1. 19 Aug, 2008 1 commit
    • Roland Dreier's avatar
      IPoIB: Fix deadlock on RTNL in ipoib_stop() · a77a57a1
      Roland Dreier authored
      Commit c8c2afe3 ("IPoIB: Use rtnl lock/unlock when changing device
      flags") added a call to rtnl_lock() in ipoib_mcast_join_task(), which
      is run from the ipoib_workqueue.  However, ipoib_stop() (which is run
      inside rtnl_lock()) flushes this workqueue, which leads to a deadlock
      if the join task is pending.
      
      Fix this by simply not flushing the workqueue from ipoib_stop().  It
      turns out that we really don't care about workqueue tasks running
      during or after ipoib_stop(), as long as we make sure to flush the
      workqueue before unregistering a netdev.
      
      This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1114>.
      Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
      a77a57a1
  2. 15 Aug, 2008 39 commits