[PATCH 4.4 051/192] [PATCH 052/135] lpfc: Fix driver crash when module parameter lpfc_fcp_io_channel set to 16
From: Greg Kroah-Hartman
Date: Mon Sep 12 2016 - 13:07:40 EST
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 6690e0d4fc5cccf74534abe0c9f9a69032bc02f0 ]
Fix driver crash when module parameter lpfc_fcp_io_channel set to 16
Signed-off-by: Dick Kennedy <dick.kennedy@xxxxxxxxxxxxx>
Signed-off-by: James Smart <james.smart@xxxxxxxxxxxxx>
Reviewed-by: Hannes Reinicke <hare@xxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_init.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- 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;
}