From: Daniel <dkozovsk@redhat.com>
Date: Thu, 26 Jul 2018 13:39:12 +0000 (+0200)
Subject: void call of page_size guarantees that sysconf is not called from signal handler
X-Git-Tag: v240~884^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F9726%2Fhead;p=thirdparty%2Fsystemd.git

void call of page_size guarantees that sysconf is not called from signal handler
---

diff --git a/src/basic/sigbus.c b/src/basic/sigbus.c
index 70afba6bcf8..d5254eab9d3 100644
--- a/src/basic/sigbus.c
+++ b/src/basic/sigbus.c
@@ -113,6 +113,10 @@ void sigbus_install(void) {
                 .sa_flags = SA_SIGINFO,
         };
 
+        /* make sure that sysconf() is not called from a signal handler because
+        * it is not guaranteed to be async-signal-safe since POSIX.1-2008 */
+        (void) page_size();
+
         n_installed++;
 
         if (n_installed == 1)