From 12e44050c93cc88cc03fbfc11b41552e27b1c385 Mon Sep 17 00:00:00 2001
From: Balazs Gerofi <bgerofi@riken.jp>
Date: Mon, 2 Apr 2018 20:12:54 +0900
Subject: [PATCH] mcexec: drop READ_IMPLIES_EXEC from personality to avoid
 device file mapping failure

---
 executer/user/mcexec.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/executer/user/mcexec.c b/executer/user/mcexec.c
index a8fac77c..092e1c7e 100644
--- a/executer/user/mcexec.c
+++ b/executer/user/mcexec.c
@@ -1856,8 +1856,14 @@ int main(int argc, char **argv)
 		altroot = "/usr/linux-k1om-4.7/linux-k1om";
 	}
 
-	/* Disable address space layout randomization */
+	/* Disable READ_IMPLIES_EXEC */
 	persona = personality(0xffffffff);
+	if (persona & READ_IMPLIES_EXEC) {
+		persona &= ~READ_IMPLIES_EXEC;
+		persona = personality(persona);
+	}
+
+	/* Disable address space layout randomization */
 	__dprintf("persona=%08x\n", persona);
 	if ((persona & (PER_LINUX | ADDR_NO_RANDOMIZE)) == 0) {
 		CHKANDJUMP(getenv("MCEXEC_ADDR_NO_RANDOMIZE"), 1, "personality() and then execv() failed\n");