D20687.diff
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	Index: head/sys/amd64/linux/linux_sysvec.c
	===================================================================
	--- head/sys/amd64/linux/linux_sysvec.c
	+++ head/sys/amd64/linux/linux_sysvec.c
	@@ -343,6 +343,12 @@
	*/
	vectp -= imgp->args->argc + 1 + imgp->args->envc + 1;

	+ /*
	+ * Starting with 2.24, glibc depends on a 16-byte stack alignment.
	+ * One "long argc" will be prepended later.
	+ */
	+ vectp = (char **)((((uintptr_t)vectp + 8) & ~0xF) - 8);
	+
	/* vectp also becomes our initial stack base. */
	stack_base = (register_t *)vectp;