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Subject: [Bug 202607] [panic] Poudriere umounting file systems causes
 'solaris assert: avl_is_empty(&dn->dn_dbufs)' panic
Date: Fri, 11 Sep 2015 22:44:53 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202607

--- Comment #2 from Xin LI <delphij@FreeBSD.org> ---
(In reply to Jason Unovitch from comment #1)
I haven't fix it (*), looking at the code I don't think others have touched the
code either.

But are you running without INVARIANTS?  You would probably not see it if you
are using non-INVARIANT-enabled kernel.

(*) I have an impression that Justin was on it but I could be wrong.

Based on my understanding of Justin's changes, I _think_ that the assertion can
be safely removed, but I am not yet confident enough to commit it.  Currently,
I'm running a kernel from a few days ago, with that assertion removed, but with
a few new assertion instrumented and haven't seen anything weird so far,
however, it seems that my assertion made an unrelated panic go away, which
makes me feel very uncomfortable in committing the change at this time.

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