From: Eric Moore <eric.moore@lsi.com>
Date: Tue, 21 Apr 2009 21:39:24 +0000 (-0600)
Subject: [SCSI] mpt2sas : running out of message frames
X-Git-Tag: firefly_0821_release~14261^2~10
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=77bdd9ee1e1d94fa853c354dcde881ddc5d277a5;p=firefly-linux-kernel-4.4.55.git

[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>
---

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);