From: James Smart <james.smart@avagotech.com>
Date: Wed, 16 Dec 2015 23:11:56 +0000 (-0500)
Subject: lpfc: Fix driver crash when module parameter lpfc_fcp_io_channel set to 16
X-Git-Tag: firefly_0821_release~176^2~4^2~31^2~142
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7cf5c223ccf949e6d5ef6b87c33edcad67a8ebbe;p=firefly-linux-kernel-4.4.55.git

lpfc: Fix driver crash when module parameter lpfc_fcp_io_channel set to 16

[ Upstream commit 6690e0d4fc5cccf74534abe0c9f9a69032bc02f0 ]

Fix driver crash when module parameter lpfc_fcp_io_channel set to 16

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index b0d92b84bcdc..c14ab6c3ae40 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -8834,9 +8834,12 @@ found:
 				 * already mapped to this phys_id.
 				 */
 				if (cpup->irq != LPFC_VECTOR_MAP_EMPTY) {
-					chann[saved_chann] =
-						cpup->channel_id;
-					saved_chann++;
+					if (saved_chann <=
+					    LPFC_FCP_IO_CHAN_MAX) {
+						chann[saved_chann] =
+							cpup->channel_id;
+						saved_chann++;
+					}
 					goto out;
 				}