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From:   Arnd Bergmann <arnd@kernel.org>
To:     Alexander Potapenko <glider@google.com>,
        Andrew Morton <akpm@linux-foundation.org>
Cc:     Arnd Bergmann <arnd@arndb.de>, Marco Elver <elver@google.com>,
        Dmitry Vyukov <dvyukov@google.com>, kasan-dev@googlegroups.com,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH] kmsan: export kmsan_handle_urb
Date:   Thu, 15 Dec 2022 17:26:57 +0100
Message-Id: <20221215162710.3802378-1-arnd@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Arnd Bergmann <arnd@arndb.de>

USB support can be in a loadable module, and this causes a link
failure with KMSAN:

ERROR: modpost: "kmsan_handle_urb" [drivers/usb/core/usbcore.ko] undefined!

Export the symbol so it can be used by this module.

Fixes: 553a80188a5d ("kmsan: handle memory sent to/from USB")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 mm/kmsan/hooks.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/kmsan/hooks.c b/mm/kmsan/hooks.c
index 35f6b6e6a908..3807502766a3 100644
--- a/mm/kmsan/hooks.c
+++ b/mm/kmsan/hooks.c
@@ -260,6 +260,7 @@ void kmsan_handle_urb(const struct urb *urb, bool is_out)
 					       urb->transfer_buffer_length,
 					       /*checked*/ false);
 }
+EXPORT_SYMBOL_GPL(kmsan_handle_urb);
 
 static void kmsan_handle_dma_page(const void *addr, size_t size,
 				  enum dma_data_direction dir)
-- 
2.35.1