From f447ef4a56dee4b68a91460bcdfe06b5011085f2 Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Fri, 11 Oct 2013 08:45:51 -0400 Subject: [PATCH] cpupower: Fix segfault due to incorrect getopt_long arugments If a user calls 'cpupower set --perf-bias 15', the process will end with a SIGSEGV in libc because cpupower-set passes a NULL optarg to the atoi call. This is because the getopt_long structure currently has all of the options as having an optional_argument when they really have a required argument. We change the structure to use required_argument to match the short options and it resolves the issue. This fixes https://bugzilla.redhat.com/show_bug.cgi?id=1000439 Signed-off-by: Josh Boyer Cc: Dominik Brodowski Cc: Thomas Renninger Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- tools/power/cpupower/utils/cpupower-set.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/power/cpupower/utils/cpupower-set.c b/tools/power/cpupower/utils/cpupower-set.c index dc4de3762111..bcf1d2f0b791 100644 --- a/tools/power/cpupower/utils/cpupower-set.c +++ b/tools/power/cpupower/utils/cpupower-set.c @@ -18,9 +18,9 @@ #include "helpers/bitmask.h" static struct option set_opts[] = { - { .name = "perf-bias", .has_arg = optional_argument, .flag = NULL, .val = 'b'}, - { .name = "sched-mc", .has_arg = optional_argument, .flag = NULL, .val = 'm'}, - { .name = "sched-smt", .has_arg = optional_argument, .flag = NULL, .val = 's'}, + { .name = "perf-bias", .has_arg = required_argument, .flag = NULL, .val = 'b'}, + { .name = "sched-mc", .has_arg = required_argument, .flag = NULL, .val = 'm'}, + { .name = "sched-smt", .has_arg = required_argument, .flag = NULL, .val = 's'}, { }, }; -- 2.30.2