Patch "objtool: Fix 32-bit build" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

objtool: Fix 32-bit build

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
objtool-fix-32-bit-build.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Josh Poimboeuf <[email protected]>
Date: Tue, 6 Mar 2018 17:58:15 -0600
Subject: objtool: Fix 32-bit build

From: Josh Poimboeuf <[email protected]>

commit 63474dc4ac7ed3848a4786b9592dd061901f606d upstream.

Fix the objtool build when cross-compiling a 64-bit kernel on a 32-bit host. This also simplifies read_retpoline_hints() a bit and makes its implementation similar to most of the other annotation reading functions.

---
 tools/objtool/check.c |   27 +++++++--------------------
 1 file changed, 7 insertions(+), 20 deletions(-)

@@ -1115,42 +1115,29 @@ static int read_unwind_hints(struct objt
 
 static int read_retpoline_hints(struct objtool_file *file)
 {
-	struct section *sec, *relasec;
+	struct section *sec;
 	struct instruction *insn;
 	struct rela *rela;
-	int i;
 
-	sec = find_section_by_name(file->elf, ".discard.retpoline_safe");
+	sec = find_section_by_name(file->elf, ".rela.discard.retpoline_safe");
 	if (!sec)
 		return 0;
 
-	relasec = sec->rela;
-	if (!relasec) {
-		WARN("missing .rela.discard.retpoline_safe section");
-		return -1;
-	}
-
-	if (sec->len % sizeof(unsigned long)) {
-		WARN("retpoline_safe size mismatch: %d %ld", sec->len, sizeof(unsigned long));
-		return -1;
-	}
-
-	for (i = 0; i < sec->len / sizeof(unsigned long); i++) {
-		rela = find_rela_by_dest(sec, i * sizeof(unsigned long));
-		if (!rela) {
-			WARN("can't find rela for retpoline_safe[%d]", i);
+	list_for_each_entry(rela, &sec->rela_list, list) {
+		if (rela->sym->type != STT_SECTION) {
+			WARN("unexpected relocation symbol type in %s", sec->name);
 			return -1;
 		}
 
 		insn = find_insn(file, rela->sym->sec, rela->addend);
 		if (!insn) {
-			WARN("can't find insn for retpoline_safe[%d]", i);
+			WARN("bad .discard.retpoline_safe entry");
 			return -1;
 		}
 
 		if (insn->type != INSN_JUMP_DYNAMIC &&
 		    insn->type != INSN_CALL_DYNAMIC) {
-			WARN_FUNC("retpoline_safe hint not a indirect jump/call",
+			WARN_FUNC("retpoline_safe hint not an indirect jump/call",
 				  insn->sec, insn->offset);
 			return -1;
 		}

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/x86-kprobes-fix-kernel-crash-when-probing-.entry_trampoline-code.patch queue-4.14/objtool-fix-32-bit-build.patch queue-4.14/x86-boot-objtool-annotate-indirect-jump-in-secondary_startup_64.patch queue-4.14/objtool-add-module-specific-retpoline-rules.patch queue-4.14/x86-ldt-avoid-warning-in-32-bit-builds-with-older-gcc.patch queue-4.14/x86-entry-reduce-the-code-footprint-of-the-idtentry-macro.patch queue-4.14/objtool-retpolines-integrate-objtool-with-retpoline-support-more-closely.patch queue-4.14/nospec-include-asm-barrier.h-dependency.patch queue-4.14/x86-mm-remove-stale-comment-about-kmemcheck.patch queue-4.14/objtool-add-retpoline-validation.patch queue-4.14/x86-mm-sme-objtool-annotate-indirect-call-in-sme_encrypt_execute.patch queue-4.14/x86-asm-improve-how-gen_-_suffixed_rmwcc-specify-clobbers.patch queue-4.14/x86-64-realmode-add-instruction-suffix.patch queue-4.14/objtool-fix-another-switch-table-detection-issue.patch queue-4.14/x86-speculation-objtool-annotate-indirect-calls-jumps-for-objtool.patch queue-4.14/x86-paravirt-objtool-annotate-indirect-calls.patch queue-4.14/objtool-use-existing-global-variables-for-options.patch queue-4.14/x86-entry-64-use-xorl-for-faster-register-clearing.patch queue-4.14/nospec-kill-array_index_nospec_mask_check.patch