[SRU][Yakkety][PATCH 0/1] cifs: Do not send echoes before Negotiate is complete

Joseph Salisbury joseph.salisbury at canonical.com
Tue May 30 18:55:58 UTC 2017

BugLink: http://bugs.launchpad.net/bugs/1686099

== SRU Justification ==
This bug was also reported upstream against Debian.  A regression was introduced
by commit 4fcd1813e640.  After about 15 minutes, the cifsd daemon starts 
flooding echo requests on port 445 to the windows server causing a constant 
1MB/s load (around 10,000 packets per second) that eventually leads to 
system instability that forces a reboot to correct.

Commit 62a6cfddcc0a5313e7da3e8311ba16226fe0ac10 resolves this bug and was 
included in mailine as of 4.11-rc8.  It was also cc'd to stable.  
This commit was already picked up in X, Z and A via stable updates.  
However, since 4.8 is EOL, I'm requesting this commit as a SRU request for Yakkety.

== Fix ==
commit 62a6cfddcc0a5313e7da3e8311ba16226fe0ac10
Author: Sachin Prabhu <sprabhu at redhat.com>
Date:   Sun Apr 16 20:37:24 2017 +0100

    cifs: Do not send echoes before Negotiate is complete

== Regression Potential ==
Low regression potention.  This commit has already been included in X, Z and A
and has not caused any additional issues.

== Test Case ==
A test kernel was built with this patch and tested by the original bug reporter.
The bug reporter states the test kernel resolved the bug.

Sachin Prabhu (1):
  cifs: Do not send echoes before Negotiate is complete

 fs/cifs/smb1ops.c | 10 ++++++++++
 1 file changed, 10 insertions(+)


More information about the kernel-team mailing list