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Date:      Tue, 19 Mar 2019 16:12:56 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 235783] Repeated ZFS-related kernel panic
Message-ID:  <bug-235783-3630-Kj3YYVH1pJ@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-235783-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-235783-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235783

--- Comment #7 from Jurij Kovacic <jurij.kovacic@ocpea.com> ---
Hi Andriy,

Thank you again for the detailed instructions.

The following is what I got after entering "frame 7" and "print *db" as
instructed:=20


(kgdb) frame 7
#7  0xffffffff82299013 in dbuf_destroy (db=3D0xfffff8028de9cae0) at atomic.=
h:79
79              atomic_subtract_32(target, 1);
Current language:  auto; currently minimal
(kgdb) print *db
$1 =3D {db =3D {db_object =3D 52289, db_offset =3D 15868362752, db_size =3D=
 131072,
db_data =3D 0x0}, db_objset =3D 0xfffff8000f30a400, db_dnode_handle =3D 0x0,
db_parent =3D 0xfffff800168d9000,
  db_hash_next =3D 0x0, db_blkid =3D 121066, db_blkptr =3D 0x0, db_level =
=3D 0 '\0',
db_mtx =3D {lock_object =3D {lo_name =3D 0xffffffff823d529f "db->db_mtx", l=
o_flags =3D
577830912, lo_data =3D 0,
      lo_witness =3D 0x0}, sx_lock =3D 1}, db_state =3D DB_EVICTING, db_hol=
ds =3D
{rc_count =3D 0}, db_buf =3D 0x0, db_changed =3D {cv_description =3D 0xffff=
ffff823d52ab
"db->db_changed", cv_waiters =3D 0},
  db_data_pending =3D 0x0, db_last_dirty =3D 0x0, db_link =3D {avl_child =3D
0xfffff8028de9cb90, avl_pcb =3D 18446735289386928809}, db_cache_link =3D {l=
ist_next
=3D 0x0, list_prev =3D 0x0}, db_user =3D 0x0,
  db_user_immediate_evict =3D 0 '\0', db_freed_in_flight =3D 0 '\0',
db_pending_evict =3D 0 '\0', db_dirtycnt =3D 0 '\0'}
(kgdb)

Kind regards,
Jurij

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