diff mbox

[2/7] aacraid: IOCTL pass-through command fix

Message ID 307F48E420013C4E85C75C93E532197AB8092024@BBYEXM01.pmc-sierra.internal (mailing list archive)
State New, archived
Headers show

Commit Message

Achim Leubner March 17, 2015, 3:26 p.m. UTC 
Reviewed-by: Achim Leubner <Achim.Leubner@pmcs.com>

-----Original Message-----
From: Mahesh Rajashekhara 
Sent: Wednesday, March 4, 2015 9:38 AM
To: JBottomley@Parallels.com; linux-scsi@vger.kernel.org
Cc: aacraid@pmc-sierra.com; Harry Yang; Achim Leubner; Rajinikanth Pandurangan; Rich Bono; Mahesh Rajashekhara
Subject: [PATCH 2/7] aacraid: IOCTL pass-through command fix

The Linux aacriad driver fails to detect the case of SG list count=0 on IOCTL pass-through command and cause intermittent fault.
The result is the Linux aacriad driver send down IOCTL pass-through command with one not initialized SG list to firmware when receiving SG list count =0 on pass-through command.

Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
---
 drivers/scsi/aacraid/commctrl.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

 			}
 		}
 		srbcmd->count = cpu_to_le32(byte_count);
-		psg->count = cpu_to_le32(sg_indx+1);
+		if (user_srbcmd->sg.count)
+			psg->count = cpu_to_le32(sg_indx+1);
+		else
+			psg->count = 0;
 		status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
 	}
 	if (status == -ERESTARTSYS) {
--
1.7.7.3

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Comments

Hannes Reinecke March 18, 2015, 11:03 a.m. UTC | #1 
On 03/17/2015 04:26 PM, Achim Leubner wrote:
> Reviewed-by: Achim Leubner <Achim.Leubner@pmcs.com>
> 
> -----Original Message-----
> From: Mahesh Rajashekhara 
> Sent: Wednesday, March 4, 2015 9:38 AM
> To: JBottomley@Parallels.com; linux-scsi@vger.kernel.org
> Cc: aacraid@pmc-sierra.com; Harry Yang; Achim Leubner; Rajinikanth Pandurangan; Rich Bono; Mahesh Rajashekhara
> Subject: [PATCH 2/7] aacraid: IOCTL pass-through command fix
> 
> The Linux aacriad driver fails to detect the case of SG list count=0 on IOCTL pass-through command and cause intermittent fault.
> The result is the Linux aacriad driver send down IOCTL pass-through command with one not initialized SG list to firmware when receiving SG list count =0 on pass-through command.
> 
> Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>

Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
diff mbox

Patch

diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index fbcd48d..54195a1 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -689,7 +689,10 @@  static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 			kfree (usg);
 		}
 		srbcmd->count = cpu_to_le32(byte_count);
-		psg->count = cpu_to_le32(sg_indx+1);
+		if (user_srbcmd->sg.count)
+			psg->count = cpu_to_le32(sg_indx+1);
+		else
+			psg->count = 0;
 		status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
 	} else {
 		struct user_sgmap* upsg = &user_srbcmd->sg; @@ -775,7 +778,10 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)