Wei-Chiu Chuang created HDFS-9268: ------------------------------------- Summary: JVM crashes when attempting to update a file in fuse file system using vim Key: HDFS-9268 URL: https://issues.apache.org/jira/browse/HDFS-9268 Project: Hadoop HDFS Issue Type: Bug Reporter: Wei-Chiu Chuang Assignee: Wei-Chiu Chuang Priority: Minor
JVM crashes when users attempt to use vi to update a file on fuse file system with insufficient permission. (I use CDH's hadoop-fuse-dfs wrapper script to generate the bug, but the same bug is reproducible in trunk) The root cause is a segfault in a pdfs-fuse method To reproduce it do as follows: mkdir /mnt/fuse chmod 777 /mnt/fuse ulimit -c unlimited # to enable coredump hadoop-fuse-dfs -odebug hdfs://localhost:9000/fuse /mnt/fuse touch /mnt/fuse/y chmod 600 /mnt/fuse/y vim /mnt/fuse/y (in vim, :w to save the file) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x0000003b82f27ad6, pid=26606, tid=140079005689600 # # JRE version: Java(TM) SE Runtime Environment (7.0_79-b15) (build 1.7.0_79-b15) # Java VM: Java HotSpot(TM) 64-Bit Server VM (24.79-b02 mixed mode linux-amd64 compressed oops) # Problematic frame: # C [libc.so.6+0x127ad6] __tls_get_addr@@GLIBC_2.3+0x127ad6 # # Core dump written. Default location: /home/weichiu/core or core.26606 # # An error report file with more information is saved as: # /home/weichiu/hs_err_pid26606.log # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. # /usr/bin/hadoop-fuse-dfs: line 29: 26606 Aborted (core dumped) env CLASSPATH="${CLASSPATH}" ${HADOOP_HOME}/bin/fuse_dfs $@ =========== The coredump shows the segfault comes from (gdb) bt #0 0x0000003b82e328e5 in raise () from /lib64/libc.so.6 #1 0x0000003b82e340c5 in abort () from /lib64/libc.so.6 #2 0x00007f66fc924d75 in os::abort(bool) () from /etc/alternatives/jre/jre/lib/amd64/server/libjvm.so #3 0x00007f66fcaa76d7 in VMError::report_and_die() () from /etc/alternatives/jre/jre/lib/amd64/server/libjvm.so #4 0x00007f66fc929c8f in JVM_handle_linux_signal () from /etc/alternatives/jre/jre/lib/amd64/server/libjvm.so #5 <signal handler called> #6 0x0000003b82f27ad6 in __strcmp_sse42 () from /lib64/libc.so.6 #7 0x00000000004039a0 in hdfsConnTree_RB_FIND () #8 0x0000000000403e8f in fuseConnect () #9 0x00000000004046db in dfs_chown () #10 0x00007f66fcf8f6d2 in ?? () from /lib64/libfuse.so.2 #11 0x00007f66fcf940d1 in ?? () from /lib64/libfuse.so.2 #12 0x00007f66fcf910ef in ?? () from /lib64/libfuse.so.2 #13 0x0000003b83207851 in start_thread () from /lib64/libpthread.so.0 #14 0x0000003b82ee894d in clone () from /lib64/libc.so.6 -- This message was sent by Atlassian JIRA (v6.3.4#6332)