Date: Sat, 26 Jul 2014 12:19:30 +0200 From: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> To: Konstantin Belousov <kostikbel@gmail.com> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: panic/lock on 9.3-RELEASE with nullfs/nfs/zfs combination Message-ID: <53D380B2.2080700@omnilan.de> In-Reply-To: <20140725151448.GY93733@kib.kiev.ua> References: <53D12973.3010805@omnilan.de> <20140724165917.GT93733@kib.kiev.ua> <53D1503B.2030200@omnilan.de> <20140724193048.GU93733@kib.kiev.ua> <53D2006C.7090207@omnilan.de> <20140725151448.GY93733@kib.kiev.ua>
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Bez=C3=BCglich Konstantin Belousov's Nachricht vom 25.07.2014 17:14
(localtime):
> On Fri, Jul 25, 2014 at 08:59:56AM +0200, Harald Schmalzbauer wrote:
>> =E2=80=A6
>> But there's another WITNESS message:
>> WITNESS: unable to allocate a new witness object.
>> Ill ask the relatives what they know about this message (aunt bing,
>> uncle google aso).
> Yes, this is the problem. In sys/kern/subr_witness.c, change the
> #define WITNESS_COUNT from 1024 to e.g. 2048.
Thank you very much, havn't found it myself :-(
FreeBSD/amd64 (mira.inop.mo1.omnilan.net) (ttyu0)
login: shared lock of (lockmgr) zfs @
/usr/local/share/deploy-tools/RELENG_9_3/src/sys/modules/zfs/../../cddl/c=
ontrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:1513
while exclusively locked from
/usr/local/share/deploy-tools/RELENG_9_3/src/sys/modules/zfs/../../cddl/c=
ontrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:1511
panic: share->excl
cpuid =3D 2
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a/frame
0xffffff82e526da80
kdb_backtrace() at kdb_backtrace+0x37/frame 0xffffff82e526db40
panic() at panic+0x1cd/frame 0xffffff82e526dc40
witness_checkorder() at witness_checkorder+0x161/frame 0xffffff82e526dd00=
__lockmgr_args() at __lockmgr_args+0x150a/frame 0xffffff82e526dde0
vop_stdlock() at vop_stdlock+0x39/frame 0xffffff82e526de00
VOP_LOCK1_APV() at VOP_LOCK1_APV+0xe3/frame 0xffffff82e526de30
_vn_lock() at _vn_lock+0x57/frame 0xffffff82e526de90
zfs_lookup() at zfs_lookup+0x420/frame 0xffffff82e526df20
zfs_freebsd_lookup() at zfs_freebsd_lookup+0xa6/frame 0xffffff82e526e070
VOP_CACHEDLOOKUP_APV() at VOP_CACHEDLOOKUP_APV+0x102/frame
0xffffff82e526e0a0
vfs_cache_lookup() at vfs_cache_lookup+0xff/frame 0xffffff82e526e110
VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x102/frame 0xffffff82e526e140
null_lookup() at null_lookup+0x92/frame 0xffffff82e526e1c0
VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x102/frame 0xffffff82e526e1f0
lookup() at lookup+0x32f/frame 0xffffff82e526e290
namei() at namei+0x3df/frame 0xffffff82e526e340
vn_open_cred() at vn_open_cred+0x1e2/frame 0xffffff82e526e4b0
vop_stdvptocnp() at vop_stdvptocnp+0x1af/frame 0xffffff82e526e7e0
null_vptocnp() at null_vptocnp+0xf5/frame 0xffffff82e526e850
VOP_VPTOCNP_APV() at VOP_VPTOCNP_APV+0x105/frame 0xffffff82e526e880
vn_vptocnp_locked() at vn_vptocnp_locked+0x15b/frame 0xffffff82e526e910
vn_fullpath1() at vn_fullpath1+0x100/frame 0xffffff82e526e970
kern___getcwd() at kern___getcwd+0xd4/frame 0xffffff82e526e9d0
amd64_syscall() at amd64_syscall+0x318/frame 0xffffff82e526eaf0
Xfast_syscall() at Xfast_syscall+0xf7/frame 0xffffff82e526eaf0
--- syscall (326, FreeBSD ELF64, sys___getcwd), rip =3D 0x8011a191c, rsp =
=3D
0x7fffffffe658, rbp =3D 0x801873400 ---
KDB: enter: panic
[ thread pid 1668 tid 100854 ]
Stopped at kdb_enter+0x3b: movq $0,0x645622(%rip)
db> show alllocks
Process 1668 (vim) thread 0xfffffe0033498920 (100854)
exclusive lockmgr zfs (zfs) r =3D 0 (0xfffffe001dbc5488) locked @
/usr/local/share/deploy-tools/RELENG_9_3/src/sys/modules/zfs/../../cddl/c=
ontrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:1511
db> show mount
=E2=80=A6
0xfffffe0033a24338
/zfs/netshares/deployment/pub/FreeBSD/OmniLAN/ports/ports on
/.JAILfbsm/usr/ports (nullfs)
=E2=80=A6
db> show mount 0xfffffe0033a24338
0xfffffe0033a24338
/zfs/netshares/deployment/pub/FreeBSD/OmniLAN/ports/ports on
/.JAILfbsm/usr/ports (nullfs)
mnt_flag =3D LOCAL
mnt_kern_flag =3D EXTENDED_SHARED, SHARED_WRITES, LOOKUP_EXCL_DOTDOT,
MPSAFE, LOOKUP_SHARED
mnt_opt =3D rw, fstype, fspath, target, errmsg
mnt_stat =3D { version=3D537068824 type=3D222 flags=3D0x0000000000001000
bsize=3D512 iosize=3D131072 blocks=3D6314029472 bfree=3D6309830941
bavail=3D6309830941 files=3D6310126321 ffree=3D6309830941 syncwrites=3D0
asyncwrites=3D0 syncreads=3D0 asyncreads=3D0 namemax=3D255 owner=3D0
fsid=3D[687931140, 41] }
mnt_cred =3D { uid=3D0 ruid=3D0 }
mnt_ref =3D 24
mnt_gen =3D 1
mnt_nvnodelistsize =3D 24
mnt_activevnodelistsize =3D 5
mnt_writeopcount =3D 0
mnt_maxsymlinklen =3D 0
mnt_iosize_max =3D 65536
mnt_hashseed =3D 279534051
mnt_secondary_writes =3D 0
mnt_secondary_accwrites =3D 0
mnt_gjprovider =3D NULL
List of active vnodes
vnode vnode 0xfffffe01077375e8: 0xfffffe01077375e8: tag null, type VDIR
tag null, type VDIR
usecount 2, writecount 0, refcount 2 mountedhere 0
usecount 2, writecount 0, refcount 2 mountedhere 0
flags (VI_ACTIVE)
flags (VI_ACTIVE)
v_object 0xfffffe006c8d30e8 ref 0 pages 0 cleanbuf 0 dirtybuf 0
v_object 0xfffffe006c8d30e8 ref 0 pages 0 cleanbuf 0 dirtybuf 0
lock type zfs: EXCL by thread 0xfffffe0033498920 (pid 1668)
lock type zfs: EXCL by thread 0xfffffe0033498920 (pid 1668)
vp=3D0xfffffe01077375e8, lowervp=3D0xfffffe001dbc53f0
vp=3D0xfffffe01077375e8, lowervp=3D0xfffffe001dbc53f0
vnode vnode 0xfffffe006cdf79d8: 0xfffffe006cdf79d8: tag null, type VDIR
tag null, type VDIR
usecount 3, writecount 0, refcount 3 mountedhere 0
usecount 3, writecount 0, refcount 3 mountedhere 0
flags (VI_ACTIVE)
flags (VI_ACTIVE)
v_object 0xfffffe006c76eae0 ref 0 pages 0 cleanbuf 0 dirtybuf 0
v_object 0xfffffe006c76eae0 ref 0 pages 0 cleanbuf 0 dirtybuf 0
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cdf79d8, lowervp=3D0xfffffe006cdf77e0
vp=3D0xfffffe006cdf79d8, lowervp=3D0xfffffe006cdf77e0
vnode vnode 0xfffffe006cb67000: 0xfffffe006cb67000: tag null, type VDIR
tag null, type VDIR
usecount 1, writecount 0, refcount 1 mountedhere 0xfffffe001dc0e9a8
usecount 1, writecount 0, refcount 1 mountedhere 0xfffffe001dc0e9a8
flags (VI_ACTIVE)
flags (VI_ACTIVE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cb67000, lowervp=3D0xfffffe006cb671f8
vp=3D0xfffffe006cb67000, lowervp=3D0xfffffe006cb671f8
vnode vnode 0xfffffe006cb869d8: 0xfffffe006cb869d8: tag syncer, type VNON=
tag syncer, type VNON
usecount 1, writecount 0, refcount 1 mountedhere 0
usecount 1, writecount 0, refcount 1 mountedhere 0
flags (VI_ACTIVE)
flags (VI_ACTIVE)
lock type syncer: UNLOCKED
lock type syncer: UNLOCKED
vnode vnode 0xfffffe006cb86bd0: 0xfffffe006cb86bd0: tag null, type VDIR
tag null, type VDIR
usecount 1, writecount 0, refcount 1 mountedhere 0
usecount 1, writecount 0, refcount 1 mountedhere 0
flags (VV_ROOT|VI_ACTIVE)
flags (VV_ROOT|VI_ACTIVE)
v_object 0xfffffe006c8d30e8 ref 0 pages 0 cleanbuf 0 dirtybuf 0
v_object 0xfffffe006c8d30e8 ref 0 pages 0 cleanbuf 0 dirtybuf 0
lock type zfs: EXCL by thread 0xfffffe0033498920 (pid 1668)
lock type zfs: EXCL by thread 0xfffffe0033498920 (pid 1668)
vp=3D0xfffffe006cb86bd0, lowervp=3D0xfffffe001dbc53f0
vp=3D0xfffffe006cb86bd0, lowervp=3D0xfffffe001dbc53f0
List of inactive vnodes
vnode vnode 0xfffffe006cd8a1f8: 0xfffffe006cd8a1f8: tag null, type VDIR
tag null, type VDIR
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
v_object 0xfffffe006c718cb0 ref 0 pages 0 cleanbuf 0 dirtybuf 0
v_object 0xfffffe006c718cb0 ref 0 pages 0 cleanbuf 0 dirtybuf 0
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cd8a1f8, lowervp=3D0xfffffe006c895bd0
vp=3D0xfffffe006cd8a1f8, lowervp=3D0xfffffe006c895bd0
vnode vnode 0xfffffe006cebf1f8: 0xfffffe006cebf1f8: tag null, type VDIR
tag null, type VDIR
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
v_object 0xfffffe006ce740e8 ref 0 pages 0 cleanbuf 0 dirtybuf 0
v_object 0xfffffe006ce740e8 ref 0 pages 0 cleanbuf 0 dirtybuf 0
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cebf1f8, lowervp=3D0xfffffe006cebf3f0
vp=3D0xfffffe006cebf1f8, lowervp=3D0xfffffe006cebf3f0
vnode vnode 0xfffffe006cdf6000: 0xfffffe006cdf6000: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cdf6000, lowervp=3D0xfffffe006cddfdc8
vp=3D0xfffffe006cdf6000, lowervp=3D0xfffffe006cddfdc8
vnode vnode 0xfffffe006cdf63f0: 0xfffffe006cdf63f0: tag null, type VDIR
tag null, type VDIR
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
v_object 0xfffffe006ce75570 ref 0 pages 0 cleanbuf 0 dirtybuf 0
v_object 0xfffffe006ce75570 ref 0 pages 0 cleanbuf 0 dirtybuf 0
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cdf63f0, lowervp=3D0xfffffe006cdf61f8
vp=3D0xfffffe006cdf63f0, lowervp=3D0xfffffe006cdf61f8
vnode vnode 0xfffffe006cdf6dc8: 0xfffffe006cdf6dc8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cdf6dc8, lowervp=3D0xfffffe006cdf65e8
vp=3D0xfffffe006cdf6dc8, lowervp=3D0xfffffe006cdf65e8
vnode vnode 0xfffffe006cdf75e8: 0xfffffe006cdf75e8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cdf75e8, lowervp=3D0xfffffe006cdf73f0
vp=3D0xfffffe006cdf75e8, lowervp=3D0xfffffe006cdf73f0
vnode vnode 0xfffffe006cdf7dc8: 0xfffffe006cdf7dc8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
v_object 0xfffffe006cdd7ae0 ref 0 pages 0 cleanbuf 0 dirtybuf 0
v_object 0xfffffe006cdd7ae0 ref 0 pages 0 cleanbuf 0 dirtybuf 0
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cdf7dc8, lowervp=3D0xfffffe006cdf7bd0
vp=3D0xfffffe006cdf7dc8, lowervp=3D0xfffffe006cdf7bd0
vnode vnode 0xfffffe006cde41f8: 0xfffffe006cde41f8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cde41f8, lowervp=3D0xfffffe006cde4000
vp=3D0xfffffe006cde41f8, lowervp=3D0xfffffe006cde4000
vnode vnode 0xfffffe006cde45e8: 0xfffffe006cde45e8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cde45e8, lowervp=3D0xfffffe006cde43f0
vp=3D0xfffffe006cde45e8, lowervp=3D0xfffffe006cde43f0
vnode vnode 0xfffffe006cde49d8: 0xfffffe006cde49d8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cde49d8, lowervp=3D0xfffffe006cde47e0
vp=3D0xfffffe006cde49d8, lowervp=3D0xfffffe006cde47e0
vnode vnode 0xfffffe0033460bd0: 0xfffffe0033460bd0: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe0033460bd0, lowervp=3D0xfffffe006c56e000
vp=3D0xfffffe0033460bd0, lowervp=3D0xfffffe006c56e000
vnode vnode 0xfffffe006cfa85e8: 0xfffffe006cfa85e8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cfa85e8, lowervp=3D0xfffffe006cde51f8
vp=3D0xfffffe006cfa85e8, lowervp=3D0xfffffe006cde51f8
vnode vnode 0xfffffe006cfa81f8: 0xfffffe006cfa81f8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cfa81f8, lowervp=3D0xfffffe006cfa83f0
vp=3D0xfffffe006cfa81f8, lowervp=3D0xfffffe006cfa83f0
vnode vnode 0xfffffe006cfa7dc8: 0xfffffe006cfa7dc8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cfa7dc8, lowervp=3D0xfffffe006cfa8000
vp=3D0xfffffe006cfa7dc8, lowervp=3D0xfffffe006cfa8000
vnode vnode 0xfffffe006cfa79d8: 0xfffffe006cfa79d8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cfa79d8, lowervp=3D0xfffffe006cfa7bd0
vp=3D0xfffffe006cfa79d8, lowervp=3D0xfffffe006cfa7bd0
vnode vnode 0xfffffe006cfa75e8: 0xfffffe006cfa75e8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cfa75e8, lowervp=3D0xfffffe006cfa77e0
vp=3D0xfffffe006cfa75e8, lowervp=3D0xfffffe006cfa77e0
vnode vnode 0xfffffe006cfa71f8: 0xfffffe006cfa71f8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cfa71f8, lowervp=3D0xfffffe006cfa73f0
vp=3D0xfffffe006cfa71f8, lowervp=3D0xfffffe006cfa73f0
vnode vnode 0xfffffe006cfa6dc8: 0xfffffe006cfa6dc8: tag null, type VREG
tag null, type VREG
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe006cfa6dc8, lowervp=3D0xfffffe006cfa7000
vp=3D0xfffffe006cfa6dc8, lowervp=3D0xfffffe006cfa7000
vnode vnode 0xfffffe01077377e0: 0xfffffe01077377e0: tag null, type VDIR
tag null, type VDIR
usecount 0, writecount 0, refcount 0 mountedhere 0
usecount 0, writecount 0, refcount 0 mountedhere 0
flags (VI_FREE)
flags (VI_FREE)
v_object 0xfffffe006c718cb0 ref 0 pages 0 cleanbuf 0 dirtybuf 0
v_object 0xfffffe006c718cb0 ref 0 pages 0 cleanbuf 0 dirtybuf 0
lock type zfs: UNLOCKED
lock type zfs: UNLOCKED
vp=3D0xfffffe01077377e0, lowervp=3D0xfffffe006c895bd0
vp=3D0xfffffe01077377e0, lowervp=3D0xfffffe006c895bd0
Hope this is more useful.
Maybe these LORs are not very interesting (haven't check if they are on
the begnin list), but I get these now after raising WITNESS_COUNT:
lock order reversal:
1st 0xfffffe0007b3f680 unionfs (unionfs) @
/usr/local/share/deploy-tools/RELENG_9_3/src/sys/fs/unionfs/union_subr.c:=
368
2nd 0xfffffe000779e098 ufs (ufs) @
/usr/local/share/deploy-tools/RELENG_9_3/src/sys/kern/vfs_subr.c:2337
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a/frame
0xffffff82e10ce180
kdb_backtrace() at kdb_backtrace+0x37/frame 0xffffff82e10ce240
_witness_debugger() at _witness_debugger+0x2c/frame 0xffffff82e10ce260
witness_checkorder() at witness_checkorder+0x875/frame 0xffffff82e10ce320=
__lockmgr_args() at __lockmgr_args+0x1197/frame 0xffffff82e10ce400
ffs_lock() at ffs_lock+0x9c/frame 0xffffff82e10ce450
VOP_LOCK1_APV() at VOP_LOCK1_APV+0xe3/frame 0xffffff82e10ce480
_vn_lock() at _vn_lock+0x57/frame 0xffffff82e10ce4e0
vputx() at vputx+0x310/frame 0xffffff82e10ce540
unionfs_noderem() at unionfs_noderem+0x1d7/frame 0xffffff82e10ce5c0
unionfs_reclaim() at unionfs_reclaim+0x11/frame 0xffffff82e10ce5d0
VOP_RECLAIM_APV() at VOP_RECLAIM_APV+0x105/frame 0xffffff82e10ce600
vgonel() at vgonel+0x12f/frame 0xffffff82e10ce670
vrecycle() at vrecycle+0x5a/frame 0xffffff82e10ce6a0
unionfs_inactive() at unionfs_inactive+0x20/frame 0xffffff82e10ce6b0
VOP_INACTIVE_APV() at VOP_INACTIVE_APV+0x105/frame 0xffffff82e10ce6e0
vinactive() at vinactive+0xa4/frame 0xffffff82e10ce730
vputx() at vputx+0x425/frame 0xffffff82e10ce790
kern_statat_vnhook() at kern_statat_vnhook+0x15b/frame 0xffffff82e10ce910=
kern_statat() at kern_statat+0x15/frame 0xffffff82e10ce930
sys_lstat() at sys_lstat+0x2a/frame 0xffffff82e10ce9d0
amd64_syscall() at amd64_syscall+0x318/frame 0xffffff82e10ceaf0
Xfast_syscall() at Xfast_syscall+0xf7/frame 0xffffff82e10ceaf0
--- syscall (190, FreeBSD ELF64, sys_lstat), rip =3D 0x80060fa0c, rsp =3D=
0x7fffffffd6d8, rbp =3D 0 ---
lock order reversal:
1st 0xffffff826a62da08 bufwait (bufwait) @
/usr/local/share/deploy-tools/RELENG_9_3/src/sys/kern/vfs_bio.c:3140
2nd 0xfffffe0033431000 dirhash (dirhash) @
/usr/local/share/deploy-tools/RELENG_9_3/src/sys/ufs/ufs/ufs_dirhash.c:28=
4
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a/frame
0xffffff82e114b2d0
kdb_backtrace() at kdb_backtrace+0x37/frame 0xffffff82e114b390
_witness_debugger() at _witness_debugger+0x2c/frame 0xffffff82e114b3b0
witness_checkorder() at witness_checkorder+0x875/frame 0xffffff82e114b470=
_sx_xlock() at _sx_xlock+0x70/frame 0xffffff82e114b4a0
ufsdirhash_acquire() at ufsdirhash_acquire+0x44/frame 0xffffff82e114b4c0
ufsdirhash_add() at ufsdirhash_add+0x19/frame 0xffffff82e114b4f0
ufs_direnter() at ufs_direnter+0x6d8/frame 0xffffff82e114b5c0
ufs_mkdir() at ufs_mkdir+0x501/frame 0xffffff82e114b7b0
VOP_MKDIR_APV() at VOP_MKDIR_APV+0x105/frame 0xffffff82e114b7e0
kern_mkdirat() at kern_mkdirat+0x290/frame 0xffffff82e114b9d0
amd64_syscall() at amd64_syscall+0x318/frame 0xffffff82e114baf0
Xfast_syscall() at Xfast_syscall+0xf7/frame 0xffffff82e114baf0
--- syscall (136, FreeBSD ELF64, sys_mkdir), rip =3D 0x80091324c, rsp =3D=
0x7fffffffe778, rbp =3D 0x800c07050 ---
Thanks,
-Harry
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