From: Kees Cook <kees@kernel.org>
To: kernel test robot <lkp@intel.com>
Cc: oe-kbuild-all@lists.linux.dev
Subject: Re: [linux-next:master 6391/9634] include/linux/ucopysize.h:47:25: error: call to '__bad_copy_to' declared with attribute error: copy destination size is too small
Date: Fri, 7 Mar 2025 20:42:09 -0800 [thread overview]
Message-ID: <202503072040.59EF3A390D@keescook> (raw)
In-Reply-To: <202503081120.jyUyb28m-lkp@intel.com>
On Sat, Mar 08, 2025 at 11:39:28AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head: 0a2f889128969dab41861b6e40111aa03dc57014
> commit: 808aac63e2bdf9bae08485e072bf3d317a18acbf [6391/9634] uaccess: Introduce ucopysize.h
> config: i386-buildonly-randconfig-001-20250308 (https://download.01.org/0day-ci/archive/20250308/202503081120.jyUyb28m-lkp@intel.com/config)
> compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250308/202503081120.jyUyb28m-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202503081120.jyUyb28m-lkp@intel.com/
>
> Note: the linux-next/master HEAD 0a2f889128969dab41861b6e40111aa03dc57014 builds fine.
> It may have been fixed somewhere.
>
> All errors (new ones prefixed by >>):
>
> In file included from include/linux/uaccess.h:10,
> from include/linux/sched/task.h:13,
> from include/linux/sched/signal.h:9,
> from include/linux/rcuwait.h:6,
> from include/linux/percpu-rwsem.h:7,
> from include/linux/fs.h:33,
> from drivers/misc/ntsync.c:11:
> In function 'check_copy_size',
> inlined from 'copy_from_user' at include/linux/uaccess.h:207:7,
> inlined from 'setup_wait' at drivers/misc/ntsync.c:890:6:
> >> include/linux/ucopysize.h:47:25: error: call to '__bad_copy_to' declared with attribute error: copy destination size is too small
> 47 | __bad_copy_to();
> | ^~~~~~~~~~~~~~~
It looks like this is an old error that just changed because the name of
the header containing __bad_copy_to changed.
Regardless, I can't reproduce this with GCC 12.3 (Ubuntu). I'm getting a
build image for Debian 12 (GCC 12.2) built to see if there is a
difference...
--
Kees Cook
prev parent reply other threads:[~2025-03-08 4:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-08 3:39 [linux-next:master 6391/9634] include/linux/ucopysize.h:47:25: error: call to '__bad_copy_to' declared with attribute error: copy destination size is too small kernel test robot
2025-03-08 4:42 ` Kees Cook [this message]
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