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scsi: atp870u: 64 bit bug in atp885_init() 

On 64 bit CPUs there is a memory corruption bug on probe().  It should
be a u32 pointer instead of an unsigned long pointer or we write past
the end of the setupdata[] array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dan Carpenter 2018-02-14 15:02:31 +03:00 committed by Martin K. Petersen
parent e75fba9c06
commit 29e79e0fa9
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/atp870u.c
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@ -1413,11 +1413,11 @@ static void atp885_init(struct Scsi_Host *shpnt)
atpdev->global_map[m] = 0;
for (k = 0; k < 4; k++) {
atp_writew_base(atpdev, 0x3c, n++);
((unsigned long *)&setupdata[m][0])[k] = atp_readl_base(atpdev, 0x38);
((u32 *)&setupdata[m][0])[k] = atp_readl_base(atpdev, 0x38);
}
for (k = 0; k < 4; k++) {
atp_writew_base(atpdev, 0x3c, n++);
((unsigned long *)&atpdev->sp[m][0])[k] = atp_readl_base(atpdev, 0x38);
((u32 *)&atpdev->sp[m][0])[k] = atp_readl_base(atpdev, 0x38);
}
n += 8;
}