Bug 1327951

Summary: Upgraded samba 4.2.10 packages cause OS X guest mounts to fail
Product: Red Hat Enterprise Linux 7 Reporter: Toni Spets <toni.spets>
Component: sambaAssignee: Andreas Schneider <asn>
Status: CLOSED ERRATA QA Contact: Robin Hack <rhack>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.2CC: asn, bviktor, gdeschner, jrivera, kolasin2, luc.lalonde, rhack
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Fixed In Version: samba-4.4.4-1.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-11-04 07:00:38 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:

Description Toni Spets 2016-04-18 06:46:36 UTC
Description of problem:

After upgrading to new samba packages, OS X clients cannot authenticate as guests making local public network shares inaccessible.

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

Apr 18 08:14:06 Updated: samba-libs-4.2.10-6.el7_2.x86_64
Apr 18 08:14:07 Updated: samba-common-tools-4.2.10-6.el7_2.x86_64
Apr 18 08:14:07 Updated: samba-common-4.2.10-6.el7_2.noarch
Apr 18 08:14:07 Updated: samba-client-libs-4.2.10-6.el7_2.x86_64
Apr 18 08:14:07 Updated: samba-common-libs-4.2.10-6.el7_2.x86_64
Apr 18 08:14:09 Updated: samba-4.2.10-6.el7_2.x86_64

How reproducible:

Immediately after upgrade without any configuration changes. Windows and Linux clients can mount and work with the shares as usual.

Steps to Reproduce:
1. Upgrade to latest EL 7.2 samba packages
2. Try to mount a guest mountable network share using OS X Yosemite

Actual results:

OS X clients fail to mount with a generic error: 'There was a problem connecting to the server "<address>".'

Expected results:

Share mountable and browsable.

Additional info:

First encounter on production CentOS 7 server. Downgrading back to following packages works around the problem:

Apr 18 09:08:01 Installed: samba-libs-4.2.3-12.el7_2.x86_64
Apr 18 09:08:01 Installed: samba-common-tools-4.2.3-12.el7_2.x86_64
Apr 18 09:08:01 Installed: samba-common-4.2.3-12.el7_2.noarch
Apr 18 09:08:02 Installed: samba-client-libs-4.2.3-12.el7_2.x86_64
Apr 18 09:08:02 Installed: samba-common-libs-4.2.3-12.el7_2.x86_64
Apr 18 09:08:02 Installed: samba-4.2.3-12.el7_2.x86_64

I have confirmed this on up-to-date RHEL 7 VM with the developer license using identical package versions and epochs including downgrading.

Comment 2 Luc Lalonde 2016-05-11 18:51:17 UTC

I have the same problem...  We use our Samba fileserver for homedirs and profils in our Windows and Mac labs.

With this version of Samba, the Mac login session would lock-up and multiple 'smbd' with 100% CPU usage!

If I haden't notice this so quickly all our labs (Linux, Windows, Mac) would have been unuseable!

I grabbed the SRPMS from Fedora 24 testing and recompiled:


Everything works correctly now (CentOS 7.2).


Comment 3 Brent Kolasinski 2016-05-31 21:01:12 UTC
This is affecting me as well.  It appears that Debian has committed a fix to their packages last week:


The samba team also has committed a patch for this:

I am experiencing this problem on OS X hosts running 10.9-10.11.  In the mean time, I'll need to compile srpms from the Fedora Project, which is not a great solution in the long run.

I have also file a bug report with CentOS, which can be viewed here:


Comment 8 errata-xmlrpc 2016-11-04 07:00:38 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.