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Date:      Tue, 06 Jul 2021 06:30:01 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 257012] panic in sys/contrib/openzfs/module/zfs/arc.c arc_release() due to faulty ASSERT
Message-ID:  <bug-257012-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D257012

            Bug ID: 257012
           Summary: panic in sys/contrib/openzfs/module/zfs/arc.c
                    arc_release() due to faulty ASSERT
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: dclarke@blastwave.org

Created attachment 226260
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D226260&action=
=3Dedit
console image after a repeatable panic

Per the discussion in the upstream OpenZFS project :=20

    arc: Drop an incorrect assert=20
    https://github.com/openzfs/zfs/pull/12246

We see the ASSERT(HDR_EMPTY(hdr)) here :=20

=20=20=20
https://github.com/freebsd/freebsd-src/blob/main/sys/contrib/openzfs/module=
/zfs/arc.c#L6531

Trivial to comment that out. Which I did and then the system runs fine
without a strange panic. Otherwise I get a very reliable and even a
repeatable panic. See attached console images.=20


--=20
Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken
GreyBeard and suspenders optional

--=20
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