From 77846800722914eeba170505c2e7f89e12a6beff Mon Sep 17 00:00:00 2001
From: Ilya Matveychikov <matvejchikov@gmail.com>
Date: Sat, 9 Feb 2019 18:56:17 +0400
Subject: [PATCH] fix the use of syscall result in dl_mmap

---
 ldso/dynlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ldso/dynlink.c b/ldso/dynlink.c
index 206427fe..7cb66db9 100644
--- a/ldso/dynlink.c
+++ b/ldso/dynlink.c
@@ -920,7 +920,7 @@ static void *dl_mmap(size_t n)
 #else
 	p = (void *)__syscall(SYS_mmap, 0, n, prot, flags, -1, 0);
 #endif
-	return p == MAP_FAILED ? 0 : p;
+	return (unsigned long)p > -4096UL ? 0 : p;
 }
 
 static void makefuncdescs(struct dso *p)
-- 
2.25.1