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Darrick J. Wong authored
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: 17614445 ("splice: don't read more than available pipe space") Reported-by: syzbot+3c01db6025f26530cf8d@syzkaller.appspotmail.com Reported-by:
Andreas Grünbacher <andreas.gruenbacher@gmail.com> Reviewed-by:
Andreas Grünbacher <andreas.gruenbacher@gmail.com> Signed-off-by:
Darrick J. Wong <darrick.wong@oracle.com>
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