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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4136) libhdfs segfaults after recent changes
Date Thu, 01 Nov 2012 17:55:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13488886#comment-13488886
] 

Kihwal Lee commented on HDFS-4136:
----------------------------------

{panel:title=jvm crash log from jenkins build} 
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0xf6ee9b68, pid=14319, tid=4137109200
#
# JRE version: 6.0_26-b03
# Java VM: Java HotSpot(TM) Server VM (20.1-b02 mixed mode linux-x86 )
# Problematic frame:
# V  [libjvm.so+0x3efb68]  unsigned+0xb8
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#

---------------  T H R E A D  ---------------

Current thread (0x08b78c00):  JavaThread "main" [_thread_in_vm, id=14319, stack(0xffdbd000,0xffe0d000)]

siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x00000003

Registers:
EAX=0xaf8a5af0, EBX=0xf72fbdc8, ECX=0x00000ffc, EDX=0x00000180
ESP=0xffe0c960, EBP=0xffe0c988, ESI=0x08b78c00, EDI=0x00000003
EIP=0xf6ee9b68, EFLAGS=0x00010206, CR2=0x00000003

Top of Stack: (sp=0xffe0c960)
0xffe0c960:   08b78c00 08b78d20 aef400c0 aefe5154
0xffe0c970:   ffe0ca08 f776ad50 ffe0c9dc 08b78d20
0xffe0c980:   ae44ea40 ffe0cf08 ffe0ca08 0804aa73
0xffe0c990:   08b78d20 00000003 00000001 08b79dc0
0xffe0c9a0:   0804b738 0804b9b4 0804b828 00000001
0xffe0c9b0:   00000001 ffe0c9f0 f7765126 f7774ab8
0xffe0c9c0:   f69793b0 ffe0c9dc 08b79dc4 ae44ea40
0xffe0c9d0:   00000001 080487dc 0804d0a0 08b79dc8 

Instructions: (pc=0xf6ee9b68)
0xf6ee9b48:   0c 56 e8 01 36 2f 00 83 c4 10 c7 86 5c 01 00 00
0xf6ee9b58:   06 00 00 00 85 ff 74 0a 8b 83 dc 23 00 00 8b 00
0xf6ee9b68:   89 07 8b 75 d8 8b 83 24 0e 00 00 c7 86 5c 01 00
0xf6ee9b78:   00 07 00 00 00 8b 10 83 fa 01 7e 14 8b 83 f8 24 

Register to memory mapping:

EAX=0xaf8a5af0 is an oop
java.lang.Object 
 - klass: 'java/lang/Object'
EBX=0xf72fbdc8: <offset 0x801dc8> in /home/jenkins/tools/java/latest/jre/lib/i386/server/libjvm.so
at 0xf6afa000
ECX=0x00000ffc is an unknown value
EDX=0x00000180 is an unknown value
ESP=0xffe0c960 is pointing into the stack for thread: 0x08b78c00
EBP=0xffe0c988 is pointing into the stack for thread: 0x08b78c00
ESI=0x08b78c00 is a thread
EDI=0x00000003 is an unknown value


Stack: [0xffdbd000,0xffe0d000],  sp=0xffe0c960,  free space=318k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x3efb68]  unsigned+0xb8
C  [test_libhdfs_threaded+0x2a73]  __int128+0x253
C  [test_libhdfs_threaded+0x202f]  unsigned long+0xbf
C  [libc.so.6+0x16bd6]  __libc_start_main+0xe6
{panel}
                
> libhdfs segfaults after recent changes
> --------------------------------------
>
>                 Key: HDFS-4136
>                 URL: https://issues.apache.org/jira/browse/HDFS-4136
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: libhdfs
>    Affects Versions: 3.0.0
>            Reporter: Kihwal Lee
>            Priority: Critical
>
> After HDFS-3923, jvm segfaults during testing. It is also confising since it was committed
as HDFS-3916 (see CHANGES.txt and commit log).

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