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Date:      Wed, 20 Apr 2016 12:08:43 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-fs@FreeBSD.org
Subject:   [Bug 204764] Filesystem deadlock, process in vodead state
Message-ID:  <bug-204764-3630-c2Y64FEAPy@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-204764-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-204764-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D204764

--- Comment #24 from roel@qsp.nl ---
Here it is, for both du processes listed above:

(kgdb) thread 555
(kgdb) frame 4
#4  0xffffffff80bed620 in vnode_create_vobject (vp=3D0xfffff801d3e11b10,
isize=3D16, td=3D0xfffff8033a17e000) at /usr/src/sys/vm/vnode_pager.c:120
120                     VM_OBJECT_SLEEP(object, object, PDROP | PVM, "vodea=
d",
0);
(kgdb) p *vp->v_bufobj.bo_object
$1 =3D {lock =3D {lock_object =3D {lo_name =3D 0xffffffff810062d6 "vm objec=
t", lo_flags
=3D 90374144, lo_data =3D 0, lo_witness =3D 0x0}, rw_lock =3D 1}, object_li=
st =3D
{tqe_next =3D 0xfffff801fd0ea200, tqe_prev =3D 0xfffff801fd0ea020},=20
  shadow_head =3D {lh_first =3D 0x0}, shadow_list =3D {le_next =3D 0x0, le_=
prev =3D
0xfffff8022d69bb38}, memq =3D {tqh_first =3D 0x0, tqh_last =3D 0xfffff801fd=
0ea148},
rtree =3D {rt_root =3D 0, rt_flags =3D 0 '\0'}, size =3D 1, generation =3D =
1,=20
  ref_count =3D 0, shadow_count =3D 0, memattr =3D 6 '\006', type =3D 2 '\0=
02', flags =3D
16392, pg_color =3D 21, paging_in_progress =3D 0, resident_page_count =3D 0,
backing_object =3D 0x0, backing_object_offset =3D 0, pager_object_list =3D {
    tqe_next =3D 0x0, tqe_prev =3D 0x0}, rvq =3D {lh_first =3D 0x0}, cache =
=3D {rt_root =3D
0, rt_flags =3D 0 '\0'}, handle =3D 0xfffff801d3e11b10, un_pager =3D {vnp =
=3D {vnp_size
=3D 16, writemappings =3D 0}, devp =3D {devp_pglist =3D {
        tqh_first =3D 0x10, tqh_last =3D 0x0}, ops =3D 0x0, dev =3D 0x0}, s=
gp =3D
{sgp_pglist =3D {tqh_first =3D 0x10, tqh_last =3D 0x0}}, swp =3D {swp_tmpfs=
 =3D 0x10,
swp_bcount =3D 0}}, cred =3D 0x0, charge =3D 0}
(kgdb) thread 795
[Switching to thread 795 (Thread 101745)]#0  sched_switch
(td=3D0xfffff8006f2e84b0, newtd=3D<value optimized out>, flags=3D<value opt=
imized
out>) at /usr/src/sys/kern/sched_ule.c:1945
1945                    cpuid =3D PCPU_GET(cpuid);
(kgdb) frame 4
#4  0xffffffff80bed620 in vnode_create_vobject (vp=3D0xfffff801d3e11b10,
isize=3D16, td=3D0xfffff8006f2e84b0) at /usr/src/sys/vm/vnode_pager.c:120
120                     VM_OBJECT_SLEEP(object, object, PDROP | PVM, "vodea=
d",
0);
(kgdb) p *vp->v_bufobj.bo_object
$2 =3D {lock =3D {lock_object =3D {lo_name =3D 0xffffffff810062d6 "vm objec=
t", lo_flags
=3D 90374144, lo_data =3D 0, lo_witness =3D 0x0}, rw_lock =3D 1}, object_li=
st =3D
{tqe_next =3D 0xfffff801fd0ea200, tqe_prev =3D 0xfffff801fd0ea020},=20
  shadow_head =3D {lh_first =3D 0x0}, shadow_list =3D {le_next =3D 0x0, le_=
prev =3D
0xfffff8022d69bb38}, memq =3D {tqh_first =3D 0x0, tqh_last =3D 0xfffff801fd=
0ea148},
rtree =3D {rt_root =3D 0, rt_flags =3D 0 '\0'}, size =3D 1, generation =3D =
1,=20
  ref_count =3D 0, shadow_count =3D 0, memattr =3D 6 '\006', type =3D 2 '\0=
02', flags =3D
16392, pg_color =3D 21, paging_in_progress =3D 0, resident_page_count =3D 0,
backing_object =3D 0x0, backing_object_offset =3D 0, pager_object_list =3D {
    tqe_next =3D 0x0, tqe_prev =3D 0x0}, rvq =3D {lh_first =3D 0x0}, cache =
=3D {rt_root =3D
0, rt_flags =3D 0 '\0'}, handle =3D 0xfffff801d3e11b10, un_pager =3D {vnp =
=3D {vnp_size
=3D 16, writemappings =3D 0}, devp =3D {devp_pglist =3D {
        tqh_first =3D 0x10, tqh_last =3D 0x0}, ops =3D 0x0, dev =3D 0x0}, s=
gp =3D
{sgp_pglist =3D {tqh_first =3D 0x10, tqh_last =3D 0x0}}, swp =3D {swp_tmpfs=
 =3D 0x10,
swp_bcount =3D 0}}, cred =3D 0x0, charge =3D 0}

--=20
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