The global variable multipath_conf is modified through RCU. Hence
avoid that the data race detection tools Helgrind and DRD report
data races for this variable.
The global variable running_state is read without holding the mutex
that protects changes of this variable. Suppress complaints about
these reads.
The global variable uxsock_timeout is not protected by any mutex.
Suppress complaints about using this variable.
This patch introduces a new build-time requirement, namely that
the valgrind-devel package has been installed.
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
---
multipathd/main.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/multipathd/main.c b/multipathd/main.c
index 1d73b4c..54abfef 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -23,6 +23,7 @@
#endif
#include <semaphore.h>
#include <time.h>
+#include <valgrind/helgrind.h>
/*
* libcheckers
@@ -2520,6 +2521,13 @@ main (int argc, char *argv[])
int foreground = 0;
struct config *conf;
+ ANNOTATE_BENIGN_RACE_SIZED(&multipath_conf, sizeof(multipath_conf),
+ "Manipulated through RCU");
+ ANNOTATE_BENIGN_RACE_SIZED(&running_state, sizeof(running_state),
+ "Suppress complaints about unprotected running_state reads");
+ ANNOTATE_BENIGN_RACE_SIZED(&uxsock_timeout, sizeof(uxsock_timeout),
+ "Suppress complaints about this scalar variable");
+
logsink = 1;
if (getuid() != 0) {
--
2.9.2
--
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