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scsi: cxgb4i: silence overflow warning in t4_uld_rx_handler() 

Smatch marks skb->data as untrusted so it complains that there is a
potential overflow here:

	drivers/scsi/cxgbi/cxgb4i/cxgb4i.c:2111 t4_uld_rx_handler()
	error: buffer overflow 'cxgb4i_cplhandlers' 239 <= 255.

In this case, skb->data comes from the hardware or firmware so it's not
going to overflow unless there is a firmware bug.

[mkp: fixed braces]

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
hifive-unleashed-5.1
Dan Carpenter 2018-04-03 11:52:22 +03:00 committed by Martin K. Petersen
parent 7709e9bdee
commit ccc495efb3
1 changed files with 4 additions and 4 deletions
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8
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
View File

@ -2108,12 +2108,12 @@ static int t4_uld_rx_handler(void *handle, const __be64 *rsp,
log_debug(1 << CXGBI_DBG_TOE,
"cdev %p, opcode 0x%x(0x%x,0x%x), skb %p.\n",
cdev, opc, rpl->ot.opcode_tid, ntohl(rpl->ot.opcode_tid), skb);
if (cxgb4i_cplhandlers[opc])
cxgb4i_cplhandlers[opc](cdev, skb);
else {
if (opc >= ARRAY_SIZE(cxgb4i_cplhandlers) || !cxgb4i_cplhandlers[opc]) {
pr_err("No handler for opcode 0x%x.\n", opc);
__kfree_skb(skb);
}
} else
cxgb4i_cplhandlers[opc](cdev, skb);
return 0;
nomem:
log_debug(1 << CXGBI_DBG_TOE, "OOM bailing out.\n");