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Second round of Kbuild fixes for 7.0

Browse source 
- Split out .modinfo section from ELF_DETAILS macro, as that macro may
   be used in other areas that expect to discard .modinfo, breaking
   certain image layouts
 
 - Adjust genksyms parser to handle optional attributes in certain
   declarations, necessary after commit 07919126ec ("netfilter:
   annotate NAT helper hook pointers with __rcu")
 
 - Include resolve_btfids in external module build created by
   scripts/package/install-extmod-build when it may be run on
   external modules
 
 - Avoid removing objtool binary with 'make clean', as it is required for
   external module builds
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Merge tag 'kbuild-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

Pull Kbuild fixes from Nathan Chancellor:

 - Split out .modinfo section from ELF_DETAILS macro, as that macro may
   be used in other areas that expect to discard .modinfo, breaking
   certain image layouts

 - Adjust genksyms parser to handle optional attributes in certain
   declarations, necessary after commit 07919126ec ("netfilter:
   annotate NAT helper hook pointers with __rcu")

 - Include resolve_btfids in external module build created by
   scripts/package/install-extmod-build when it may be run on external
   modules

 - Avoid removing objtool binary with 'make clean', as it is required
   for external module builds

* tag 'kbuild-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
  kbuild: Leave objtool binary around with 'make clean'
  kbuild: install-extmod-build: Package resolve_btfids if necessary
  genksyms: Fix parsing a declarator with a preceding attribute
  kbuild: Split .modinfo out from ELF_DETAILS
This commit is contained in:
Linus Torvalds 2026-03-06 20:27:13 -08:00
commit 4ae12d8bd9
31 changed files with 44 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

8
Makefile
View file

@ -1497,13 +1497,13 @@ ifneq ($(wildcard $(resolve_btfids_O)),)
$(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(resolve_btfids_O) clean $(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(resolve_btfids_O) clean
endif endif
PHONY += objtool_clean PHONY += objtool_clean objtool_mrproper
objtool_O = $(abspath $(objtree))/tools/objtool objtool_O = $(abspath $(objtree))/tools/objtool
objtool_clean: objtool_clean objtool_mrproper:
ifneq ($(wildcard $(objtool_O)),) ifneq ($(wildcard $(objtool_O)),)
$(Q)$(MAKE) -sC $(abs_srctree)/tools/objtool O=$(objtool_O) srctree=$(abs_srctree) clean $(Q)$(MAKE) -sC $(abs_srctree)/tools/objtool O=$(objtool_O) srctree=$(abs_srctree) $(patsubst objtool_%,%,$@)
endif endif
tools/: FORCE tools/: FORCE
@ -1686,7 +1686,7 @@ PHONY += $(mrproper-dirs) mrproper
$(mrproper-dirs): $(mrproper-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
mrproper: clean $(mrproper-dirs) mrproper: clean objtool_mrproper $(mrproper-dirs)
$(call cmd,rmfiles) $(call cmd,rmfiles)
@find . $(RCS_FIND_IGNORE) \ @find . $(RCS_FIND_IGNORE) \
\( -name '*.rmeta' \) \ \( -name '*.rmeta' \) \

1
arch/alpha/kernel/vmlinux.lds.S
View file

@ -71,6 +71,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

1
arch/arc/kernel/vmlinux.lds.S
View file

@ -123,6 +123,7 @@ SECTIONS
_end = . ; _end = . ;
STABS_DEBUG STABS_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

1
arch/arm/boot/compressed/vmlinux.lds.S
View file

@ -21,6 +21,7 @@ SECTIONS
COMMON_DISCARDS COMMON_DISCARDS
*(.ARM.exidx*) *(.ARM.exidx*)
*(.ARM.extab*) *(.ARM.extab*)
*(.modinfo)
*(.note.*) *(.note.*)
*(.rel.*) *(.rel.*)
*(.printk_index) *(.printk_index)

1
arch/arm/kernel/vmlinux-xip.lds.S
View file

@ -154,6 +154,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ARM_DETAILS ARM_DETAILS
ARM_ASSERTS ARM_ASSERTS

1
arch/arm/kernel/vmlinux.lds.S
View file

@ -153,6 +153,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ARM_DETAILS ARM_DETAILS
ARM_ASSERTS ARM_ASSERTS

1
arch/arm64/kernel/vmlinux.lds.S
View file

@ -349,6 +349,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
HEAD_SYMBOLS HEAD_SYMBOLS

1
arch/csky/kernel/vmlinux.lds.S
View file

@ -109,6 +109,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

1
arch/hexagon/kernel/vmlinux.lds.S
View file

@ -62,6 +62,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
.hexagon.attributes 0 : { *(.hexagon.attributes) } .hexagon.attributes 0 : { *(.hexagon.attributes) }

1
arch/loongarch/kernel/vmlinux.lds.S
View file

@ -147,6 +147,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
#ifdef CONFIG_EFI_STUB #ifdef CONFIG_EFI_STUB

1
arch/m68k/kernel/vmlinux-nommu.lds
View file

@ -85,6 +85,7 @@ SECTIONS {
_end = .; _end = .;
STABS_DEBUG STABS_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
/* Sections to be discarded */ /* Sections to be discarded */

1
arch/m68k/kernel/vmlinux-std.lds
View file

@ -58,6 +58,7 @@ SECTIONS
_end = . ; _end = . ;
STABS_DEBUG STABS_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
/* Sections to be discarded */ /* Sections to be discarded */

1
arch/m68k/kernel/vmlinux-sun3.lds
View file

@ -51,6 +51,7 @@ __init_begin = .;
_end = . ; _end = . ;
STABS_DEBUG STABS_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
/* Sections to be discarded */ /* Sections to be discarded */

1
arch/mips/kernel/vmlinux.lds.S
View file

@ -217,6 +217,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
/* These must appear regardless of . */ /* These must appear regardless of . */

1
arch/nios2/kernel/vmlinux.lds.S
View file

@ -57,6 +57,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

1
arch/openrisc/kernel/vmlinux.lds.S
View file

@ -101,6 +101,7 @@ SECTIONS
/* Throw in the debugging sections */ /* Throw in the debugging sections */
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
/* Sections to be discarded -- must be last */ /* Sections to be discarded -- must be last */

1
arch/parisc/boot/compressed/vmlinux.lds.S
View file

@ -90,6 +90,7 @@ SECTIONS
/* Sections to be discarded */ /* Sections to be discarded */
DISCARDS DISCARDS
/DISCARD/ : { /DISCARD/ : {
*(.modinfo)
#ifdef CONFIG_64BIT #ifdef CONFIG_64BIT
/* temporary hack until binutils is fixed to not emit these /* temporary hack until binutils is fixed to not emit these
* for static binaries * for static binaries

1
arch/parisc/kernel/vmlinux.lds.S
View file

@ -165,6 +165,7 @@ SECTIONS
_end = . ; _end = . ;
STABS_DEBUG STABS_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
.note 0 : { *(.note) } .note 0 : { *(.note) }

1
arch/powerpc/kernel/vmlinux.lds.S
View file

@ -397,6 +397,7 @@ SECTIONS
_end = . ; _end = . ;
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

1
arch/riscv/kernel/vmlinux.lds.S
View file

@ -170,6 +170,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
.riscv.attributes 0 : { *(.riscv.attributes) } .riscv.attributes 0 : { *(.riscv.attributes) }

1
arch/s390/kernel/vmlinux.lds.S
View file

@ -221,6 +221,7 @@ SECTIONS
/* Debugging sections. */ /* Debugging sections. */
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
/* /*

1
arch/sh/kernel/vmlinux.lds.S
View file

@ -89,6 +89,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

1
arch/sparc/kernel/vmlinux.lds.S
View file

@ -191,6 +191,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

1
arch/um/kernel/dyn.lds.S
View file

@ -172,6 +172,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

1
arch/um/kernel/uml.lds.S
View file

@ -113,6 +113,7 @@ SECTIONS
STABS_DEBUG STABS_DEBUG
DWARF_DEBUG DWARF_DEBUG
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

2
arch/x86/boot/compressed/vmlinux.lds.S
View file

@ -88,7 +88,7 @@ SECTIONS
/DISCARD/ : { /DISCARD/ : {
*(.dynamic) *(.dynsym) *(.dynstr) *(.dynbss) *(.dynamic) *(.dynsym) *(.dynstr) *(.dynbss)
*(.hash) *(.gnu.hash) *(.hash) *(.gnu.hash)
*(.note.*) *(.note.*) *(.modinfo)
} }
.got.plt (INFO) : { .got.plt (INFO) : {

1
arch/x86/kernel/vmlinux.lds.S
View file

@ -427,6 +427,7 @@ SECTIONS
.llvm_bb_addr_map : { *(.llvm_bb_addr_map) } .llvm_bb_addr_map : { *(.llvm_bb_addr_map) }
#endif #endif
MODINFO
ELF_DETAILS ELF_DETAILS
DISCARDS DISCARDS

4
include/asm-generic/vmlinux.lds.h
View file

@ -848,12 +848,14 @@
/* Required sections not related to debugging. */ /* Required sections not related to debugging. */
#define ELF_DETAILS \ #define ELF_DETAILS \
.modinfo : { *(.modinfo) . = ALIGN(8); } \
.comment 0 : { *(.comment) } \ .comment 0 : { *(.comment) } \
.symtab 0 : { *(.symtab) } \ .symtab 0 : { *(.symtab) } \
.strtab 0 : { *(.strtab) } \ .strtab 0 : { *(.strtab) } \
.shstrtab 0 : { *(.shstrtab) } .shstrtab 0 : { *(.shstrtab) }
#define MODINFO \
.modinfo : { *(.modinfo) . = ALIGN(8); }
#ifdef CONFIG_GENERIC_BUG #ifdef CONFIG_GENERIC_BUG
#define BUG_TABLE \ #define BUG_TABLE \
. = ALIGN(8); \ . = ALIGN(8); \

4
scripts/genksyms/parse.y
View file

@ -325,8 +325,8 @@ direct_declarator:
{ $$ = $4; } { $$ = $4; }
| direct_declarator BRACKET_PHRASE | direct_declarator BRACKET_PHRASE
{ $$ = $2; } { $$ = $2; }
| '(' declarator ')' | '(' attribute_opt declarator ')'
{ $$ = $3; } { $$ = $4; }
; ;
/* Nested declarators differ from regular declarators in that they do /* Nested declarators differ from regular declarators in that they do

4
scripts/package/install-extmod-build
View file

@ -32,6 +32,10 @@ mkdir -p "${destdir}"
echo tools/objtool/objtool echo tools/objtool/objtool
fi fi
if is_enabled CONFIG_DEBUG_INFO_BTF_MODULES; then
echo tools/bpf/resolve_btfids/resolve_btfids
fi
echo Module.symvers echo Module.symvers
echo "arch/${SRCARCH}/include/generated" echo "arch/${SRCARCH}/include/generated"
echo include/config/auto.conf echo include/config/auto.conf

8
tools/objtool/Makefile
View file

@ -142,13 +142,15 @@ $(LIBSUBCMD)-clean:
$(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT) $(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT)
clean: $(LIBSUBCMD)-clean clean: $(LIBSUBCMD)-clean
$(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL) $(Q)find $(OUTPUT) \( -name '*.o' -o -name '\.*.cmd' -o -name '\.*.d' \) -type f -print | xargs $(RM)
$(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
$(Q)$(RM) $(OUTPUT)arch/x86/lib/cpu-feature-names.c $(OUTPUT)fixdep $(Q)$(RM) $(OUTPUT)arch/x86/lib/cpu-feature-names.c $(OUTPUT)fixdep
$(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep
$(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.objtool $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.objtool
$(Q)$(RM) -r -- $(OUTPUT)feature $(Q)$(RM) -r -- $(OUTPUT)feature
mrproper: clean
$(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
FORCE: FORCE:
.PHONY: clean FORCE .PHONY: clean mrproper FORCE