[Bugs] [Bug 1452102] New: [DHt] : segfault in dht_selfheal_dir_setattr while running regressions

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1452102

            Bug ID: 1452102
           Summary: [DHt] : segfault in dht_selfheal_dir_setattr  while
                    running regressions
           Product: GlusterFS
           Version: mainline
         Component: distribute
          Assignee: bugs at gluster.org
          Reporter: aspandey at redhat.com
                CC: bugs at gluster.org



Description of problem:

Observed crashes in regression tests for two different patches executing 2
different tests.

1 - https://build.gluster.org/job/centos6-regression/4604/consoleFull
2 - https://build.gluster.org/job/centos6-regression/4670/consoleFull

Both are crashing in same function - 

[New Thread 25997]
07:32:45 [Thread debugging using libthread_db enabled]
07:32:45 Core was generated by `/build/install/sbin/glusterfs -s 127.1.1.1
--volfile-id rebalance/patchy --xlat'.
07:32:45 Program terminated with signal 11, Segmentation fault.
07:32:45 #0  0x00007fe59a3553d4 in dht_selfheal_dir_setattr
(frame=0x7fe580004c40, loc=0x7fe580001028, stbuf=0x7fe5800010b8,
valid=16777215, layout=0x7fe590020220) at
/home/jenkins/root/workspace/centos6-regression/xlators/cluster/dht/src/dht-selfheal.c:1180
07:32:45 1180                            gf_msg_trace (this->name, 0,
07:32:45 
07:32:45 Thread 12 (Thread 0x7fe599570700 (LWP 25997)):
07:32:45 #0  0x00007fe5a6dd01c3 in epoll_wait () from /lib64/libc.so.6
07:32:45 No symbol table info available.
07:32:45 #1  0x00007fe5a820050e in event_dispatch_epoll_worker
(data=0x7fe594039970) at
/home/jenkins/root/workspace/centos6-regression/libglusterfs/src/event-epoll.c:638
07:32:45         event = {events = 1, data = {ptr = 0x700000005, fd = 5, u32 =
5, u64 = 30064771077}}
07:32:45         ret = 0
07:32:45         ev_data = 0x7fe594039970
07:32:45         event_pool = 0x241efc0
07:32:45         myindex = 2
07:32:45         timetodie = 0
07:32:45         __FUNCTION__ = "event_dispatch_epoll_worker"
07:32:45 #2  0x00007fe5a7467aa1 in start_thread () from /lib64/libpthread.so.0
07:32:45 No symbol table info available.
07:32:45 #3  0x00007fe5a6dcfbcd in clone () from /lib64/libc.so.6


Version-Release number of selected component (if applicable):


How reproducible:

Frequently seen during regression.

Steps to Reproduce:
1.
2.
3.

Actual results:

 crash was seen in tests

Expected results:

There should not be any crash

Additional info:

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