On Wed, Oct 16, 2019 at 11:45:49AM -0700, Eric Biggers wrote:
> On Mon, Oct 14, 2019 at 03:09:40PM -0700, Darrick J. Wong wrote:
> > From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> >
> > Andreas Grünbacher reports that on the two filesystems that support
> > iomap directio, it's possible for splice() to return -EAGAIN (instead of
> > a short splice) if the pipe being written to has less space available in
> > its pipe buffers than the length supplied by the calling process.
> >
> > Months ago we fixed splice_direct_to_actor to clamp the length of the
> > read request to the size of the splice pipe. Do the same to do_splice.
> >
> > Fixes: 17614445576b6 ("splice: don't read more than available pipe space")
> > Reported-by: syzbot+3c01db6025f26530cf8d@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> I already invalidated this syzbot report when the previous version of this patch
> was dropped, as that was what the report appeared to be for. So you don't need
> this Reported-by line. It's not a big deal, but including it could mislead
> people into thinking that syzbot found a problem with the commit in the Fixes:
> line, rather than a prior version of this patch.
Ok, will drop for v4. Thanks for taking care of the report.
--D
> - Eric
