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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2021-03-04 17:31:49 -0800
committerHans de Goede <hdegoede@redhat.com>2021-04-07 19:47:22 +0200
commit2e70b710f36c80b6e78cf32a5c30b46dbb72213c (patch)
tree4b629c64436fd28cfc69634bc18f839afa2dd1aa /tools/power
parent5e3f5973c8dfd2b80268f1825ed2f2ddf81d3267 (diff)
tools/power/x86/intel-speed-select: Increase string size
The current string size to print cpulist can accommodate upto 80 logical CPUs per package. But this limit is not enough. So increase the string size. Also prevent buffer overflow, if the string size reaches limit. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'tools/power')
-rw-r--r--tools/power/x86/intel-speed-select/isst-display.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/tools/power/x86/intel-speed-select/isst-display.c b/tools/power/x86/intel-speed-select/isst-display.c
index 8e54ce47648e..3bf1820c0da1 100644
--- a/tools/power/x86/intel-speed-select/isst-display.c
+++ b/tools/power/x86/intel-speed-select/isst-display.c
@@ -25,10 +25,14 @@ static void printcpulist(int str_len, char *str, int mask_size,
index = snprintf(&str[curr_index],
str_len - curr_index, ",");
curr_index += index;
+ if (curr_index >= str_len)
+ break;
}
index = snprintf(&str[curr_index], str_len - curr_index, "%d",
i);
curr_index += index;
+ if (curr_index >= str_len)
+ break;
first = 0;
}
}
@@ -64,10 +68,14 @@ static void printcpumask(int str_len, char *str, int mask_size,
index = snprintf(&str[curr_index], str_len - curr_index, "%08x",
mask[i]);
curr_index += index;
+ if (curr_index >= str_len)
+ break;
if (i) {
strncat(&str[curr_index], ",", str_len - curr_index);
curr_index++;
}
+ if (curr_index >= str_len)
+ break;
}
free(mask);
@@ -185,7 +193,7 @@ static void _isst_pbf_display_information(int cpu, FILE *outf, int level,
int disp_level)
{
char header[256];
- char value[256];
+ char value[512];
snprintf(header, sizeof(header), "speed-select-base-freq-properties");
format_and_print(outf, disp_level, header, NULL);
@@ -349,7 +357,7 @@ void isst_ctdp_display_information(int cpu, FILE *outf, int tdp_level,
struct isst_pkg_ctdp *pkg_dev)
{
char header[256];
- char value[256];
+ char value[512];
static int level;
int i;