tree cd9a65fa2d45e6397ba1620846dc4c9359638df4
parent f95b35cfcacadac16dbc5477fd22b0786256a3d1
author Bart Van Assche <bvanassche@acm.org> 1376771683 +0000
committer Robert Love <robert.w.love@intel.com> 1378327522 -0700

libfc: Do not invoke the response handler after fc_exch_done()

While the FCoE initiator driver invokes fc_exch_done() from inside
the libfc response handler, FCoE target drivers typically invoke
fc_exch_done() from outside the libfc response handler. The object
fc_exch.arg points at may disappear as soon as fc_exch_done() has
finished. So it's important not to invoke the response handler
function after fc_exch_done() has finished. Modify libfc such that
this guarantee is provided if fc_exch_done() is invoked from
outside a response handler. This patch fixes a sporadic crash in
FCoE target implementations after a command has been aborted.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>