[SCSI] megaraid_sas: fix 64 bit sense pointer truncation
The current sense pointer is cast to a u32 pointer, which can truncate
on 64 bits. Fix by using unsigned long instead.
Signed-off-by Bo Yang<bo.yang@lsi.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index b0d6991..2305672 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -3515,7 +3515,7 @@
int error = 0, i;
void *sense = NULL;
dma_addr_t sense_handle;
- u32 *sense_ptr;
+ unsigned long *sense_ptr;
memset(kbuff_arr, 0, sizeof(kbuff_arr));
@@ -3593,7 +3593,7 @@
}
sense_ptr =
- (u32 *) ((unsigned long)cmd->frame + ioc->sense_off);
+ (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
*sense_ptr = sense_handle;
}
@@ -3624,8 +3624,8 @@
* sense_ptr points to the location that has the user
* sense buffer address
*/
- sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw +
- ioc->sense_off);
+ sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
+ ioc->sense_off);
if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
sense, ioc->sense_len)) {