diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2025-08-28 12:22:20 +0200 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-09-03 17:59:56 +0200 |
| commit | 2578560d2259735d7d51364e7991ea92d85fd56c (patch) | |
| tree | a6745528d593f32ff6af288a040d5489b7bee952 /arch/x86/tools | |
| parent | x86/boot: Check startup code for absence of absolute relocations (diff) | |
| download | linux-2578560d2259735d7d51364e7991ea92d85fd56c.tar.gz linux-2578560d2259735d7d51364e7991ea92d85fd56c.zip | |
x86/boot: Revert "Reject absolute references in .head.text"
This reverts commit
faf0ed487415 ("x86/boot: Reject absolute references in .head.text")
The startup code is checked directly for the absence of absolute symbol
references, so checking the .head.text section in the relocs tool is no
longer needed.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250828102202.1849035-41-ardb+git@google.com
Diffstat (limited to 'arch/x86/tools')
| -rw-r--r-- | arch/x86/tools/relocs.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c index 5778bc498415..e5a2b9a912d1 100644 --- a/arch/x86/tools/relocs.c +++ b/arch/x86/tools/relocs.c @@ -740,10 +740,10 @@ static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel, static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym, const char *symname) { - int headtext = !strcmp(sec_name(sec->shdr.sh_info), ".head.text"); unsigned r_type = ELF64_R_TYPE(rel->r_info); ElfW(Addr) offset = rel->r_offset; int shn_abs = (sym->st_shndx == SHN_ABS) && !is_reloc(S_REL, symname); + if (sym->st_shndx == SHN_UNDEF) return 0; @@ -783,12 +783,6 @@ static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym, break; } - if (headtext) { - die("Absolute reference to symbol '%s' not permitted in .head.text\n", - symname); - break; - } - /* * Relocation offsets for 64 bit kernels are output * as 32 bits and sign extended back to 64 bits when |