[Bugs] [Bug 1143835] New: dht crashed on running regression with floating point exception

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1143835

            Bug ID: 1143835
           Summary: dht crashed on running regression with floating point
                    exception
           Product: GlusterFS
           Version: mainline
         Component: distribute
          Assignee: gluster-bugs at redhat.com
          Reporter: pkarampu at redhat.com
                CC: bugs at gluster.org



Description of problem:
This is the run of the regression:
http://build.gluster.org/job/rackspace-regression-2GB-triggered/1559/consoleFull

(gdb) bt
#0  0x00007fb74f7fc418 in dht_selfheal_layout_new_directory
(frame=0x7fb75a34a1a4, loc=0x7fb74c5dc898, layout=0x144f960)
    at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/xlators/cluster/dht/src/dht-selfheal.c:1068
#1  0x00007fb74f7fc7d0 in dht_selfheal_dir_getafix (frame=0x7fb75a34a1a4,
loc=0x7fb74c5dc898, layout=0x144f960)
    at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/xlators/cluster/dht/src/dht-selfheal.c:1133
#2  0x00007fb74f7fcbe4 in dht_selfheal_directory (frame=0x7fb75a34a1a4,
dir_cbk=0x7fb74f808a19 <dht_lookup_selfheal_cbk>, loc=0x7fb74c5dc898,
layout=0x144f960)
    at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/xlators/cluster/dht/src/dht-selfheal.c:1243
#3  0x00007fb74f80acb0 in dht_lookup_dir_cbk (frame=0x7fb75a34a1a4,
cookie=0x7fb75a34a2fc, this=0x1455580, op_ret=0, op_errno=22,
inode=0x7fb74e2e204c, stbuf=0x7fff8f7b51e0, xattr=0x7fb759d45650, 
    postparent=0x7fff8f7b5170) at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/xlators/cluster/dht/src/dht-common.c:578
#4  0x00007fb74fa7871d in client3_3_lookup_cbk (req=0x7fb74c5924e4,
iov=0x7fb74c592524, count=1, myframe=0x7fb75a34a2fc)
    at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/xlators/protocol/client/src/client-rpc-fops.c:2769
#5  0x00007fb75c0d9c49 in rpc_clnt_handle_reply (clnt=0x14901e0,
pollin=0x144f4b0) at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/rpc/rpc-lib/src/rpc-clnt.c:766
#6  0x00007fb75c0da06a in rpc_clnt_notify (trans=0x14c61f0, mydata=0x1490210,
event=RPC_TRANSPORT_MSG_RECEIVED, data=0x144f4b0)
    at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/rpc/rpc-lib/src/rpc-clnt.c:894
#7  0x00007fb75c0d65c0 in rpc_transport_notify (this=0x14c61f0,
event=RPC_TRANSPORT_MSG_RECEIVED, data=0x144f4b0)
    at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/rpc/rpc-lib/src/rpc-transport.c:516
#8  0x00007fb7512beec8 in socket_event_poll_in (this=0x14c61f0) at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/rpc/rpc-transport/socket/src/socket.c:2136
#9  0x00007fb7512bf383 in socket_event_handler (fd=8, idx=7, data=0x14c61f0,
poll_in=1, poll_out=0, poll_err=0)
    at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/rpc/rpc-transport/socket/src/socket.c:2249
#10 0x00007fb75c379b2b in event_dispatch_epoll_handler (event_pool=0x142f3c0,
events=0x144dd60, i=0) at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/libglusterfs/src/event-epoll.c:384
#11 0x00007fb75c379d25 in event_dispatch_epoll (event_pool=0x142f3c0) at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/libglusterfs/src/event-epoll.c:445
#12 0x00007fb75c346c53 in event_dispatch (event_pool=0x142f3c0) at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/libglusterfs/src/event.c:113
#13 0x0000000000409750 in main (argc=11, argv=0x7fff8f7b6908) at
/home/jenkins/root/workspace/rackspace-regression-2GB-triggered/glusterfsd/src/glusterfsd.c:2043

One of the following divisions should be the reason:

        if (weight_by_size) {
                /* We know total_size is not zero. */
                chunk = ((unsigned long) 0xffffffff) / total_size;
                gf_log (this->name, GF_LOG_INFO,
                        "chunk size = 0xffffffff / %u = 0x%x",
                        total_size, chunk);
        }
        else {
                chunk = ((unsigned long) 0xffffffff) / bricks_used;
        }


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


How reproducible:
Not sure

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

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