm 7.0 MB/s | 75 MB 00:10

[acme@jouet java]$ gdb -c core.27922
GNU gdb (GDB) Fedora 7.10.1-30.fc23
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
[New LWP 27935]
[New LWP 27922]
[New LWP 27926]
[New LWP 27923]
[New LWP 27924]
[New LWP 27925]
[New LWP 27933]
[New LWP 27928]
[New LWP 27929]
[New LWP 27934]
[New LWP 27930]
[New LWP 27936]
[New LWP 27931]
[New LWP 27927]
[New LWP 27932]
Reading symbols from /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/jre/bin/java...Reading symbols from /usr/lib/debug/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/jre/bin/java.debug...done.
done.
Missing separate debuginfo for /home/acme/git/linux/tools/perf/jvmti/libjvmti.so
Try: dnf --enablerepo='*debug*' install /usr/lib/debug/.build-id/af/a16eaaafdfc278c5ade69b9c63b20d733c0baf
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `java -agentpath:/home/acme/git/linux/tools/perf/jvmti/libjvmti.so hello.java'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007fef53edba98 in raise () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7fef2f6f6700 (LWP 27935))]
Missing separate debuginfos, use: dnf debuginfo-install elfutils-libelf-0.165-2.fc23.x86_64 glibc-2.22-7.fc23.x86_64 libgcc-5.3.1-2.fc23.x86_64 libstdc++-5.3.1-2.fc23.x86_64 zlib-1.2.8-9.fc23.x86_64
(gdb) bt
#0 0x00007fef53edba98 in raise () from /lib64/libc.so.6
#1 0x00007fef53edd69a in abort () from /lib64/libc.so.6
#2 0x00007fef53820ff9 in os::abort (dump_core=<optimized out>)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/os/linux/vm/os_linux.cpp:1500
#3 0x00007fef539d1737 in VMError::report_and_die (this=this@entry=0x7fef2f6f4310)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/share/vm/utilities/vmError.cpp:1060
#4 0x00007fef5382a2cf in JVM_handle_linux_signal (sig=sig@entry=11, info=info@entry=0x7fef2f6f45b0, ucVoid=ucVoid@entry=0x7fef2f6f4480,
abort_if_unrecognized=abort_if_unrecognized@entry=1)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp:541
#5 0x00007fef5381e138 in signalHandler (sig=11, info=0x7fef2f6f45b0, uc=0x7fef2f6f4480)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/os/linux/vm/os_linux.cpp:4233
#6 <signal handler called>
#7 0x00007fef53f31b3a in strlen () from /lib64/libc.so.6
#8 0x00007fef51e8e4c1 in compiled_method_load_cb (jvmti=0x7fef4c003ef0, method=<optimized out>, code_size=520, code_addr=0x7fef3d0ffd00, map_length=<optimized out>,
map=0x0, compile_info=0x7fef04019e80) at libjvmti.c:85
#9 0x00007fef536982b1 in JvmtiExport::post_compiled_method_load (nm=nm@entry=0x7fef3d0ffb90)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/share/vm/prims/jvmtiExport.cpp:1793
#10 0x00007fef536a68d4 in JvmtiDeferredEvent::post (this=<optimized out>)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/share/vm/prims/jvmtiImpl.cpp:957
#11 0x00007fef538c54a8 in ServiceThread::service_thread_entry (jt=0x7fef4c0d0000, __the_thread__=0x7fef4c0d0000)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/share/vm/runtime/serviceThread.cpp:120
#12 0x00007fef53976343 in JavaThread::thread_main_inner (this=this@entry=0x7fef4c0d0000)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/share/vm/runtime/thread.cpp:1699
#13 0x00007fef53976814 in JavaThread::run (this=0x7fef4c0d0000)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/share/vm/runtime/thread.cpp:1679
#14 0x00007fef5381ffc2 in java_start (thread=0x7fef4c0d0000)
at /usr/src/debug/java-1.8.0-openjdk-1.8.0.71-1.b15.fc23.x86_64/openjdk/hotspot/src/os/linux/vm/os_linux.cpp:782
#15 0x00007fef5489860a in start_thread () from /lib64/libpthread.so.0
#16 0x00007fef53fa9a4d in clone () from /lib64/libc.so.6
(gdb)


And it generates this file:

/home/acme/.debug/jit/java-jit-20160205.XXIKKHRA/jit-27730.dump

Continuing...

- Arnaldo

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