[Bug 1814532] Re: Big samba memory leak fixed upstream

[Andreas Hasenack]

** Description changed:

+ [Impact]
+ 
+  * An explanation of the effects of the bug on users and
+ 
+  * justification for backporting the fix to the stable release.
+ 
+  * In addition, it is helpful, but not required, to include an
+    explanation of how the upload fixes this bug.
+ 
+ [Test Case]
+ 
+  * detailed instructions how to reproduce the bug
+ 
+  * these should allow someone who is not familiar with the affected
+    package to reproduce the bug and verify that the updated package fixes
+    the problem.
+ 
+ [Regression Potential]
+ 
+  * discussion of how regressions are most likely to manifest as a result
+ of this change.
+ 
+  * It is assumed that any SRU candidate patch is well-tested before
+    upload and has a low overall risk of regression, but it's important
+    to make the effort to think about what ''could'' happen in the
+    event of a regression.
+ 
+  * This both shows the SRU team that the risks have been considered,
+    and provides guidance to testers in regression-testing the SRU.
+ 
+ [Other Info]
+  
+  * Anything else you think is useful to include
+  * Anticipate questions from users, SRU, +1 maintenance, security teams and the Technical Board
+  * and address these questions in advance
+ 
+ [Original Description]
+ 
  There is a big memory leak bug in Samba 4.1 - 4.7.6. Depending on the
  circumstances all memory of the Ubuntu server will be eaten by Samba
  sooner or later. Then Linux Oom - killer will kill Samba which will
  either restart or hang.
  
  On our Ubuntu Server 14.04.5 I need to restart Samba 1 - 2 times a week.
  This bug probably affects also Ubuntu 18.04 if this fix has not yet been
  backported.
  
  This bug has been fixed upstream in Samba 4.7.7. The fix is only two
  lines of code and the bug is caused by a single misplaced "if" when
  releasing memory.
  
  This upstream commit fixes the bug: https://gitlab.com/samba-
  team/samba/commit/461a1172ff819692aa0a2dc5ce7fc5379c8a529e
  
  This is the Samba bug report:
  https://bugzilla.samba.org/show_bug.cgi?id=13372
  
  And here the author apologizes for the bug :)
  https://lists.samba.org/archive/samba-technical/2018-April/126937.html
  
  Please backport this fix to Ubuntu 14.04 and 18.04, thanks :)
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: samba 2:4.3.11+dfsg-0ubuntu0.14.04.19
  ProcVersionSignature: Ubuntu 3.13.0-164.214-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-164-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.29
  Architecture: amd64
  BothFailedConnect: Yes
  Date: Mon Feb  4 11:34:06 2019
  InstallationDate: Installed on 2014-09-25 (1592 days ago)
  InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3)
  SambaServerRegression: Yes
  SmbConfIncluded: No
  SourcePackage: samba
  UpgradeStatus: No upgrade log present (probably fresh install)
  upstart.samba-ad-dc.override: manual

-- 
You received this bug notification because you are a member of Ubuntu
Server, which is subscribed to the bug report.
https://bugs.launchpad.net/bugs/1814532

Title:
  Big samba memory leak fixed upstream

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1814532/+subscriptions