@@ -681,7 +681,7 @@ static ssize_t mlxbf_counter_read(struct kobject *ko,
} else
return -EINVAL;
- return sprintf(buf, "0x%llx\n", value);
+ return snprintf(buf, PAGE_SIZE, "0x%llx\n", value);
}
/* Store function for "counter" sysfs files */
@@ -758,7 +758,7 @@ static ssize_t mlxbf_event_find(struct kobject *ko,
evt_name = mlxbf_pmc_get_event_name((char *)ko->name, evt_num);
- return sprintf(buf, "0x%llx: %s\n", evt_num, evt_name);
+ return snprintf(buf, PAGE_SIZE, "0x%llx: %s\n", evt_num, evt_name);
}
/* Store function for "event" sysfs files */
@@ -811,9 +811,12 @@ static ssize_t mlxbf_print_event_list(struct kobject *ko,
buf[0] = '\0';
while (events[i].evt_name != NULL) {
- size += sprintf(e_info, "%x: %s\n", events[i].evt_num,
- events[i].evt_name);
- if (size > PAGE_SIZE)
+ size += snprintf(e_info,
+ sizeof(e_info),
+ "%x: %s\n",
+ events[i].evt_num,
+ events[i].evt_name);
+ if (size >= PAGE_SIZE)
break;
strcat(buf, e_info);
ret = size;
@@ -840,7 +843,7 @@ static ssize_t mlxbf_show_counter_state(struct kobject *ko,
value = FIELD_GET(MLXBF_L3C_PERF_CNT_CFG__EN, perfcnt_cfg);
- return sprintf(buf, "%d\n", value);
+ return snprintf(buf, PAGE_SIZE, "%d\n", value);
}
/* Store function for "enable" sysfs files - only for l3cache */
@@ -1250,4 +1253,4 @@ module_platform_driver(pmc_driver);
MODULE_AUTHOR("Mellanox Technologies");
MODULE_DESCRIPTION("Mellanox PMC driver");
MODULE_LICENSE("Dual BSD/GPL");
-MODULE_VERSION(__stringify(DRIVER_VERSION));
\ No newline at end of file
+MODULE_VERSION(__stringify(DRIVER_VERSION));
BugLink: https://bugs.launchpad.net/bugs/1959119 Replace sprintf with snprintf containing a defined boundary of PAGE_SIZE for sysfs store/show functions and max array size defined otherwise. Signed-off-by: Jitendra Lanka <jlanka@nvidia.com> --- drivers/platform/mellanox/mlxbf-pmc.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-)