From: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
To: Andrew Morton <akpm@linux-foundation.org>,
Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: linux-kernel@vger.kernel.org,
"Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
Subject: [PATCH v2 1/2] vsprintf: Only export no_hash_pointers to test module
Date: Mon, 04 May 2026 12:43:40 +0200 [thread overview]
Message-ID: <20260504-restricted-pointers-kunit-test-v2-1-19e8b1c0fbeb@linutronix.de> (raw)
In-Reply-To: <20260504-restricted-pointers-kunit-test-v2-0-19e8b1c0fbeb@linutronix.de>
Aside from the printf test module, no module should ever use this symbol.
Suggested-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/all/aWpwMyFEfpCNN297@pathway.suse.cz/
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/all/aW3em-KplLVofU5z@smile.fi.intel.com/
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
lib/vsprintf.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 9f359b31c8d1..f70d240a394c 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -59,7 +59,9 @@
/* Disable pointer hashing if requested */
bool no_hash_pointers __ro_after_init;
-EXPORT_SYMBOL_GPL(no_hash_pointers);
+#if IS_MODULE(CONFIG_PRINTF_KUNIT_TEST)
+EXPORT_SYMBOL_FOR_MODULES(no_hash_pointers, "printf_kunit");
+#endif
/*
* Hashed pointers policy selected by "hash_pointers=..." boot param
--
2.53.0
next prev parent reply other threads:[~2026-05-04 10:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-04 10:43 [PATCH v2 0/2] vsprintf: Add test for restricted kernel pointers Thomas Weißschuh
2026-05-04 10:43 ` Thomas Weißschuh [this message]
2026-05-04 10:57 ` [PATCH v2 1/2] vsprintf: Only export no_hash_pointers to test module Andy Shevchenko
2026-05-04 11:53 ` Thomas Weißschuh
2026-05-04 14:11 ` Andy Shevchenko
2026-05-04 10:43 ` [PATCH v2 2/2] vsprintf: Add test for restricted kernel pointers Thomas Weißschuh
2026-05-04 10:58 ` Andy Shevchenko
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