From: James Smart <jsmart2021@gmail.com>
To: linux-scsi@vger.kernel.org
Cc: James Smart <jsmart2021@gmail.com>,
Dick Kennedy <dick.kennedy@broadcom.com>
Subject: [PATCH 6/8] lpfc: Fix validation of bsg reply lengths
Date: Mon, 3 Aug 2020 14:02:27 -0700 [thread overview]
Message-ID: <20200803210229.23063-7-jsmart2021@gmail.com> (raw)
In-Reply-To: <20200803210229.23063-1-jsmart2021@gmail.com>
There are a couple of code areas which validate sufficient reply buffer
length, but the checks are using the request elements rather than
the reply elements.
Rework to validate using the reply structures.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
---
drivers/scsi/lpfc/lpfc_bsg.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_bsg.c b/drivers/scsi/lpfc/lpfc_bsg.c
index 1d88fedaf3f0..6f9d648a9b9c 100644
--- a/drivers/scsi/lpfc/lpfc_bsg.c
+++ b/drivers/scsi/lpfc/lpfc_bsg.c
@@ -2494,13 +2494,12 @@ lpfc_sli4_bsg_link_diag_test(struct bsg_job *job)
diag_status_reply = (struct diag_status *)
bsg_reply->reply_data.vendor_reply.vendor_rsp;
- if (job->reply_len <
- sizeof(struct fc_bsg_request) + sizeof(struct diag_status)) {
+ if (job->reply_len < sizeof(*bsg_reply) + sizeof(*diag_status_reply)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
"3012 Received Run link diag test reply "
"below minimum size (%d): reply_len:%d\n",
- (int)(sizeof(struct fc_bsg_request) +
- sizeof(struct diag_status)),
+ (int)(sizeof(*bsg_reply) +
+ sizeof(*diag_status_reply)),
job->reply_len);
rc = -EINVAL;
goto job_error;
@@ -3418,8 +3417,7 @@ lpfc_bsg_get_dfc_rev(struct bsg_job *job)
event_reply = (struct get_mgmt_rev_reply *)
bsg_reply->reply_data.vendor_reply.vendor_rsp;
- if (job->reply_len <
- sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
+ if (job->reply_len < sizeof(*bsg_reply) + sizeof(*event_reply)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
"2741 Received GET_DFC_REV reply below "
"minimum size\n");
@@ -5202,8 +5200,8 @@ lpfc_menlo_cmd(struct bsg_job *job)
goto no_dd_data;
}
- if (job->reply_len <
- sizeof(struct fc_bsg_request) + sizeof(struct menlo_response)) {
+ if (job->reply_len < sizeof(*bsg_reply) +
+ sizeof(struct menlo_response)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
"2785 Received MENLO_CMD reply below "
"minimum size\n");
@@ -5359,9 +5357,7 @@ lpfc_forced_link_speed(struct bsg_job *job)
forced_reply = (struct forced_link_speed_support_reply *)
bsg_reply->reply_data.vendor_reply.vendor_rsp;
- if (job->reply_len <
- sizeof(struct fc_bsg_request) +
- sizeof(struct forced_link_speed_support_reply)) {
+ if (job->reply_len < sizeof(*bsg_reply) + sizeof(*forced_reply)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
"0049 Received FORCED_LINK_SPEED reply below "
"minimum size\n");
@@ -5715,8 +5711,7 @@ lpfc_get_trunk_info(struct bsg_job *job)
event_reply = (struct lpfc_trunk_info *)
bsg_reply->reply_data.vendor_reply.vendor_rsp;
- if (job->reply_len <
- sizeof(struct fc_bsg_request) + sizeof(struct lpfc_trunk_info)) {
+ if (job->reply_len < sizeof(*bsg_reply) + sizeof(*event_reply)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
"2728 Received GET TRUNK _INFO reply below "
"minimum size\n");
--
2.26.2
next prev parent reply other threads:[~2020-08-03 21:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-03 21:02 [PATCH 0/8] lpfc: Update lpfc to revision 12.8.0.3 James Smart
2020-08-03 21:02 ` [PATCH 1/8] lpfc: Fix FCoE speed reporting James Smart
2020-08-03 21:02 ` [PATCH 2/8] lpfc: Fix no message shown for lpfc_hdw_queue out of range value James Smart
2020-08-03 21:02 ` [PATCH 3/8] lpfc: Fix RSCN timeout due to incorrect gidft counter James Smart
2020-08-03 21:02 ` [PATCH 4/8] lpfc: Fix oops when unloading driver while running mds diags James Smart
2020-08-03 21:02 ` [PATCH 5/8] lpfc: Fix retry of PRLI when status indicates its unsupported James Smart
2020-08-03 21:02 ` James Smart [this message]
2020-08-03 21:02 ` [PATCH 7/8] lpfc: Fix lun loss after cable pull James Smart
2020-08-03 21:02 ` [PATCH 8/8] lpfc: Update lpfc version to 12.8.0.3 James Smart
2020-08-05 1:17 ` [PATCH 0/8] lpfc: Update lpfc to revision 12.8.0.3 Martin K. Petersen
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