[Bug 259071] Read past EoF in NFS client and fusefs

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 30 Oct 2021 22:40:38 UTC

--- Comment #8 from Rick Macklem <rmacklem@FreeBSD.org> ---
Just fyi, I just ran the demo/test program on a stable/12
kernel and it did not fail.
- The bug fixed by 2nd attachment has been in the NFS client
  code for decades.
--> I suspect a post-stable/12 change to the name cache exposed
    the failure. (If the Lookups hit the name cache, there won't be
    Lookup RPCs to race against the Setattr-of-size.)

The fix probably should be MFC'd to stable/12, but won't make it
in 12.3.

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