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scsi: libfc: Fix array index out of bound exception

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[ Upstream commit b27c4577557045f1ab3cdfeabfc7f3cd24aca1fe ]

Fix array index out of bound exception in fc_rport_prli_resp().

Link: https://lore.kernel.org/r/20210615165939.24327-1-jhasan@marvell.com
Signed-off-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Javed Hasan 2021-06-15 09:59:39 -07:00 committed by Greg Kroah-Hartman
parent 0d7596a954
commit a4a54c54af
1 changed files with 8 additions and 5 deletions
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13
drivers/scsi/libfc/fc_rport.c
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@ -1162,6 +1162,7 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
resp_code = (pp->spp.spp_flags & FC_SPP_RESP_MASK);
FC_RPORT_DBG(rdata, "PRLI spp_flags = 0x%x spp_type 0x%x\n",
pp->spp.spp_flags, pp->spp.spp_type);
rdata->spp_type = pp->spp.spp_type;
if (resp_code != FC_SPP_RESP_ACK) {
if (resp_code == FC_SPP_RESP_CONF)
@ -1184,11 +1185,13 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
/*
* Call prli provider if we should act as a target
*/
prov = fc_passive_prov[rdata->spp_type];
if (prov) {
memset(&temp_spp, 0, sizeof(temp_spp));
prov->prli(rdata, pp->prli.prli_spp_len,
&pp->spp, &temp_spp);
if (rdata->spp_type < FC_FC4_PROV_SIZE) {
prov = fc_passive_prov[rdata->spp_type];
if (prov) {
memset(&temp_spp, 0, sizeof(temp_spp));
prov->prli(rdata, pp->prli.prli_spp_len,
&pp->spp, &temp_spp);
}
}
/*
* Check if the image pair could be established