linux-kernel - [PATCH] modpost: Make static exports fatal

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Message-Id: <20201124182420.2202514-1-qperret@google.com>
Date:   Tue, 24 Nov 2020 18:24:09 +0000
From:   Quentin Perret <qperret@...gle.com>
To:     Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, kernel-team@...roid.com,
        Quentin Perret <qperret@...gle.com>
Subject: [PATCH] modpost: Make static exports fatal

Using EXPORT_SYMBOL*() on static functions is fundamentally wrong.
Modpost currently reports that as a warning, but clearly this is not a
pattern we should allow, and all in-tree occurences should have been
fixed by now. So, promote the warn() message to fatal() to make sure
this never happens again.

Signed-off-by: Quentin Perret <qperret@...gle.com>
---
 scripts/mod/modpost.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index f882ce0d9327..70b0e825a139 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -2663,9 +2663,9 @@ int main(int argc, char **argv)
 
 		for (s = symbolhash[n]; s; s = s->next) {
 			if (s->is_static)
-				warn("\"%s\" [%s] is a static %s\n",
-				     s->name, s->module->name,
-				     export_str(s->export));
+				fatal("\"%s\" [%s] is a static %s\n",
+				      s->name, s->module->name,
+				      export_str(s->export));
 		}
 	}
 
-- 
2.29.2.454.gaff20da3a2-goog