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Message-ID: <Z5esLBCF8N3lVRRs@gmail.com>
Date: Mon, 27 Jan 2025 16:54:20 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Ard Biesheuvel <ardb@...nel.org>, linux-kernel@...r.kernel.org,
the arch/x86 maintainers <x86@...nel.org>,
David Woodhouse <dwmw2@...radead.org>,
Peter Zijlstra <peterz@...radead.org>,
"H. Peter Anvin" <hpa@...or.com>
Subject: [GIT PULL] x86 fix
Linus,
Please pull the latest x86/urgent Git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-2025-01-27
# HEAD: fb1102a09a3b6710ac1e033690f0283696dc94dc Revert "x86/boot: Reject absolute references in .head.text"
Fix a build regression on certain config and build environment
combinations that generate absolute references to symbols.
Thanks,
Ingo
------------------>
Ingo Molnar (1):
Revert "x86/boot: Reject absolute references in .head.text"
arch/x86/tools/relocs.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index e937be979ec8..27441e5863b2 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -841,10 +841,10 @@ static int is_percpu_sym(ElfW(Sym) *sym, const char *symname)
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;
@@ -900,12 +900,6 @@ 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
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