arm/188933: lock order reversal: backtrace while writing to SD/eMMC
Winston Smith
smith.winston.101 at gmail.com
Thu Apr 24 01:00:01 UTC 2014
The following reply was made to PR arm/188933; it has been noted by GNATS.
From: Winston Smith <smith.winston.101 at gmail.com>
To: bug-followup at FreeBSD.org
Cc:
Subject: Re: arm/188933: lock order reversal: backtrace while writing to SD/eMMC
Date: Wed, 23 Apr 2014 20:56:30 -0400
--047d7b3a8214da983504f7bf51d6
Content-Type: text/plain; charset=UTF-8
Happened again, with a different report:
lock order reversal:
1st 0xc2ad7814 ufs (ufs) @
/usr/src/FreeBSD-stable-10/sys/kern/vfs_subr.c:2101
2nd 0xcd2533f0 bufwait (bufwait) @
/usr/src/FreeBSD-stable-10/sys/ufs/ffs/ffs_vnops.c:262
3rd 0xc34e1814 ufs (ufs) @
/usr/src/FreeBSD-stable-10/sys/kern/vfs_subr.c:2101
KDB: stack backtrace:
db_trace_self() at db_trace_self
pc = 0xc0540880 lr = 0xc0230328 (db_trace_self_wrapper+0x30)
sp = 0xdd9483f8 fp = 0xdd948510
r10 = 0xc34e1814
db_trace_self_wrapper() at db_trace_self_wrapper+0x30
pc = 0xc0230328 lr = 0xc0398c90 (kdb_backtrace+0x38)
sp = 0xdd948518 fp = 0xdd948520
r4 = 0xc067e3a4 r5 = 0xc05a5545
r6 = 0xc05ad9ad r7 = 0xc05c0ac2
kdb_backtrace() at kdb_backtrace+0x38
pc = 0xc0398c90 lr = 0xc03b367c (witness_checkorder+0xe48)
sp = 0xdd948528 fp = 0xdd948578
r4 = 0xc05940e2
witness_checkorder() at witness_checkorder+0xe48
pc = 0xc03b367c lr = 0xc0344d3c (__lockmgr_args+0x8f0)
sp = 0xdd948580 fp = 0xdd9485e8
r4 = 0x00000100 r5 = 0x00080100
r6 = 0x00000835 r7 = 0xc34e1834
r8 = 0xc34e1814 r9 = 0x00080000
r10 = 0xc05ad9aa
__lockmgr_args() at __lockmgr_args+0x8f0
pc = 0xc0344d3c lr = 0xc04f6e54 (ffs_lock+0x80)
sp = 0xdd9485f0 fp = 0xdd948618
r4 = 0xdd948638 r5 = 0x00080100
r6 = 0xc34e17e0 r7 = 0xc34e1814
r8 = 0xc34e1834 r9 = 0x00000000
r10 = 0x00000835
ffs_lock() at ffs_lock+0x80
pc = 0xc04f6e54 lr = 0xc0565e74 (VOP_LOCK1_APV+0xd8)
sp = 0xdd948620 fp = 0xdd948630
r4 = 0xdd948638 r5 = 0xc06624c0
r6 = 0x00000000 r7 = 0x00080100
r8 = 0xdd948638 r9 = 0xc05acbea
VOP_LOCK1_APV() at VOP_LOCK1_APV+0xd8
pc = 0xc0565e74 lr = 0xc0414b20 (_vn_lock+0x44)
sp = 0xdd948638 fp = 0xdd948668
r4 = 0xc34e17e0 r5 = 0x00000004
r6 = 0xc05ad9aa
_vn_lock() at _vn_lock+0x44
pc = 0xc0414b20 lr = 0xc04054d0 (vget+0x60)
sp = 0xdd948670 fp = 0xdd948690
r4 = 0xc34e17e0 r5 = 0x00000004
r6 = 0x00080100 r7 = 0xc07dbdac
r8 = 0xc2c42c80 r9 = 0xc05acbea
r10 = 0x00000000
vget() at vget+0x60
pc = 0xc04054d0 lr = 0xc03f9b4c (vfs_hash_get+0xd8)
sp = 0xdd948698 fp = 0xdd9486c8
r4 = 0xc07dbd90 r5 = 0x00000004
r6 = 0xc29e4ac0 r7 = 0xc07dbdac
r8 = 0xc34e17e0
vfs_hash_get() at vfs_hash_get+0xd8
pc = 0xc03f9b4c lr = 0xc04f1ea4 (ffs_vgetf+0x3c)
sp = 0xdd9486d0 fp = 0xdd948728
r4 = 0xc325b0c0 r5 = 0x00080000
r6 = 0xc29e4ac0 r7 = 0x00000004
r8 = 0xc325b0c0 r9 = 0x00000000
r10 = 0xdd948788
ffs_vgetf() at ffs_vgetf+0x3c
pc = 0xc04f1ea4 lr = 0xc04e8d40 (softdep_sync_buf+0x9c8)
sp = 0xdd948730 fp = 0xdd9487a8
r4 = 0xc325b0c0 r5 = 0xc05bcdd9
r6 = 0xc05bcdd9 r7 = 0xc29f1300
r8 = 0xc325b0c0 r9 = 0x00000000
r10 = 0x00000004
softdep_sync_buf() at softdep_sync_buf+0x9c8
pc = 0xc04e8d40 lr = 0xc04f7c6c (ffs_syncvnode+0x2ec)
sp = 0xdd9487b0 fp = 0xdd948800
r4 = 0xc2ad77e0 r5 = 0x00000000
r6 = 0xc05c0abf r7 = 0x00000001
r8 = 0xcd2533f0 r9 = 0x00000010
r10 = 0xcd253398
ffs_syncvnode() at ffs_syncvnode+0x2ec
pc = 0xc04f7c6c lr = 0xc04cb414 (ffs_truncate+0x6d8)
sp = 0xdd948808 fp = 0xdd9489b8
r4 = 0xc2ad77e0 r5 = 0x00000000
r6 = 0x00000200 r7 = 0xc2a01c80
r8 = 0x00000880 r9 = 0x00000000
r10 = 0x00000200
ffs_truncate() at ffs_truncate+0x6d8
pc = 0xc04cb414 lr = 0xc04ff5bc (ufs_direnter+0x8a8)
sp = 0xdd9489c0 fp = 0xdd948a28
r4 = 0xc2ad77e0 r5 = 0xc2a01c80
r6 = 0x00000000 r7 = 0x00000000
r8 = 0xc34e17e0 r9 = 0xc2ad77e0
r10 = 0x00000000
ufs_direnter() at ufs_direnter+0x8a8
pc = 0xc04ff5bc lr = 0xc05087f4 (ufs_makeinode+0x3ec)
sp = 0xdd948a30 fp = 0xdd948b90
r4 = 0x00000000 r5 = 0xdd948d30
r6 = 0xdd948a50 r7 = 0x00000000
r8 = 0xdd948d48 r9 = 0xc2ad77e0
r10 = 0xc34df780
ufs_makeinode() at ufs_makeinode+0x3ec
pc = 0xc05087f4 lr = 0xc0504bdc (ufs_create+0x24)
sp = 0xdd948b98 fp = 0xdd948b98
r4 = 0xdd948c68 r5 = 0xc06629d0
r6 = 0x00000000 r7 = 0x00000a03
r8 = 0x00000000 r9 = 0xdd948d50
r10 = 0xdd948d30
ufs_create() at ufs_create+0x24
pc = 0xc0504bdc lr = 0xc0563fc4 (VOP_CREATE_APV+0xd0)
sp = 0xdd948ba0 fp = 0xdd948bb0
VOP_CREATE_APV() at VOP_CREATE_APV+0xd0
pc = 0xc0563fc4 lr = 0xc04143ac (vn_open_cred+0x274)
sp = 0xdd948bb8 fp = 0xdd948c98
r4 = 0xdd948ce0 r5 = 0xdd948d30
r6 = 0xc2ad77e0
vn_open_cred() at vn_open_cred+0x274
pc = 0xc04143ac lr = 0xc0414130 (vn_open+0x24)
sp = 0xdd948ca0 fp = 0xdd948ca8
r4 = 0xc2c42c80 r5 = 0x000500cf
r6 = 0x00000012 r7 = 0xdd948ce0
r8 = 0x00000000 r9 = 0xbfffe25c
r10 = 0xdd948cd0
vn_open() at vn_open+0x24
pc = 0xc0414130 lr = 0xc040d668 (kern_openat+0x248)
sp = 0xdd948cb0 fp = 0xdd948da8
kern_openat() at kern_openat+0x248
pc = 0xc040d668 lr = 0xc040d3b0 (sys_open+0x28)
sp = 0xdd948db0 fp = 0xdd948db8
r4 = 0xc2c42c80 r5 = 0xc2c2c640
r6 = 0x00000000 r7 = 0x00000000
r8 = 0xffffffe4 r9 = 0xdd948e10
r10 = 0x01650f48
sys_open() at sys_open+0x28
pc = 0xc040d3b0 lr = 0xc0552a7c (swi_handler+0x284)
sp = 0xdd948dc0 fp = 0xdd948e58
swi_handler() at swi_handler+0x284
pc = 0xc0552a7c lr = 0xc05421ac (swi_entry+0x2c)
sp = 0xdd948e60 fp = 0xbfffe188
r4 = 0xbfffdfa8 r5 = 0xffffffe4
r6 = 0xbfffe250 r7 = 0x00000005
r8 = 0xffffffe4 r9 = 0x00000001
swi_entry() at swi_entry+0x2c
pc = 0xc05421ac lr = 0xc05421ac (swi_entry+0x2c)
sp = 0xdd948e60 fp = 0xbfffe188
Unable to unwind further
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<div dir=3D"ltr"><div>Happened again, with a different report:</div><div><b=
r></div><div><br></div><div>lock order reversal:</div><div>=C2=A01st 0xc2ad=
7814 ufs (ufs) @ /usr/src/FreeBSD-stable-10/sys/kern/vfs_subr.c:2101</div><=
div>
=C2=A02nd 0xcd2533f0 bufwait (bufwait) @ /usr/src/FreeBSD-stable-10/sys/ufs=
/ffs/ffs_vnops.c:262</div><div>=C2=A03rd 0xc34e1814 ufs (ufs) @ /usr/src/Fr=
eeBSD-stable-10/sys/kern/vfs_subr.c:2101</div><div>KDB: stack backtrace:</d=
iv><div>
db_trace_self() at db_trace_self</div><div><span class=3D"" style=3D"white-=
space:pre"> </span> pc =3D 0xc0540880 =C2=A0lr =3D 0xc0230328 (db_trace_sel=
f_wrapper+0x30)</div><div><span class=3D"" style=3D"white-space:pre"> </spa=
n> sp =3D 0xdd9483f8 =C2=A0fp =3D 0xdd948510</div>
<div><span class=3D"" style=3D"white-space:pre"> </span>r10 =3D 0xc34e1814<=
/div><div>db_trace_self_wrapper() at db_trace_self_wrapper+0x30</div><div><=
span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc0230328 =C2=A0=
lr =3D 0xc0398c90 (kdb_backtrace+0x38)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948518 =
=C2=A0fp =3D 0xdd948520</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xc067e3a4 =C2=A0r5 =3D 0xc05a5545</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xc05ad9ad =C2=A0r7 =3D 0xc=
05c0ac2</div>
<div>kdb_backtrace() at kdb_backtrace+0x38</div><div><span class=3D"" style=
=3D"white-space:pre"> </span> pc =3D 0xc0398c90 =C2=A0lr =3D 0xc03b367c (wi=
tness_checkorder+0xe48)</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> sp =3D 0xdd948528 =C2=A0fp =3D 0xdd948578</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r4 =3D 0xc05940e2<=
/div><div>witness_checkorder() at witness_checkorder+0xe48</div><div><span =
class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc03b367c =C2=A0lr =
=3D 0xc0344d3c (__lockmgr_args+0x8f0)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948580 =
=C2=A0fp =3D 0xdd9485e8</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0x00000100 =C2=A0r5 =3D 0x00080100</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0x00000835 =C2=A0r7 =3D 0xc=
34e1834</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xc34e1814 =
=C2=A0r9 =3D 0x00080000</div><div><span class=3D"" style=3D"white-space:pre=
"> </span>r10 =3D 0xc05ad9aa</div><div>__lockmgr_args() at __lockmgr_args+0=
x8f0</div><div>
<span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc0344d3c =C2=
=A0lr =3D 0xc04f6e54 (ffs_lock+0x80)</div><div><span class=3D"" style=3D"wh=
ite-space:pre"> </span> sp =3D 0xdd9485f0 =C2=A0fp =3D 0xdd948618</div><div=
><span class=3D"" style=3D"white-space:pre"> </span> r4 =3D 0xdd948638 =C2=
=A0r5 =3D 0x00080100</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xc34e17e0 =
=C2=A0r7 =3D 0xc34e1814</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r8 =3D 0xc34e1834 =C2=A0r9 =3D 0x00000000</div><div><span class=
=3D"" style=3D"white-space:pre"> </span>r10 =3D 0x00000835</div>
<div>ffs_lock() at ffs_lock+0x80</div><div><span class=3D"" style=3D"white-=
space:pre"> </span> pc =3D 0xc04f6e54 =C2=A0lr =3D 0xc0565e74 (VOP_LOCK1_AP=
V+0xd8)</div><div><span class=3D"" style=3D"white-space:pre"> </span> sp =
=3D 0xdd948620 =C2=A0fp =3D 0xdd948630</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r4 =3D 0xdd948638 =
=C2=A0r5 =3D 0xc06624c0</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r6 =3D 0x00000000 =C2=A0r7 =3D 0x00080100</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xdd948638 =C2=A0r9 =3D 0xc=
05acbea</div>
<div>VOP_LOCK1_APV() at VOP_LOCK1_APV+0xd8</div><div><span class=3D"" style=
=3D"white-space:pre"> </span> pc =3D 0xc0565e74 =C2=A0lr =3D 0xc0414b20 (_v=
n_lock+0x44)</div><div><span class=3D"" style=3D"white-space:pre"> </span> =
sp =3D 0xdd948638 =C2=A0fp =3D 0xdd948668</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r4 =3D 0xc34e17e0 =
=C2=A0r5 =3D 0x00000004</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r6 =3D 0xc05ad9aa</div><div>_vn_lock() at _vn_lock+0x44</div><di=
v><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc0414b20 =C2=
=A0lr =3D 0xc04054d0 (vget+0x60)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948670 =
=C2=A0fp =3D 0xdd948690</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xc34e17e0 =C2=A0r5 =3D 0x00000004</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0x00080100 =C2=A0r7 =3D 0xc=
07dbdac</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xc2c42c80 =
=C2=A0r9 =3D 0xc05acbea</div><div><span class=3D"" style=3D"white-space:pre=
"> </span>r10 =3D 0x00000000</div><div>vget() at vget+0x60</div><div><span =
class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc04054d0 =C2=A0lr =
=3D 0xc03f9b4c (vfs_hash_get+0xd8)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948698 =
=C2=A0fp =3D 0xdd9486c8</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xc07dbd90 =C2=A0r5 =3D 0x00000004</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xc29e4ac0 =C2=A0r7 =3D 0xc=
07dbdac</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xc34e17e0<=
/div><div>vfs_hash_get() at vfs_hash_get+0xd8</div><div><span class=3D"" st=
yle=3D"white-space:pre"> </span> pc =3D 0xc03f9b4c =C2=A0lr =3D 0xc04f1ea4 =
(ffs_vgetf+0x3c)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd9486d0 =
=C2=A0fp =3D 0xdd948728</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xc325b0c0 =C2=A0r5 =3D 0x00080000</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xc29e4ac0 =C2=A0r7 =3D 0x0=
0000004</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xc325b0c0 =
=C2=A0r9 =3D 0x00000000</div><div><span class=3D"" style=3D"white-space:pre=
"> </span>r10 =3D 0xdd948788</div><div>ffs_vgetf() at ffs_vgetf+0x3c</div><=
div><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc04f1ea4 =
=C2=A0lr =3D 0xc04e8d40 (softdep_sync_buf+0x9c8)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948730 =
=C2=A0fp =3D 0xdd9487a8</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xc325b0c0 =C2=A0r5 =3D 0xc05bcdd9</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xc05bcdd9 =C2=A0r7 =3D 0xc=
29f1300</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xc325b0c0 =
=C2=A0r9 =3D 0x00000000</div><div><span class=3D"" style=3D"white-space:pre=
"> </span>r10 =3D 0x00000004</div><div>softdep_sync_buf() at softdep_sync_b=
uf+0x9c8</div><div>
<span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc04e8d40 =C2=
=A0lr =3D 0xc04f7c6c (ffs_syncvnode+0x2ec)</div><div><span class=3D"" style=
=3D"white-space:pre"> </span> sp =3D 0xdd9487b0 =C2=A0fp =3D 0xdd948800</di=
v><div><span class=3D"" style=3D"white-space:pre"> </span> r4 =3D 0xc2ad77e=
0 =C2=A0r5 =3D 0x00000000</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xc05c0abf =
=C2=A0r7 =3D 0x00000001</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r8 =3D 0xcd2533f0 =C2=A0r9 =3D 0x00000010</div><div><span class=
=3D"" style=3D"white-space:pre"> </span>r10 =3D 0xcd253398</div>
<div>ffs_syncvnode() at ffs_syncvnode+0x2ec</div><div><span class=3D"" styl=
e=3D"white-space:pre"> </span> pc =3D 0xc04f7c6c =C2=A0lr =3D 0xc04cb414 (f=
fs_truncate+0x6d8)</div><div><span class=3D"" style=3D"white-space:pre"> </=
span> sp =3D 0xdd948808 =C2=A0fp =3D 0xdd9489b8</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r4 =3D 0xc2ad77e0 =
=C2=A0r5 =3D 0x00000000</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r6 =3D 0x00000200 =C2=A0r7 =3D 0xc2a01c80</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r8 =3D 0x00000880 =C2=A0r9 =3D 0x0=
0000000</div>
<div><span class=3D"" style=3D"white-space:pre"> </span>r10 =3D 0x00000200<=
/div><div>ffs_truncate() at ffs_truncate+0x6d8</div><div><span class=3D"" s=
tyle=3D"white-space:pre"> </span> pc =3D 0xc04cb414 =C2=A0lr =3D 0xc04ff5bc=
(ufs_direnter+0x8a8)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd9489c0 =
=C2=A0fp =3D 0xdd948a28</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xc2ad77e0 =C2=A0r5 =3D 0xc2a01c80</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0x00000000 =C2=A0r7 =3D 0x0=
0000000</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xc34e17e0 =
=C2=A0r9 =3D 0xc2ad77e0</div><div><span class=3D"" style=3D"white-space:pre=
"> </span>r10 =3D 0x00000000</div><div>ufs_direnter() at ufs_direnter+0x8a8=
</div><div><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc04=
ff5bc =C2=A0lr =3D 0xc05087f4 (ufs_makeinode+0x3ec)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948a30 =
=C2=A0fp =3D 0xdd948b90</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0x00000000 =C2=A0r5 =3D 0xdd948d30</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xdd948a50 =C2=A0r7 =3D 0x0=
0000000</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xdd948d48 =
=C2=A0r9 =3D 0xc2ad77e0</div><div><span class=3D"" style=3D"white-space:pre=
"> </span>r10 =3D 0xc34df780</div><div>ufs_makeinode() at ufs_makeinode+0x3=
ec</div><div><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc=
05087f4 =C2=A0lr =3D 0xc0504bdc (ufs_create+0x24)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948b98 =
=C2=A0fp =3D 0xdd948b98</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xdd948c68 =C2=A0r5 =3D 0xc06629d0</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0x00000000 =C2=A0r7 =3D 0x0=
0000a03</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0x00000000 =
=C2=A0r9 =3D 0xdd948d50</div><div><span class=3D"" style=3D"white-space:pre=
"> </span>r10 =3D 0xdd948d30</div><div>ufs_create() at ufs_create+0x24</div=
><div><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc0504bdc=
=C2=A0lr =3D 0xc0563fc4 (VOP_CREATE_APV+0xd0)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948ba0 =
=C2=A0fp =3D 0xdd948bb0</div><div>VOP_CREATE_APV() at VOP_CREATE_APV+0xd0</=
div><div><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc0563=
fc4 =C2=A0lr =3D 0xc04143ac (vn_open_cred+0x274)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948bb8 =
=C2=A0fp =3D 0xdd948c98</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xdd948ce0 =C2=A0r5 =3D 0xdd948d30</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xc2ad77e0</div>
<div>vn_open_cred() at vn_open_cred+0x274</div><div><span class=3D"" style=
=3D"white-space:pre"> </span> pc =3D 0xc04143ac =C2=A0lr =3D 0xc0414130 (vn=
_open+0x24)</div><div><span class=3D"" style=3D"white-space:pre"> </span> s=
p =3D 0xdd948ca0 =C2=A0fp =3D 0xdd948ca8</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r4 =3D 0xc2c42c80 =
=C2=A0r5 =3D 0x000500cf</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r6 =3D 0x00000012 =C2=A0r7 =3D 0xdd948ce0</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r8 =3D 0x00000000 =C2=A0r9 =3D 0xb=
fffe25c</div>
<div><span class=3D"" style=3D"white-space:pre"> </span>r10 =3D 0xdd948cd0<=
/div><div>vn_open() at vn_open+0x24</div><div><span class=3D"" style=3D"whi=
te-space:pre"> </span> pc =3D 0xc0414130 =C2=A0lr =3D 0xc040d668 (kern_open=
at+0x248)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948cb0 =
=C2=A0fp =3D 0xdd948da8</div><div>kern_openat() at kern_openat+0x248</div><=
div><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc040d668 =
=C2=A0lr =3D 0xc040d3b0 (sys_open+0x28)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948db0 =
=C2=A0fp =3D 0xdd948db8</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xc2c42c80 =C2=A0r5 =3D 0xc2c2c640</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0x00000000 =C2=A0r7 =3D 0x0=
0000000</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xffffffe4 =
=C2=A0r9 =3D 0xdd948e10</div><div><span class=3D"" style=3D"white-space:pre=
"> </span>r10 =3D 0x01650f48</div><div>sys_open() at sys_open+0x28</div><di=
v><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc040d3b0 =C2=
=A0lr =3D 0xc0552a7c (swi_handler+0x284)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948dc0 =
=C2=A0fp =3D 0xdd948e58</div><div>swi_handler() at swi_handler+0x284</div><=
div><span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc0552a7c =
=C2=A0lr =3D 0xc05421ac (swi_entry+0x2c)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948e60 =
=C2=A0fp =3D 0xbfffe188</div><div><span class=3D"" style=3D"white-space:pre=
"> </span> r4 =3D 0xbfffdfa8 =C2=A0r5 =3D 0xffffffe4</div><div><span class=
=3D"" style=3D"white-space:pre"> </span> r6 =3D 0xbfffe250 =C2=A0r7 =3D 0x0=
0000005</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> r8 =3D 0xffffffe4 =
=C2=A0r9 =3D 0x00000001</div><div>swi_entry() at swi_entry+0x2c</div><div><=
span class=3D"" style=3D"white-space:pre"> </span> pc =3D 0xc05421ac =C2=A0=
lr =3D 0xc05421ac (swi_entry+0x2c)</div>
<div><span class=3D"" style=3D"white-space:pre"> </span> sp =3D 0xdd948e60 =
=C2=A0fp =3D 0xbfffe188</div><div>Unable to unwind further</div><div><br></=
div></div>
--047d7b3a8214da983504f7bf51d6--
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