[SCSI] mpt2sas : running out of message frames

The driver is not freeing message frame when returning failure from
_ctl_do_task_abort.   If you call this function 500 times when its unable
to find an active task mid, you end up with no message frames.

Signed-off-by: Eric Moore <eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/scsi/mpt2sas/mpt2sas_ctl.c b/drivers/scsi/mpt2sas/mpt2sas_ctl.c
index 2d4f85c9d7a1..e0eab0a9bc4c 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_ctl.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_ctl.c
@@ -714,8 +714,10 @@ _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc,
 
                 if (tm_request->TaskType ==
                     MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) {
-                        if (_ctl_do_task_abort(ioc, &karg, tm_request))
+                        if (_ctl_do_task_abort(ioc, &karg, tm_request)) {
+                                mpt2sas_base_free_smid(ioc, smid);
                                 goto out;
+                        }
                 }
 
                 mutex_lock(&ioc->tm_cmds.mutex);