From: Naoya Horiguchi Date: Wed, 3 Apr 2019 07:02:14 +0000 (+0900) Subject: tools/power turbostat: fix buffer overrun X-Git-Tag: microblaze-v5.5-rc1~281^2~10 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=eeb71c950bc6eee460f2070643ce137e067b234c;p=linux-2.6-microblaze.git tools/power turbostat: fix buffer overrun 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 Signed-off-by: Len Brown --- diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 2fb5c155289b..f8f4e1c130a6 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -5131,7 +5131,7 @@ 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");