kern/182181: [ufs] Leakage of vnode references (race condition?)

[Teske, Devin]

On Sep 18, 2013, at 4:00 PM, Oleksandr V. Typlyns'kyi wrote:

> Devin, i think line 1266 in HEAD - it is line 1245 in 8-STABLE:
> http://svnweb.freebsd.org/base/head/sys/ufs/ufs/ufs_vnops.c?annotate=253998#l1266
> http://svnweb.freebsd.org/base/stable/8/sys/ufs/ufs/ufs_vnops.c?annotate=248832#l1245
> http://svnweb.freebsd.org/base/releng/8.4/sys/ufs/ufs/ufs_vnops.c?annotate=248833#l1245
> And it was not MFC'ed

Yes, my confusion was...

1. The PR headers say 8.4-RELEASE-p3 is affected

2. The PR's "How-To-Repeat" starts with "Install a releng/8.4 branch"

Yet...

releng/8.4 and even releng/8.3 both use VOP_UNLOCK instead of vput
(read: are patched).

So I'm very curious, with respect to the PR, how the test program showed
a leak when the claim is that r253998 which fixes this, was in the OP's branch.
-- 
Devin

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