From a473573964e51dcb6efc182f773cd3924be4a184 Mon Sep 17 00:00:00 2001
From: Suren Baghdasaryan <surenb@google.com>
Date: Thu, 21 Mar 2024 09:36:33 -0700
Subject: lib: code tagging module support
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Add support for code tagging from dynamically loaded modules.

Link: https://lkml.kernel.org/r/20240321163705.3067592-12-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Tested-by: Kees Cook <keescook@chromium.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alex Gaynor <alex.gaynor@gmail.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andreas Hindborg <a.hindborg@samsung.com>
Cc: Benno Lossin <benno.lossin@proton.me>
Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Gary Guo <gary@garyguo.net>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 kernel/module/main.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'kernel/module')

diff --git a/kernel/module/main.c b/kernel/module/main.c
index e1e8a7a9d6c1..ffa6b3e9cb43 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -56,6 +56,7 @@
 #include <linux/dynamic_debug.h>
 #include <linux/audit.h>
 #include <linux/cfi.h>
+#include <linux/codetag.h>
 #include <linux/debugfs.h>
 #include <uapi/linux/module.h>
 #include "internal.h"
@@ -1242,6 +1243,7 @@ static void free_module(struct module *mod)
 {
 	trace_module_free(mod);
 
+	codetag_unload_module(mod);
 	mod_sysfs_teardown(mod);
 
 	/*
@@ -2995,6 +2997,8 @@ static int load_module(struct load_info *info, const char __user *uargs,
 	/* Get rid of temporary copy. */
 	free_copy(info, flags);
 
+	codetag_load_module(mod);
+
 	/* Done! */
 	trace_module_load(mod);
 
-- 
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