-stable review patch. If anyone has any objections, please let us know.
------------------
Recent alterations to the gdth_fill_raw_cmd() path no longer set the
sg_ranz field for zero transfer commands. However, this field is used
lower down in the function to initialise ha->cmd_len to the size of
the firmware packet. If this uninitialised field contains a bogus
value, ha->cmd_len can become much larger than the actual firmware
packet and end up oopsing in gdth_copy_cmd() as it tries to copy this
huge packet to the device (usually because it runs into an unallocated
page).
The fix is to initialise the sg_ranz field to zero at the start of
gdth_fill_raw_cmd().
Signed-off-by: Joerg Dorchain <[EMAIL PROTECTED]>
Acked-by: "Achim Leubner" <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: James Bottomley <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/scsi/gdth.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -3092,6 +3092,7 @@ static int gdth_fill_raw_cmd(int hanum,S
cmdp->u.raw64.direction =
gdth_direction_tab[scp->cmnd[0]]==DOU ?
GDTH_DATA_OUT:GDTH_DATA_IN;
memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
+ cmdp->u.raw64.sg_ranz = 0;
} else {
cmdp->u.raw.reserved = 0;
cmdp->u.raw.mdisc_time = 0;
@@ -3108,6 +3109,7 @@ static int gdth_fill_raw_cmd(int hanum,S
cmdp->u.raw.direction =
gdth_direction_tab[scp->cmnd[0]]==DOU ?
GDTH_DATA_OUT:GDTH_DATA_IN;
memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
+ cmdp->u.raw.sg_ranz = 0;
}
if (scp->use_sg) {
--
-
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