[Bugs] [Bug 1716875] New: Inode Unref Assertion failed: inode->ref

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1716875

            Bug ID: 1716875
           Summary: Inode Unref Assertion failed: inode->ref
           Product: GlusterFS
           Version: 4.1
          Hardware: x86_64
                OS: Linux
            Status: NEW
         Component: gluster-smb
          Severity: urgent
          Assignee: bugs at gluster.org
          Reporter: ryan at magenta.tv
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Created attachment 1577014
  --> https://bugzilla.redhat.com/attachment.cgi?id=1577014&action=edit
Client log from Gluster VFS client showing high RAM usage

Description of problem:
Samba using huge amounts of memory (5GB) per client thread.
Upon checking the Gluster client logs, it's filled with messages such as:
[2019-04-24 07:44:33.607834] E [inode.c:484:__inode_unref]
(-->/lib64/libglusterfs.so.0(gf_dirent_entry_free+0x2b) [0x7ff0a24d555b]
-->/lib64/libglusterfs.so.0(inode_unref+0x21) [0x7ff0a24b9921]
-->/lib64/libglusterfs.so.0(+0x35156) [0x7ff0a24b9156] ) 0-: Assertion failed:
inode->ref
[2019-04-30 13:16:47.169047] E [timer.c:37:gf_timer_call_after]
(-->/lib64/libglusterfs.so.0(+0x33bec) [0x7ff09d875bec]
-->/lib64/libgfrpc.so.0(+0xde88) [0x7ff09dd7ae88]
-->/lib64/libglusterfs.so.0(gf_timer_call_after+0x229) [0x7ff09d875fa9] )
0-timer: Either ctx is NULL or ctx cleanup started [Invalid argument]
[2019-05-28 17:47:28.655550] E [MSGID: 140003] [nl-cache.c:777:nlc_init]
0-mcv01-nl-cache: Initing the global timer wheel failed
[2019-05-28 17:47:28.655873] E [MSGID: 101019] [xlator.c:720:xlator_init]
0-mcv01-nl-cache: Initialization of volume 'mcv01-nl-cache' failed, review your
volfile again
[2019-05-28 17:47:28.655887] E [MSGID: 101066]
[graph.c:367:glusterfs_graph_init] 0-mcv01-nl-cache: initializing translator
failed
[2019-05-28 17:47:28.655894] E [MSGID: 101176]
[graph.c:738:glusterfs_graph_activate] 0-graph: init failed
[2019-05-28 17:47:28.655972] E [MSGID: 104007]
[glfs-mgmt.c:744:glfs_mgmt_getspec_cbk] 0-glfs-mgmt: failed to fetch volume
file (key:mcv01) [Invalid argument]

Version-Release number of selected component (if applicable):
Gluster 4.1.7


How reproducible:
Unknown

Steps to Reproduce:
Unsure how to reproduce, only seen this in one environment currently

Actual results:
All system memory and swap is exhausted. SMBD processes do not get killed off
when main SMB service is stopped, where as usually they do.

Expected results:
System resources are freed up and errors are not present in logs.

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