+ kmsan-export-kmsan_handle_urb.patch added to mm-hotfixes-unstable branch

+ kmsan-export-kmsan_handle_urb.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: kmsan: export kmsan_handle_urb
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     kmsan-export-kmsan_handle_urb.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kmsan-export-kmsan_handle_urb.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Arnd Bergmann <arnd@arndb.de>
Subject: kmsan: export kmsan_handle_urb
Date: Thu, 15 Dec 2022 17:26:57 +0100

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.

Link: https://lkml.kernel.org/r/20221215162710.3802378-1-arnd@kernel.org
Fixes: 553a80188a5d ("kmsan: handle memory sent to/from USB")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/kmsan/hooks.c |    1 +
 1 file changed, 1 insertion(+)

--- a/mm/kmsan/hooks.c~kmsan-export-kmsan_handle_urb
+++ a/mm/kmsan/hooks.c
@@ -260,6 +260,7 @@ void kmsan_handle_urb(const struct urb *
 					       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)
_

Patches currently in -mm which might be from arnd@arndb.de are

kmsan-include-linux-vmalloch.patch
kmsan-export-kmsan_handle_urb.patch