[Bugs] [Bug 1716440] New: SMBD thread panics when connected to from OS X machine

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1716440

            Bug ID: 1716440
           Summary: SMBD thread panics when connected to from OS X machine
           Product: GlusterFS
           Version: 6
          Hardware: x86_64
                OS: Linux
            Status: NEW
         Component: libgfapi
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: ryan at magenta.tv
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Created attachment 1576680
  --> https://bugzilla.redhat.com/attachment.cgi?id=1576680&action=edit
Debug level 10 log of client connection when panic occurs

Description of problem:
When connecting to a share, the SMB thread for that client panics and
constantly restarts. This was tested from a machine running OS X 10.14.4. I've
not been able to test from a windows machine yet.

Version-Release number of selected component (if applicable):
Gluster = 6.1
Samba = 4.9.6

How reproducible:
Every time

SMB configuration:
[global]
security = user
netbios name = NAS01
clustering = no
server signing = no

max log size = 10000
log file = /var/log/samba/log-%M-test.smbd
logging = file
log level = 10

passdb backend = tdbsam
guest account = nobody
map to guest = bad user

force directory mode = 0777
force create mode = 0777
create mask = 0777
directory mask = 0777

store dos attributes = yes

load printers = no
printing = bsd
printcap name = /dev/null
disable spoolss = yes

glusterfs:volfile_server = localhost

kernel share modes = No

[VFS]
vfs objects = glusterfs
glusterfs:volume = mcv02
path = /
read only = no
guest ok = yes

Steps to Reproduce:
1. Use provided SMB configuration
2. Restart SMB service
3. Connect to share from client using guest user
4. Tail client logs on server to see panics

Actual results:
SMB thread panics and restarts


Expected results:
Client connects and SMB thread doesn't panic

Additional info:
Tested without Gluster VFS and used the FUSE mount point instead and system did
not panic

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