From: Ingo Molnar Date: Wed, 12 Mar 2025 11:48:49 +0000 (+0100) Subject: x86/stackprotector/64: Only export __ref_stack_chk_guard on CONFIG_SMP X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=91d5451d97ce35cbd510277fa3b7abf9caa4e34d;p=users%2Fjedix%2Flinux-maple.git x86/stackprotector/64: Only export __ref_stack_chk_guard on CONFIG_SMP The __ref_stack_chk_guard symbol doesn't exist on UP: :4:15: error: ‘__ref_stack_chk_guard’ undeclared here (not in a function) Fix the #ifdef around the entry.S export. Signed-off-by: Ingo Molnar Cc: Brian Gerst Cc: Ard Biesheuvel Cc: Uros Bizjak Link: https://lore.kernel.org/r/20250123190747.745588-8-brgerst@gmail.com --- diff --git a/arch/x86/entry/entry.S b/arch/x86/entry/entry.S index 088f91f76edb..d3caa31240ed 100644 --- a/arch/x86/entry/entry.S +++ b/arch/x86/entry/entry.S @@ -64,6 +64,6 @@ THUNK warn_thunk_thunk, __warn_thunk * entirely in the C code, and use an alias emitted by the linker script * instead. */ -#ifdef CONFIG_STACKPROTECTOR +#if defined(CONFIG_STACKPROTECTOR) && defined(CONFIG_SMP) EXPORT_SYMBOL(__ref_stack_chk_guard); #endif