commit dc66c74de6f4238020db3e2041d4aca5c5b3e9bc
author Philipp Reisner <philipp.reisner@linbit.com> Wed Jun 02 14:31:29 2010 +0200
committer Philipp Reisner <philipp.reisner@linbit.com> Mon Jun 14 12:19:41 2010 +0200
tree 8df9cdd2f1672217a210e624f4613744e57450e0
parent 7e27d6e778cd87b6f2415515d7127eba53fe5d02

drbd: Fixed a race between disk-attach and unexpected state changes

This was a very hard to trigger race condition.

If we got a state packet from the peer, after drbd_nl_disk() has
already changed the disk state to D_NEGOTIATING but
after_state_ch() was not yet run by the worker, then receive_state()
might called drbd_sync_handshake(), which in turn crashed
when accessing p_uuid.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>