Messages in this thread | | | Date | Wed, 12 Sep 2018 23:57:59 +0200 | From | Greg KH <> | Subject | Re: [PATCH] uio: fix is_source param for check_copy_size() in copy_to_iter_mcsafe() |
| |
On Wed, Sep 12, 2018 at 02:51:53PM -0700, Dan Williams wrote: > On Wed, Sep 12, 2018 at 12:48 AM, Greg KH <gregkh@linuxfoundation.org> wrote: > > On Wed, Sep 05, 2018 at 01:31:40PM -0700, Dave Jiang wrote: > >> copy_to_iter_mcsafe() is passing in the is_source parameter as "false" > >> to check_copy_size(). This is different than what copy_to_iter() does. > >> Also, the addr parameter passed to check_copy_size() is the source so > >> therefore we should be passing in "true" instead. > >> > >> Fixes: 8780356ef630 ("x86/asm/memcpy_mcsafe: Define copy_to_iter_mcsafe()") > >> Cc: Fan Du <fan.du@intel.com> > >> Reported-by: Wenwei Tao <wenwei.tww@alibaba-inc.com> > >> Signed-off-by: Dave Jiang <dave.jiang@intel.com> > >> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> > >> Cc: stable <stable@vger.kernel.org> > >> --- > >> include/linux/uio.h | 2 +- > > > > I am not the maintainer of this file, sorry, please work with the -mm > > developers for this. > > Likely this is get_maintainer.pl's fault: > > $ ./scripts/get_maintainer.pl -f include/linux/uio.h > Greg Kroah-Hartman <gregkh@linuxfoundation.org> (maintainer:USERSPACE I/O (UIO)) > linux-kernel@vger.kernel.org (open list) > > Maybe a MAINTAINERS update like the following is warranted, because I > don't think -mm developers are right either, Al seems to be authority > on iov_iter apis: > > diff --git a/MAINTAINERS b/MAINTAINERS > index d870cb57c887..0018e19b4d8e 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -15344,13 +15344,18 @@ F: arch/x86/um/ > F: fs/hostfs/ > F: fs/hppfs/ > > +USERSPACE ACCESS (uaccess, copy_{to,from}_iter) > +M: Alexander Viro <viro@zeniv.linux.org.uk> > +S: Maintained > +F: include/linux/uio*.h > +F: lib/iov_iter.c > + > USERSPACE I/O (UIO) > M: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > S: Maintained > T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git > F: Documentation/driver-api/uio-howto.rst > F: drivers/uio/ > -F: include/linux/uio*.h
Don't drop that line, uio_driver.h is what it should just say, right?
thanks,
greg k-h
| |