fix the use of syscall result in dl_mmap

77846800 · Ilya Matveychikov · Rich Felker · e8e780af · 77846800
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ldso/dynlink.c ldso/dynlink.c +1 -1

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--- 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)