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From e1facb105d21b58caa435cb2bdcef7f7f562eb7c Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Sun, 24 May 2020 19:44:27 -0600
Subject: [PATCH 28/32] spec_ctrl: don't dereference struct module without
CONFIG_MODULE
This structure isn't defined for !CONFIG_MODULE, so don't try to use it.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
arch/x86/kernel/spec_ctrl.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/spec_ctrl.c b/arch/x86/kernel/spec_ctrl.c
index 9b09efcb..6b302522 100644
--- a/arch/x86/kernel/spec_ctrl.c
+++ b/arch/x86/kernel/spec_ctrl.c
@@ -482,9 +482,11 @@ bool spec_ctrl_enable_retpoline_ibrs_user(void)
void spec_ctrl_report_unsafe_module(struct module *mod)
{
+#ifdef CONFIG_MODULE
if (retp_compiler() && !is_skylake_era())
pr_warn_once("WARNING: module '%s' built without retpoline-enabled compiler, may affect Spectre v2 mitigation\n",
mod->name);
+#endif
unsafe_module = true;
}
--
2.27.0
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