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-rw-r--r--extrace.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/extrace.c b/extrace.c
index e3a441a..4848a6f 100644
--- a/extrace.c
+++ b/extrace.c
@@ -140,6 +140,9 @@ pid_depth(pid_t pid)
 	char *s;
 	int fd, d, i;
 
+	if (pid == 1)
+		return 0;
+
 	snprintf(name, sizeof name, "/proc/%d/stat", pid);
 
 	if ((fd = open(name, O_RDONLY)) < 0)