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.
- Eric
