[Bugs] [Bug 1697971] New: Segfault in FUSE process, potential use after free

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1697971

            Bug ID: 1697971
           Summary: Segfault in FUSE process, potential use after free
           Product: GlusterFS
           Version: 6
          Hardware: x86_64
                OS: Linux
            Status: NEW
         Component: fuse
          Severity: urgent
          Assignee: bugs at gluster.org
          Reporter: manschwetus at cs-software-gmbh.de
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Created attachment 1553829
  --> https://bugzilla.redhat.com/attachment.cgi?id=1553829&action=edit
backtrace and threadlist

Description of problem:
We face regular segfaults of FUSE process, when running gitlab docker with data
placed on 1x3 glusterfs, all nodes running the container are gluster servers.

Version-Release number of selected component (if applicable):
We use latest packages available for ubuntu lts

# cat /etc/apt/sources.list.d/gluster-ubuntu-glusterfs-6-bionic.list
deb http://ppa.launchpad.net/gluster/glusterfs-6/ubuntu bionic main


How reproducible:
It happens regularly, at least daily, but we aren't aware of a specific
action/activity.

Steps to Reproduce:
1. setup docker swarm backed with glusterfs and run gitlab on it
2. ???
3. ???

Actual results:
Regular crashes of FUSE, cutting of persistent storage used for dockerized
gitlab

Expected results:
Stable availability of glusterfs

Additional info:
we preserve the produced corefiles, I'll attach bt and thread list of te one
today.

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