D4791.id11949.diff
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	Index: libexec/rtld-elf/rtld.h
	===================================================================
	--- libexec/rtld-elf/rtld.h
	+++ libexec/rtld-elf/rtld.h
	@@ -264,6 +264,7 @@
	bool valid_hash_sysv : 1; /* A valid System V hash hash tag is available */
	bool valid_hash_gnu : 1; /* A valid GNU hash tag is available */
	bool dlopened : 1; /* dlopen()-ed (vs. load statically) */
	+ bool writable_dynamic : 1; /* PT_DYNAMIC is writable */

	struct link_map linkmap; /* For GDB and dlinfo() */
	Objlist dldags; /* Object belongs to these dlopened DAGs (%) */
	Index: libexec/rtld-elf/rtld.c
	===================================================================
	--- libexec/rtld-elf/rtld.c
	+++ libexec/rtld-elf/rtld.c
	@@ -1144,13 +1144,13 @@
	* is mapped read-only. DT_MIPS_RLD_MAP is used instead.
	*/

	-#ifndef __mips__
	case DT_DEBUG:
	+ if (!obj->writable_dynamic)
	+ break;
	if (!early)
	dbg("Filling in DT_DEBUG entry");
	((Elf_Dyn*)dynp)->d_un.d_ptr = (Elf_Addr) &r_debug;
	break;
	-#endif

	case DT_FLAGS:
	if (dynp->d_un.d_val & DF_ORIGIN)
	@@ -1331,6 +1331,8 @@
	break;

	case PT_DYNAMIC:
	+ if (ph->p_flags & PROT_WRITE)
	+ obj->writable_dynamic = 1;
	obj->dynamic = (const Elf_Dyn *)(ph->p_vaddr + obj->relocbase);
	break;