D20864.diff
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	Index: head/sys/compat/linux/linux_mmap.h
	===================================================================
	--- head/sys/compat/linux/linux_mmap.h
	+++ head/sys/compat/linux/linux_mmap.h
	@@ -41,6 +41,8 @@
	#define LINUX_MAP_ANON 0x0020
	#define LINUX_MAP_GROWSDOWN 0x0100

	+#define LINUX_PROT_GROWSDOWN 0x01000000
	+#define LINUX_PROT_GROWSUP 0x02000000

	int linux_mmap_common(struct thread *, uintptr_t, size_t, int, int,
	int, off_t);
	Index: head/sys/compat/linux/linux_mmap.c
	===================================================================
	--- head/sys/compat/linux/linux_mmap.c
	+++ head/sys/compat/linux/linux_mmap.c
	@@ -228,6 +228,11 @@
	linux_mprotect_common(struct thread *td, uintptr_t addr, size_t len, int prot)
	{

	+ /* XXX Ignore PROT_GROWSDOWN and PROT_GROWSUP for now. */
	+ prot &= ~(LINUX_PROT_GROWSDOWN \| LINUX_PROT_GROWSUP);
	+ if ((prot & ~(PROT_READ \| PROT_WRITE \| PROT_EXEC)) != 0)
	+ return (EINVAL);
	+
	#if defined(__amd64__)
	linux_fixup_prot(td, &prot);
	#endif