From: Andrew Vasquez <andrew.vasquez@xxxxxxxxxx>
The data in NVRAM is not guaranteed to be NUL terminated.
Since snprintf expects byte-stream to accommodate null byte,
the CHAP secret is truncated.
Use sprintf instead of snprintf to fix the truncation of
CHAP name and secret.
Signed-off-by: Andrew Vasquez <andrew.vasquez@xxxxxxxxxx>
Signed-off-by: Nilesh Javali <nilesh.javali@xxxxxxxxxx>
---
drivers/scsi/qedi/qedi_main.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index 8808f0d..deaed93 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -1842,8 +1842,8 @@ static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
switch (type) {
case ISCSI_BOOT_INI_INITIATOR_NAME:
- rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n",
- initiator->initiator_name.byte);
+ rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
+ initiator->initiator_name.byte);
break;
default:
rc = 0;
@@ -1910,8 +1910,8 @@ static umode_t qedi_ini_get_attr_visibility(void *data, int type)
switch (type) {
case ISCSI_BOOT_TGT_NAME:
- rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n",
- block->target[idx].target_name.byte);
+ rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
+ block->target[idx].target_name.byte);
break;
case ISCSI_BOOT_TGT_IP_ADDR:
if (ipv6_en)
@@ -1932,20 +1932,20 @@ static umode_t qedi_ini_get_attr_visibility(void *data, int type)
block->target[idx].lun.value[0]);
break;
case ISCSI_BOOT_TGT_CHAP_NAME:
- rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n",
- chap_name);
+ rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
+ chap_name);
break;
case ISCSI_BOOT_TGT_CHAP_SECRET:
- rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n",
- chap_secret);
+ rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
+ chap_secret);
break;
case ISCSI_BOOT_TGT_REV_CHAP_NAME:
- rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n",
- mchap_name);
+ rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
+ mchap_name);
break;
case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
- rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n",
- mchap_secret);
+ rc = sprintf(str, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
+ mchap_secret);
break;
case ISCSI_BOOT_TGT_FLAGS:
rc = snprintf(str, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
--
1.8.3.1
