From e8ba53d0023a76ba0f50e6ee3e6288c5442f9d33 Mon Sep 17 00:00:00 2001 From: Stephen Smalley Date: Thu, 10 Sep 2020 10:28:05 -0400 Subject: selinux: access policycaps with READ_ONCE/WRITE_ONCE Use READ_ONCE/WRITE_ONCE for all accesses to the selinux_state.policycaps booleans to prevent compiler mischief. Signed-off-by: Stephen Smalley Signed-off-by: Paul Moore --- security/selinux/ss/services.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'security/selinux/ss/services.c') diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 8dc111fbe23a..9704c8a32303 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -2123,7 +2123,8 @@ static void security_load_policycaps(struct selinux_state *state, p = &policy->policydb; for (i = 0; i < ARRAY_SIZE(state->policycap); i++) - state->policycap[i] = ebitmap_get_bit(&p->policycaps, i); + WRITE_ONCE(state->policycap[i], + ebitmap_get_bit(&p->policycaps, i)); for (i = 0; i < ARRAY_SIZE(selinux_policycap_names); i++) pr_info("SELinux: policy capability %s=%d\n", -- cgit v1.2.3-59-g8ed1b