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Date: Mon, 3 Oct 2016 21:35:40 +0100
From: Al Viro <viro@ZenIV.linux.org.uk>
To: CAI Qian <caiqian@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Dave Chinner <david@fromorbit.com>,
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Subject: Re: [RFC][CFT] splice_read reworked
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On Mon, Oct 03, 2016 at 04:32:19PM -0400, CAI Qian wrote:
> > It is pretty reproducible so far by just running the trinity from a docker
> > container backed by overlayfs/xfs.
> > 
> > # su - test
> > $ trinity
> Also, AFACIT, this is NOT reproducible on v4.8 mainline, but only with this
> splice_read reworked branch of vfs tree.

I would be very surprised if mainline had somehow managed to trip sanity
checks added in vfs tree ;-)

Is there any way to record the sequence of syscalls leading to that?