Reviewed-by: Murthy Bhat <Murthy.Bhat@xxxxxxxx>
-----Original Message-----
From: Mahesh Rajashekhara
Sent: Wednesday, March 04, 2015 2:08 PM
To: JBottomley@xxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx
Cc: aacraid@xxxxxxxxxxxxxx; 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@xxxxxxxx>
---
drivers/scsi/aacraid/commctrl.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
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)
}
}
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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