Bug 1419701

Summary:	SMB: Crash reported in SMB when deleting files.
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Ben Turner <bturner>
Component:	samba	Assignee:	Michael Adam <madam>
Status:	CLOSED NOTABUG	QA Contact:	surabhi <sbhaloth>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	rhgs-3.2	CC:	anoopcs, bturner, rhs-smb
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-02-08 15:25:18 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Ben Turner 2017-02-06 19:39:12 UTC

Description of problem:

SMB crashed when I was running cleanup on a smallfile test.

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

glusterfs-3.8.4-12.el7rhgs.x86_64

How reproducible:

Intermittent.

Steps to Reproduce:
1.  Run smallfile create
2.  Run smallfile cleanup

Actual results:

Occasional crashes reported.

Expected results:

Normal operation.

Additional info:

Comment 3 Ben Turner 2017-02-06 19:45:48 UTC

Core was generated by `/usr/sbin/smbd'.
Program terminated with signal 6, Aborted.
#0  0x00007f14e38661d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56	  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(gdb) bt
#0  0x00007f14e38661d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007f14e38678c8 in __GI_abort () at abort.c:90
#2  0x00007f14e51c6c2b in dump_core () at ../source3/lib/dumpcore.c:322
#3  0x00007f14e51b9fe7 in smb_panic_s3 (why=<optimized out>) at ../source3/lib/util.c:814
#4  0x00007f14e76ac59f in smb_panic (why=why@entry=0x7f14e7d48fa0 "reinit_after_fork() failed") at ../lib/util/fault.c:166
#5  0x00007f14e7d4837c in smbd_accept_connection (ev=0x7f14e8ea66f0, fde=<optimized out>, flags=<optimized out>, private_data=<optimized out>) at ../source3/smbd/server.c:759
#6  0x00007f14e51cf3dc in run_events_poll (ev=0x7f14e8ea66f0, pollrtn=<optimized out>, pfds=0x7f14e8ebca90, num_pfds=7) at ../source3/lib/events.c:257
#7  0x00007f14e51cf630 in s3_event_loop_once (ev=0x7f14e8ea66f0, location=<optimized out>) at ../source3/lib/events.c:326
#8  0x00007f14e3bf640d in _tevent_loop_once (ev=ev@entry=0x7f14e8ea66f0, location=location@entry=0x7f14e7d4b776 "../source3/smbd/server.c:1127") at ../tevent.c:533
#9  0x00007f14e3bf65ab in tevent_common_loop_wait (ev=0x7f14e8ea66f0, location=0x7f14e7d4b776 "../source3/smbd/server.c:1127") at ../tevent.c:637
#10 0x00007f14e7d43ad4 in smbd_parent_loop (parent=<optimized out>, ev_ctx=0x7f14e8ea66f0) at ../source3/smbd/server.c:1127
#11 main (argc=<optimized out>, argv=<optimized out>) at ../source3/smbd/server.c:1780

Comment 5 Anoop C S 2017-02-07 06:39:36 UTC

Hi Ben,

I think Vivek already hit this issue while running regression tests sometime back and reported BZ 1400957(see the bt from bug description). You can find the reason for closing that bug as the last comment. 

So in order to confirm whether this is the same case or not we need ctdb logs from the Samba server where it crashed.

Comment 6 Ben Turner 2017-02-08 15:25:18 UTC

After talking iwth Anoop we think this was caused by:

https://bugzilla.redhat.com/show_bug.cgi?id=1400957#c9

I am closing this as NOTABUG.