[CRIU] [PATCH] zdtm/poll: don't overwrite errno

[Andrey Vagin]

show_pollfd() overwrites errno and the test fails

20:38:58.876:     4:  0) fd:  5 events  1 revents  0
20:38:58.876:     4:  1) fd:  6 events  1 revents  0
20:38:58.876:     4:     Init: sec           1427315938 nsec 876822
20:38:58.876:     5:    Start: sec           1427315938 nsec 876899
20:39:00.066:     5:  0) fd:  5 events  1 revents  0
20:39:00.066:     5:  1) fd:  6 events  1 revents  0
20:39:00.067:     5: ERR: poll.c:88: Poll-2 returned -1 (events?!) (errno = 13 (Permission denied))

Reported-by: Mr Jenkins
Signed-off-by: Andrey Vagin <avagin at openvz.org>
---
 test/zdtm/live/static/poll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/zdtm/live/static/poll.c b/test/zdtm/live/static/poll.c
index 85f5455..8e06887 100644
--- a/test/zdtm/live/static/poll.c
+++ b/test/zdtm/live/static/poll.c
@@ -83,8 +83,8 @@ int main(int argc, char *argv[])
 		delta = 5;
 		while (test_go()) {
 			ret = poll(ufds, 2, delta * 1000);
-			show_pollfd(ufds, 2);
 			if (ret && errno != EINTR) {
+				show_pollfd(ufds, 2);
 				err("Poll-2 returned %d (events?!)", ret);
 				exit(1);
 			}
-- 
2.1.0