Merge tag 'kbuild-fixes-v6.9' of...

Merge tag 'kbuild-fixes-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Deduplicate Kconfig entries for CONFIG_CXL_PMU

 - Fix unselectable choice entry in MIPS Kconfig, and forbid this
   structure

 - Remove unused include/asm-generic/export.h

 - Fix a NULL pointer dereference bug in modpost

 - Enable -Woverride-init warning consistently with W=1

 - Drop KCSAN flags from *.mod.c files

* tag 'kbuild-fixes-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: Fix typo HEIGTH to HEIGHT
  Documentation/llvm: Note s390 LLVM=1 support with LLVM 18.1.0 and newer
  kbuild: Disable KCSAN for autogenerated *.mod.c intermediaries
  kbuild: make -Woverride-init warnings more consistent
  modpost: do not make find_tosym() return NULL
  export.h: remove include/asm-generic/export.h
  kconfig: do not reparent the menu inside a choice block
  MIPS: move unselectable FIT_IMAGE_FDT_EPM5 out of the "System type" choice
  cxl: remove CONFIG_CXL_PMU entry in drivers/cxl/Kconfig

Documentation/kbuild/llvm.rst

@@ -178,7 +178,7 @@ yet. Bug reports are always welcome at the issue tracker below!
      - ``LLVM=1``
    * - s390
      - Maintained
-     - ``CC=clang``
+     - ``LLVM=1`` (LLVM >= 18.1.0), ``CC=clang`` (LLVM < 18.1.0)
    * - um (User Mode)
      - Maintained
      - ``LLVM=1``

arch/mips/Kconfig

@@ -619,15 +619,6 @@ config MACH_EYEQ5
 
 	bool
 
-config FIT_IMAGE_FDT_EPM5
-	bool "Include FDT for Mobileye EyeQ5 development platforms"
-	depends on MACH_EYEQ5
-	default n
-	help
-	  Enable this to include the FDT for the EyeQ5 development platforms
-	  from Mobileye in the FIT kernel image.
-	  This requires u-boot on the platform.
-
 config MACH_NINTENDO64
 	bool "Nintendo 64 console"
 	select CEVT_R4K
@@ -1011,6 +1002,15 @@ config CAVIUM_OCTEON_SOC
 
 endchoice
 
+config FIT_IMAGE_FDT_EPM5
+	bool "Include FDT for Mobileye EyeQ5 development platforms"
+	depends on MACH_EYEQ5
+	default n
+	help
+	  Enable this to include the FDT for the EyeQ5 development platforms
+	  from Mobileye in the FIT kernel image.
+	  This requires u-boot on the platform.
+
 source "arch/mips/alchemy/Kconfig"
 source "arch/mips/ath25/Kconfig"
 source "arch/mips/ath79/Kconfig"

drivers/cxl/Kconfig

@@ -144,17 +144,4 @@ config CXL_REGION_INVALIDATION_TEST
 	  If unsure, or if this kernel is meant for production environments,
 	  say N.
 
-config CXL_PMU
-	tristate "CXL Performance Monitoring Unit"
-	default CXL_BUS
-	depends on PERF_EVENTS
-	help
-	  Support performance monitoring as defined in CXL rev 3.0
-	  section 13.2: Performance Monitoring. CXL components may have
-	  one or more CXL Performance Monitoring Units (CPMUs).
-
-	  Say 'y/m' to enable a driver that will attach to performance
-	  monitoring units and provide standard perf based interfaces.
-
-	  If unsure say 'm'.
 endif

drivers/gpu/drm/amd/display/dc/dce110/Makefile

@@ -23,7 +23,7 @@
 # Makefile for the 'controller' sub-component of DAL.
 # It provides the control and status of HW CRTC block.
 
-CFLAGS_$(AMDDALPATH)/dc/dce110/dce110_resource.o = $(call cc-disable-warning, override-init)
+CFLAGS_$(AMDDALPATH)/dc/dce110/dce110_resource.o = -Wno-override-init
 
 DCE110 = dce110_timing_generator.o \
 dce110_compressor.o dce110_opp_regamma_v.o \

drivers/gpu/drm/amd/display/dc/dce112/Makefile

@@ -23,7 +23,7 @@
 # Makefile for the 'controller' sub-component of DAL.
 # It provides the control and status of HW CRTC block.
 
-CFLAGS_$(AMDDALPATH)/dc/dce112/dce112_resource.o = $(call cc-disable-warning, override-init)
+CFLAGS_$(AMDDALPATH)/dc/dce112/dce112_resource.o = -Wno-override-init
 
 DCE112 = dce112_compressor.o
 

drivers/gpu/drm/amd/display/dc/dce120/Makefile

@@ -24,7 +24,7 @@
 # It provides the control and status of HW CRTC block.
 
 
-CFLAGS_$(AMDDALPATH)/dc/dce120/dce120_resource.o = $(call cc-disable-warning, override-init)
+CFLAGS_$(AMDDALPATH)/dc/dce120/dce120_resource.o = -Wno-override-init
 
 DCE120 = dce120_timing_generator.o
 

drivers/gpu/drm/amd/display/dc/dce60/Makefile

@@ -23,7 +23,7 @@
 # Makefile for the 'controller' sub-component of DAL.
 # It provides the control and status of HW CRTC block.
 
-CFLAGS_$(AMDDALPATH)/dc/dce60/dce60_resource.o = $(call cc-disable-warning, override-init)
+CFLAGS_$(AMDDALPATH)/dc/dce60/dce60_resource.o = -Wno-override-init
 
 DCE60 = dce60_timing_generator.o dce60_hw_sequencer.o \
 	dce60_resource.o

drivers/gpu/drm/amd/display/dc/dce80/Makefile

@@ -23,7 +23,7 @@
 # Makefile for the 'controller' sub-component of DAL.
 # It provides the control and status of HW CRTC block.
 
-CFLAGS_$(AMDDALPATH)/dc/dce80/dce80_resource.o = $(call cc-disable-warning, override-init)
+CFLAGS_$(AMDDALPATH)/dc/dce80/dce80_resource.o = -Wno-override-init
 
 DCE80 = dce80_timing_generator.o
 

drivers/gpu/drm/i915/Makefile

@@ -33,9 +33,9 @@ endif
 subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
 
 # Fine grained warnings disable
-CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init)
-CFLAGS_display/intel_display_device.o = $(call cc-disable-warning, override-init)
-CFLAGS_display/intel_fbdev.o = $(call cc-disable-warning, override-init)
+CFLAGS_i915_pci.o = -Wno-override-init
+CFLAGS_display/intel_display_device.o = -Wno-override-init
+CFLAGS_display/intel_fbdev.o = -Wno-override-init
 
 # Support compiling the display code separately for both i915 and xe
 # drivers. Define I915 when building i915.

drivers/gpu/drm/xe/Makefile

@@ -172,8 +172,8 @@ subdir-ccflags-$(CONFIG_DRM_XE_DISPLAY) += \
 	-Ddrm_i915_gem_object=xe_bo \
 	-Ddrm_i915_private=xe_device
 
-CFLAGS_i915-display/intel_fbdev.o = $(call cc-disable-warning, override-init)
-CFLAGS_i915-display/intel_display_device.o = $(call cc-disable-warning, override-init)
+CFLAGS_i915-display/intel_fbdev.o = -Wno-override-init
+CFLAGS_i915-display/intel_display_device.o = -Wno-override-init
 
 # Rule to build SOC code shared with i915
 $(obj)/i915-soc/%.o: $(srctree)/drivers/gpu/drm/i915/soc/%.c FORCE

drivers/net/ethernet/renesas/sh_eth.c

@@ -50,7 +50,7 @@
  * the macros available to do this only define GCC 8.
  */
 __diag_push();
-__diag_ignore(GCC, 8, "-Woverride-init",
+__diag_ignore_all("-Woverride-init",
 	      "logic to initialize all and then override some is OK");
 static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
 	SH_ETH_OFFSET_DEFAULTS,

drivers/pinctrl/aspeed/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
 # Aspeed pinctrl support
 
-ccflags-y += $(call cc-option,-Woverride-init)
+ccflags-y += -Woverride-init
 obj-$(CONFIG_PINCTRL_ASPEED)	+= pinctrl-aspeed.o pinmux-aspeed.o
 obj-$(CONFIG_PINCTRL_ASPEED_G4)	+= pinctrl-aspeed-g4.o
 obj-$(CONFIG_PINCTRL_ASPEED_G5)	+= pinctrl-aspeed-g5.o

fs/proc/Makefile

@@ -5,7 +5,7 @@
 
 obj-y   += proc.o
 
-CFLAGS_task_mmu.o	+= $(call cc-option,-Wno-override-init,)
+CFLAGS_task_mmu.o	+= -Wno-override-init
 proc-y			:= nommu.o task_nommu.o
 proc-$(CONFIG_MMU)	:= task_mmu.o
 

include/asm-generic/export.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-#ifndef __ASM_GENERIC_EXPORT_H
-#define __ASM_GENERIC_EXPORT_H
-
-/*
- * <asm/export.h> and <asm-generic/export.h> are deprecated.
- * Please include <linux/export.h> directly.
- */
-#include <linux/export.h>
-
-#endif

kernel/bpf/Makefile

@@ -4,7 +4,7 @@ ifneq ($(CONFIG_BPF_JIT_ALWAYS_ON),y)
 # ___bpf_prog_run() needs GCSE disabled on x86; see 3193c0836f203 for details
 cflags-nogcse-$(CONFIG_X86)$(CONFIG_CC_IS_GCC) := -fno-gcse
 endif
-CFLAGS_core.o += $(call cc-disable-warning, override-init) $(cflags-nogcse-yy)
+CFLAGS_core.o += -Wno-override-init $(cflags-nogcse-yy)
 
 obj-$(CONFIG_BPF_SYSCALL) += syscall.o verifier.o inode.o helpers.o tnum.o log.o token.o
 obj-$(CONFIG_BPF_SYSCALL) += bpf_iter.o map_iter.o task_iter.o prog_iter.o link_iter.o

mm/Makefile

@@ -29,8 +29,7 @@ KCOV_INSTRUMENT_mmzone.o := n
 KCOV_INSTRUMENT_vmstat.o := n
 KCOV_INSTRUMENT_failslab.o := n
 
-CFLAGS_init-mm.o += $(call cc-disable-warning, override-init)
-CFLAGS_init-mm.o += $(call cc-disable-warning, initializer-overrides)
+CFLAGS_init-mm.o += -Wno-override-init
 
 mmu-y			:= nommu.o
 mmu-$(CONFIG_MMU)	:= highmem.o memory.o mincore.o \

scripts/Makefile.extrawarn

@@ -114,6 +114,8 @@ KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
 
+KBUILD_CFLAGS += -Wno-override-init # alias for -Wno-initializer-overrides in clang
+
 ifdef CONFIG_CC_IS_CLANG
 # Clang before clang-16 would warn on default argument promotions.
 ifneq ($(call clang-min-version, 160000),y)
@@ -151,10 +153,6 @@ KBUILD_CFLAGS += -Wtype-limits
 KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
 KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
 
-ifdef CONFIG_CC_IS_CLANG
-KBUILD_CFLAGS += -Winitializer-overrides
-endif
-
 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN2
 
 else
@@ -164,9 +162,7 @@ KBUILD_CFLAGS += -Wno-missing-field-initializers
 KBUILD_CFLAGS += -Wno-type-limits
 KBUILD_CFLAGS += -Wno-shift-negative-value
 
-ifdef CONFIG_CC_IS_CLANG
-KBUILD_CFLAGS += -Wno-initializer-overrides
-else
+ifdef CONFIG_CC_IS_GCC
 KBUILD_CFLAGS += -Wno-maybe-uninitialized
 endif
 

scripts/Makefile.modfinal

@@ -23,7 +23,7 @@ modname = $(notdir $(@:.mod.o=))
 part-of-module = y
 
 quiet_cmd_cc_o_c = CC [M]  $@
-      cmd_cc_o_c = $(CC) $(filter-out $(CC_FLAGS_CFI) $(CFLAGS_GCOV), $(c_flags)) -c -o $@ $<
+      cmd_cc_o_c = $(CC) $(filter-out $(CC_FLAGS_CFI) $(CFLAGS_GCOV) $(CFLAGS_KCSAN), $(c_flags)) -c -o $@ $<
 
 %.mod.o: %.mod.c FORCE
 	$(call if_changed_dep,cc_o_c)

scripts/kconfig/conf.c

@@ -552,11 +552,6 @@ static int conf_choice(struct menu *menu)
 			continue;
 		}
 		sym_set_tristate_value(child->sym, yes);
-		for (child = child->list; child; child = child->next) {
-			indent += 2;
-			conf(child);
-			indent -= 2;
-		}
 		return 1;
 	}
 }

scripts/kconfig/lkc.h

@@ -89,7 +89,7 @@ void menu_add_visibility(struct expr *dep);
 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
-void menu_finalize(struct menu *parent);
+void menu_finalize(void);
 void menu_set_type(int type);
 
 extern struct menu rootmenu;

scripts/kconfig/lxdialog/checklist.c

@@ -119,7 +119,7 @@ int dialog_checklist(const char *title, const char *prompt, int height,
 	}
 
 do_resize:
-	if (getmaxy(stdscr) < (height + CHECKLIST_HEIGTH_MIN))
+	if (getmaxy(stdscr) < (height + CHECKLIST_HEIGHT_MIN))
 		return -ERRDISPLAYTOOSMALL;
 	if (getmaxx(stdscr) < (width + CHECKLIST_WIDTH_MIN))
 		return -ERRDISPLAYTOOSMALL;

scripts/kconfig/lxdialog/dialog.h

@@ -162,17 +162,17 @@ int on_key_esc(WINDOW *win);
 int on_key_resize(void);
 
 /* minimum (re)size values */
-#define CHECKLIST_HEIGTH_MIN 6	/* For dialog_checklist() */
+#define CHECKLIST_HEIGHT_MIN 6	/* For dialog_checklist() */
 #define CHECKLIST_WIDTH_MIN 6
-#define INPUTBOX_HEIGTH_MIN 2	/* For dialog_inputbox() */
+#define INPUTBOX_HEIGHT_MIN 2	/* For dialog_inputbox() */
 #define INPUTBOX_WIDTH_MIN 2
-#define MENUBOX_HEIGTH_MIN 15	/* For dialog_menu() */
+#define MENUBOX_HEIGHT_MIN 15	/* For dialog_menu() */
 #define MENUBOX_WIDTH_MIN 65
-#define TEXTBOX_HEIGTH_MIN 8	/* For dialog_textbox() */
+#define TEXTBOX_HEIGHT_MIN 8	/* For dialog_textbox() */
 #define TEXTBOX_WIDTH_MIN 8
-#define YESNO_HEIGTH_MIN 4	/* For dialog_yesno() */
+#define YESNO_HEIGHT_MIN 4	/* For dialog_yesno() */
 #define YESNO_WIDTH_MIN 4
-#define WINDOW_HEIGTH_MIN 19	/* For init_dialog() */
+#define WINDOW_HEIGHT_MIN 19	/* For init_dialog() */
 #define WINDOW_WIDTH_MIN 80
 
 int init_dialog(const char *backtitle);

scripts/kconfig/lxdialog/inputbox.c

@@ -43,7 +43,7 @@ int dialog_inputbox(const char *title, const char *prompt, int height, int width
 		strcpy(instr, init);
 
 do_resize:
-	if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN))
+	if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGHT_MIN))
 		return -ERRDISPLAYTOOSMALL;
 	if (getmaxx(stdscr) <= (width - INPUTBOX_WIDTH_MIN))
 		return -ERRDISPLAYTOOSMALL;

scripts/kconfig/lxdialog/menubox.c

@@ -172,7 +172,7 @@ int dialog_menu(const char *title, const char *prompt,
 do_resize:
 	height = getmaxy(stdscr);
 	width = getmaxx(stdscr);
-	if (height < MENUBOX_HEIGTH_MIN || width < MENUBOX_WIDTH_MIN)
+	if (height < MENUBOX_HEIGHT_MIN || width < MENUBOX_WIDTH_MIN)
 		return -ERRDISPLAYTOOSMALL;
 
 	height -= 4;

scripts/kconfig/lxdialog/textbox.c

@@ -175,7 +175,7 @@ int dialog_textbox(const char *title, const char *tbuf, int initial_height,
 
 do_resize:
 	getmaxyx(stdscr, height, width);
-	if (height < TEXTBOX_HEIGTH_MIN || width < TEXTBOX_WIDTH_MIN)
+	if (height < TEXTBOX_HEIGHT_MIN || width < TEXTBOX_WIDTH_MIN)
 		return -ERRDISPLAYTOOSMALL;
 	if (initial_height != 0)
 		height = initial_height;

scripts/kconfig/lxdialog/util.c

@@ -291,7 +291,7 @@ int init_dialog(const char *backtitle)
 	getyx(stdscr, saved_y, saved_x);
 
 	getmaxyx(stdscr, height, width);
-	if (height < WINDOW_HEIGTH_MIN || width < WINDOW_WIDTH_MIN) {
+	if (height < WINDOW_HEIGHT_MIN || width < WINDOW_WIDTH_MIN) {
 		endwin();
 		return -ERRDISPLAYTOOSMALL;
 	}

scripts/kconfig/lxdialog/yesno.c

@@ -32,7 +32,7 @@ int dialog_yesno(const char *title, const char *prompt, int height, int width)
 	WINDOW *dialog;
 
 do_resize:
-	if (getmaxy(stdscr) < (height + YESNO_HEIGTH_MIN))
+	if (getmaxy(stdscr) < (height + YESNO_HEIGHT_MIN))
 		return -ERRDISPLAYTOOSMALL;
 	if (getmaxx(stdscr) < (width + YESNO_WIDTH_MIN))
 		return -ERRDISPLAYTOOSMALL;

scripts/kconfig/mconf.c

@@ -659,9 +659,9 @@ static void conf_choice(struct menu *menu)
 		dialog_clear();
 		res = dialog_checklist(prompt ? prompt : "Main Menu",
 					radiolist_instructions,
-					MENUBOX_HEIGTH_MIN,
+					MENUBOX_HEIGHT_MIN,
 					MENUBOX_WIDTH_MIN,
-					CHECKLIST_HEIGTH_MIN);
+					CHECKLIST_HEIGHT_MIN);
 		selected = item_activate_selected();
 		switch (res) {
 		case 0:

scripts/kconfig/menu.c

@@ -282,7 +282,7 @@ static void sym_check_prop(struct symbol *sym)
 	}
 }
 
-void menu_finalize(struct menu *parent)
+static void _menu_finalize(struct menu *parent, bool inside_choice)
 {
 	struct menu *menu, *last_menu;
 	struct symbol *sym;
@@ -296,7 +296,12 @@ void menu_finalize(struct menu *parent)
 		 * and propagate parent dependencies before moving on.
 		 */
 
-		if (sym && sym_is_choice(sym)) {
+		bool is_choice = false;
+
+		if (sym && sym_is_choice(sym))
+			is_choice = true;
+
+		if (is_choice) {
 			if (sym->type == S_UNKNOWN) {
 				/* find the first choice value to find out choice type */
 				current_entry = parent;
@@ -394,7 +399,7 @@ void menu_finalize(struct menu *parent)
 			}
 		}
 
-		if (sym && sym_is_choice(sym))
+		if (is_choice)
 			expr_free(parentdep);
 
 		/*
@@ -402,8 +407,8 @@ void menu_finalize(struct menu *parent)
 		 * moving on
 		 */
 		for (menu = parent->list; menu; menu = menu->next)
-			menu_finalize(menu);
-	} else if (sym) {
+			_menu_finalize(menu, is_choice);
+	} else if (!inside_choice && sym) {
 		/*
 		 * Automatic submenu creation. If sym is a symbol and A, B, C,
 		 * ... are consecutive items (symbols, menus, ifs, etc.) that
@@ -463,7 +468,7 @@ void menu_finalize(struct menu *parent)
 			/* Superset, put in submenu */
 			expr_free(dep2);
 		next:
-			menu_finalize(menu);
+			_menu_finalize(menu, false);
 			menu->parent = parent;
 			last_menu = menu;
 		}
@@ -582,6 +587,11 @@ void menu_finalize(struct menu *parent)
 	}
 }
 
+void menu_finalize(void)
+{
+	_menu_finalize(&rootmenu, false);
+}
+
 bool menu_has_prompt(struct menu *menu)
 {
 	if (!menu->prompt)

scripts/kconfig/parser.y

@@ -515,7 +515,7 @@ void conf_parse(const char *name)
 		menu_add_prompt(P_MENU, "Main menu", NULL);
 	}
 
-	menu_finalize(&rootmenu);
+	menu_finalize();
 
 	menu = &rootmenu;
 	while (menu) {

scripts/mod/modpost.c

@@ -1007,6 +1007,8 @@ static Elf_Sym *find_fromsym(struct elf_info *elf, Elf_Addr addr,
 
 static Elf_Sym *find_tosym(struct elf_info *elf, Elf_Addr addr, Elf_Sym *sym)
 {
+	Elf_Sym *new_sym;
+
 	/* If the supplied symbol has a valid name, return it */
 	if (is_valid_name(elf, sym))
 		return sym;
@@ -1015,8 +1017,9 @@ static Elf_Sym *find_tosym(struct elf_info *elf, Elf_Addr addr, Elf_Sym *sym)
 	 * Strive to find a better symbol name, but the resulting name may not
 	 * match the symbol referenced in the original code.
 	 */
-	return symsearch_find_nearest(elf, addr, get_secindex(elf, sym),
-				      true, 20);
+	new_sym = symsearch_find_nearest(elf, addr, get_secindex(elf, sym),
+					 true, 20);
+	return new_sym ? new_sym : sym;
 }
 
 static bool is_executable_section(struct elf_info *elf, unsigned int secndx)