From ed231ae384fdfcb546b63b2fe7add65029e3a94c Mon Sep 17 00:00:00 2001 From: Kim Phillips Date: Tue, 24 Apr 2018 10:39:43 -0500 Subject: [PATCH] arm64/kernel: rename module_emit_adrp_veneer->module_emit_veneer_for_adrp Commit a257e02579e ("arm64/kernel: don't ban ADRP to work around Cortex-A53 erratum #843419") introduced a function whose name ends with "_veneer". This clashes with commit bd8b22d2888e ("Kbuild: kallsyms: ignore veneers emitted by the ARM linker"), which removes symbols ending in "_veneer" from kallsyms. The problem was manifested as 'perf test -vvvvv vmlinux' failed, correctly claiming the symbol 'module_emit_adrp_veneer' was present in vmlinux, but not in kallsyms. ... ERR : 0xffff00000809aa58: module_emit_adrp_veneer not on kallsyms ... test child finished with -1 ---- end ---- vmlinux symtab matches kallsyms: FAILED! Fix the problem by renaming module_emit_adrp_veneer to module_emit_veneer_for_adrp. Now the test passes. Fixes: a257e02579e ("arm64/kernel: don't ban ADRP to work around Cortex-A53 erratum #843419") Acked-by: Ard Biesheuvel Cc: Will Deacon Cc: Catalin Marinas Cc: Michal Marek Signed-off-by: Kim Phillips Signed-off-by: Will Deacon --- arch/arm64/include/asm/module.h | 2 +- arch/arm64/kernel/module-plts.c | 2 +- arch/arm64/kernel/module.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/module.h b/arch/arm64/include/asm/module.h index b6dbbe3123a9..97d0ef12e2ff 100644 --- a/arch/arm64/include/asm/module.h +++ b/arch/arm64/include/asm/module.h @@ -39,7 +39,7 @@ struct mod_arch_specific { u64 module_emit_plt_entry(struct module *mod, void *loc, const Elf64_Rela *rela, Elf64_Sym *sym); -u64 module_emit_adrp_veneer(struct module *mod, void *loc, u64 val); +u64 module_emit_veneer_for_adrp(struct module *mod, void *loc, u64 val); #ifdef CONFIG_RANDOMIZE_BASE extern u64 module_alloc_base; diff --git a/arch/arm64/kernel/module-plts.c b/arch/arm64/kernel/module-plts.c index fa3637284a3d..f0690c2ca3e0 100644 --- a/arch/arm64/kernel/module-plts.c +++ b/arch/arm64/kernel/module-plts.c @@ -43,7 +43,7 @@ u64 module_emit_plt_entry(struct module *mod, void *loc, const Elf64_Rela *rela, } #ifdef CONFIG_ARM64_ERRATUM_843419 -u64 module_emit_adrp_veneer(struct module *mod, void *loc, u64 val) +u64 module_emit_veneer_for_adrp(struct module *mod, void *loc, u64 val) { struct mod_plt_sec *pltsec = !in_init(mod, loc) ? &mod->arch.core : &mod->arch.init; diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c index 719fde8dcc19..155fd91e78f4 100644 --- a/arch/arm64/kernel/module.c +++ b/arch/arm64/kernel/module.c @@ -215,7 +215,7 @@ static int reloc_insn_adrp(struct module *mod, __le32 *place, u64 val) insn &= ~BIT(31); } else { /* out of range for ADR -> emit a veneer */ - val = module_emit_adrp_veneer(mod, place, val & ~0xfff); + val = module_emit_veneer_for_adrp(mod, place, val & ~0xfff); if (!val) return -ENOEXEC; insn = aarch64_insn_gen_branch_imm((u64)place, val, -- 2.20.1