kernel-packages team mailing list archive

[Chris J Arges <1270237@xxxxxxxxxxxxxxxxxx>]

** Tags removed: verification-needed-precise verification-needed-quantal
** Tags added: verification-done-precise verification-done-quantal

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https://bugs.launchpad.net/bugs/1270237

Title:
  prevent the conntrack table from filling up in the kernel

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux-lts-raring” package in Ubuntu:
  Invalid
Status in “linux” source package in Precise:
  Fix Committed
Status in “linux-lts-raring” source package in Precise:
  Fix Committed
Status in “linux” source package in Quantal:
  Fix Committed
Status in “linux-lts-raring” source package in Quantal:
  Invalid
Status in “linux” source package in Raring:
  Invalid
Status in “linux-lts-raring” source package in Raring:
  Invalid

Bug description:
  [Impact]
  When running a server for an extended amount of time the conntrack table can fill up.
  Here is the netfilter discussion: http://www.spinics.net/lists/netfilter-devel/msg26759.html

  [Fix]
  https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6547a221871f139cc56328a38105d47c14874cbe

  Present in 3.11 >

  [Test Case]
  From the patch:
  When loose tracking is enabled (default), non-syn packets cause
  creation of new conntracks in established state with default timeout for
  established state (5 days).  This causes the table to fill up with UNREPLIED
  when the 'new ack' packet happened to be the last-ack of a previous,
  already timed-out connection.

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