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authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2019-04-03 10:02:14 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-09-21 08:14:19 +0300
commit318537ab5df99309dc35d20d61fa7d6559288e81 (patch)
tree29c93cae54f5422a390829179464df246e7da416 /tools
parent2099353f7a187ba0eb44cf955c741edfa2b5ab94 (diff)
downloadlinux-318537ab5df99309dc35d20d61fa7d6559288e81.tar.xz
tools/power turbostat: fix buffer overrun
[ Upstream commit eeb71c950bc6eee460f2070643ce137e067b234c ] turbostat could be terminated by general protection fault on some latest hardwares which (for example) support 9 levels of C-states and show 18 "tADDED" lines. That bloats the total output and finally causes buffer overrun. So let's extend the buffer to avoid this. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/power/x86/turbostat/turbostat.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index b4c5d96e54c1..7c2c8e74aa9a 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -3593,7 +3593,7 @@ int initialize_counters(int cpu_id)
void allocate_output_buffer()
{
- output_buffer = calloc(1, (1 + topo.num_cpus) * 1024);
+ output_buffer = calloc(1, (1 + topo.num_cpus) * 2048);
outp = output_buffer;
if (outp == NULL)
err(-1, "calloc output buffer");