Merge tag 'objtool-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fixes from Ingo Molnar:

 - Fix a build error on ia32-x86_64 cross builds

 - Replace locally open coded ALIGN_UP(), ALIGN_UP_POW2()
   and MAX(), which, beyond being duplicates, the
   ALIGN_UP_POW2() is also buggy

 - Fix objtool klp-diff regression caused by a recent
   change to the bug table format

 - Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL build
   failure

* tag 'objtool-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  livepatch/klp-build: Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL
  objtool/klp: Fix bug table handling for __WARN_printf()
  objtool: Replace custom macros in elf.c with shared ones
  objtool: Print bfd_vma as unsigned long long on ia32-x86_64 cross build

4 files changed, 29 insertions, 20 deletions

diff --git a/scripts/livepatch/klp-build b/scripts/livepatch/klp-build
index 882272120c9e..a73515a82272 100755
--- a/scripts/livepatch/klp-build
+++ b/scripts/livepatch/klp-build
@@ -555,13 +555,11 @@ copy_orig_objects() {
 		local file_dir="$(dirname "$file")"
 		local orig_file="$ORIG_DIR/$rel_file"
 		local orig_dir="$(dirname "$orig_file")"
-		local cmd_file="$file_dir/.$(basename "$file").cmd"
 
 		[[ ! -f "$file" ]] && die "missing $(basename "$file") for $_file"
 
 		mkdir -p "$orig_dir"
 		cp -f "$file" "$orig_dir"
-		[[ -e "$cmd_file" ]] && cp -f "$cmd_file" "$orig_dir"
 	done
 	xtrace_restore
 
@@ -740,15 +738,17 @@ build_patch_module() {
 		local orig_dir="$(dirname "$orig_file")"
 		local kmod_file="$KMOD_DIR/$rel_file"
 		local kmod_dir="$(dirname "$kmod_file")"
-		local cmd_file="$orig_dir/.$(basename "$file").cmd"
+		local cmd_file="$kmod_dir/.$(basename "$file").cmd"
 
 		mkdir -p "$kmod_dir"
 		cp -f "$file" "$kmod_dir"
-		[[ -e "$cmd_file" ]] && cp -f "$cmd_file" "$kmod_dir"
 
 		# Tell kbuild this is a prebuilt object
 		cp -f "$file" "${kmod_file}_shipped"
 
+		# Make modpost happy
+		touch "$cmd_file"
+
 		echo -n " $rel_file" >> "$makefile"
 	done
 
diff --git a/tools/objtool/disas.c b/tools/objtool/disas.c
index 2b5059f55e40..26f08d41f2b1 100644
--- a/tools/objtool/disas.c
+++ b/tools/objtool/disas.c
@@ -108,6 +108,8 @@ static int sprint_name(char *str, const char *name, unsigned long offset)
 
 #define DINFO_FPRINTF(dinfo, ...)	\
 	((*(dinfo)->fprintf_func)((dinfo)->stream, __VA_ARGS__))
+#define bfd_vma_fmt			\
+	__builtin_choose_expr(sizeof(bfd_vma) == sizeof(unsigned long), "%#lx <%s>", "%#llx <%s>")
 
 static int disas_result_fprintf(struct disas_context *dctx,
 				const char *fmt, va_list ap)
@@ -170,10 +172,10 @@ static void disas_print_addr_sym(struct section *sec, struct symbol *sym,
 
 	if (sym) {
 		sprint_name(symstr, sym->name, addr - sym->offset);
-		DINFO_FPRINTF(dinfo, "0x%lx <%s>", addr, symstr);
+		DINFO_FPRINTF(dinfo, bfd_vma_fmt, addr, symstr);
 	} else {
 		str = offstr(sec, addr);
-		DINFO_FPRINTF(dinfo, "0x%lx <%s>", addr, str);
+		DINFO_FPRINTF(dinfo, bfd_vma_fmt, addr, str);
 		free(str);
 	}
 }
@@ -252,7 +254,7 @@ static void disas_print_addr_reloc(bfd_vma addr, struct disassemble_info *dinfo)
 		 * example: "lea 0x0(%rip),%rdi". The kernel can reference
 		 * the next IP with _THIS_IP_ macro.
 		 */
-		DINFO_FPRINTF(dinfo, "0x%lx <_THIS_IP_>", addr);
+		DINFO_FPRINTF(dinfo, bfd_vma_fmt, addr, "_THIS_IP_");
 		return;
 	}
 
@@ -264,11 +266,11 @@ static void disas_print_addr_reloc(bfd_vma addr, struct disassemble_info *dinfo)
 	 */
 	if (reloc->sym->type == STT_SECTION) {
 		str = offstr(reloc->sym->sec, reloc->sym->offset + offset);
-		DINFO_FPRINTF(dinfo, "0x%lx <%s>", addr, str);
+		DINFO_FPRINTF(dinfo, bfd_vma_fmt, addr, str);
 		free(str);
 	} else {
 		sprint_name(symstr, reloc->sym->name, offset);
-		DINFO_FPRINTF(dinfo, "0x%lx <%s>", addr, symstr);
+		DINFO_FPRINTF(dinfo, bfd_vma_fmt, addr, symstr);
 	}
 }
 
@@ -311,7 +313,7 @@ static void disas_print_address(bfd_vma addr, struct disassemble_info *dinfo)
 	 */
 	sym = insn_call_dest(insn);
 	if (sym && (sym->offset == addr || (sym->offset == 0 && is_reloc))) {
-		DINFO_FPRINTF(dinfo, "0x%lx <%s>", addr, sym->name);
+		DINFO_FPRINTF(dinfo, bfd_vma_fmt, addr, sym->name);
 		return;
 	}
 
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index 6a8ed9c62323..2c02c7b49265 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -18,15 +18,14 @@
 #include <errno.h>
 #include <libgen.h>
 #include <ctype.h>
+#include <linux/align.h>
+#include <linux/kernel.h>
 #include <linux/interval_tree_generic.h>
+#include <linux/log2.h>
 #include <objtool/builtin.h>
 #include <objtool/elf.h>
 #include <objtool/warn.h>
 
-#define ALIGN_UP(x, align_to) (((x) + ((align_to)-1)) & ~((align_to)-1))
-#define ALIGN_UP_POW2(x) (1U << ((8 * sizeof(x)) - __builtin_clz((x) - 1U)))
-#define MAX(a, b) ((a) > (b) ? (a) : (b))
-
 static inline u32 str_hash(const char *str)
 {
 	return jhash(str, strlen(str), 0);
@@ -1336,7 +1335,7 @@ unsigned int elf_add_string(struct elf *elf, struct section *strtab, const char
 		return -1;
 	}
 
-	offset = ALIGN_UP(strtab->sh.sh_size, strtab->sh.sh_addralign);
+	offset = ALIGN(strtab->sh.sh_size, strtab->sh.sh_addralign);
 
 	if (!elf_add_data(elf, strtab, str, strlen(str) + 1))
 		return -1;
@@ -1378,7 +1377,7 @@ void *elf_add_data(struct elf *elf, struct section *sec, const void *data, size_
 	sec->data->d_size = size;
 	sec->data->d_align = 1;
 
-	offset = ALIGN_UP(sec->sh.sh_size, sec->sh.sh_addralign);
+	offset = ALIGN(sec->sh.sh_size, sec->sh.sh_addralign);
 	sec->sh.sh_size = offset + size;
 
 	mark_sec_changed(elf, sec, true);
@@ -1502,7 +1501,7 @@ static int elf_alloc_reloc(struct elf *elf, struct section *rsec)
 	rsec->data->d_size = nr_relocs_new * elf_rela_size(elf);
 	rsec->sh.sh_size   = rsec->data->d_size;
 
-	nr_alloc = MAX(64, ALIGN_UP_POW2(nr_relocs_new));
+	nr_alloc = max(64UL, roundup_pow_of_two(nr_relocs_new));
 	if (nr_alloc <= rsec->nr_alloc_relocs)
 		return 0;
 
diff --git a/tools/objtool/klp-diff.c b/tools/objtool/klp-diff.c
index 4d1f9e9977eb..d94531e3f64e 100644
--- a/tools/objtool/klp-diff.c
+++ b/tools/objtool/klp-diff.c
@@ -1425,9 +1425,6 @@ static int clone_special_sections(struct elfs *e)
 {
 	struct section *patched_sec;
 
-	if (create_fake_symbols(e->patched))
-		return -1;
-
 	for_each_sec(e->patched, patched_sec) {
 		if (is_special_section(patched_sec)) {
 			if (clone_special_section(e, patched_sec))
@@ -1704,6 +1701,17 @@ int cmd_klp_diff(int argc, const char **argv)
 	if (!e.out)
 		return -1;
 
+	/*
+	 * Special section fake symbols are needed so that individual special
+	 * section entries can be extracted by clone_special_sections().
+	 *
+	 * Note the fake symbols are also needed by clone_included_functions()
+	 * because __WARN_printf() call sites add references to bug table
+	 * entries in the calling functions.
+	 */
+	if (create_fake_symbols(e.patched))
+		return -1;
+
 	if (clone_included_functions(&e))
 		return -1;