executor: spread overlapping fds

There's a chance that the methods from common_bsd.h and common_linux.h
could dup2 (and thus close) an fd belonging to a kcov instance.

Prevent this by adjusting fd consts.

1 files changed, 1 insertions, 1 deletions

diff --git a/executor/common_bsd.h b/executor/common_bsd.h
index 332e68e5f..7293df993 100644
--- a/executor/common_bsd.h
+++ b/executor/common_bsd.h
@@ -230,7 +230,7 @@ static void initialize_tun(int tun_id)
 	}
 	// Remap tun onto higher fd number to hide it from fuzzer and to keep
 	// fd numbers stable regardless of whether tun is opened or not (also see kMaxFd).
-	const int kTunFd = 240;
+	const int kTunFd = 200;
 	if (dup2(tunfd, kTunFd) < 0)
 		fail("dup2(tunfd, kTunFd) failed");
 	close(tunfd);