kern/58391: Trap 12 with heavy disk load on ide vinum
mirror
Alexander Haderer
alexander.haderer at charite.de
Thu Oct 23 06:10:32 PDT 2003
The following reply was made to PR kern/58391; it has been noted by GNATS.
From: Alexander Haderer <alexander.haderer at charite.de>
To: Greg 'groggy' Lehey <grog at FreeBSD.org>
Cc: FreeBSD-gnats-submit at FreeBSD.org
Subject: Re: kern/58391: Trap 12 with heavy disk load on ide vinum
mirror
Date: Thu, 23 Oct 2003 14:54:38 +0200
At 11:43 23.10.2003 +0930, Greg 'groggy' Lehey wrote:
>On Wednesday, 22 October 2003 at 21:26:36 +0200, Alexander Haderer wrote:
>>
>>> Description:
>> Setup: A single CPU x86 running 4.8R with GENERIC kernel, a SCSI disk
>> holds OS and two 160G Maxtor disks (ad0, ad2) setup as vinum mirror
>> to hold data (whole disk). Ata write cache is off as well as hw.ata.tags.
>>
>> When doing high io load to the ide disks the kernel panics with trap 12:
>>
>> Fatal trap 12: page fault while in kernel mode
>
>Please take a dump of the system and supply a back trace. Ensure that
>you have debugging symbols in the kernel. Don't delete the dump: I
>will need more information.
Here comes the backtrace. This time we get a trap 18 with div by zero.
gdb -k -s kernel.debug -e /var/crash/kernel.11 -c /var/crash/vmcore.11=20
gdb where full:
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This GDB was configured as "i386-unknown-freebsd"...
IdlePTD at phsyical address 0x00538000
initial pcb at physical address 0x0046cec0
panicstr: integer divide fault
panic messages:
---
Fatal trap 18: integer divide fault while in kernel mode
instruction pointer =3D 0x8:0xc039fe9a
stack pointer =3D 0x10:0xd1a37c5c
frame pointer =3D 0x10:0xd1a37cc8
code segment =3D base 0x0, limit 0xfffff, type 0x1b
=3D DPL 0, pres 1, def32 1, gran 1
processor eflags =3D interrupt enabled, resume, IOPL =3D 0
current process =3D 504 (vinum)
interrupt mask =3D none
trap number =3D 18
panic: integer divide fault
syncing disks... 76 72 67 64 62 62 56 56 52 51 51 46 46 41 41 36 36 31 31 26=
26 22 21 21 16 16 12 11 11 7 7 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2=20
giving up on 2 buffers
Uptime: 1h12m5s
dumping to dev #da/0x20001, offset 3670144
dump 255 254 253 252 251 250 249 248 247 246 245 244 243 242 241 240 239 238=
237 236 235 234 233 232 231 230 229 228 227 226 225 224 223 222 221 220 219=
218 217 216 215 214 213 212 211 210 209 208 207 206 205 204 203 202 201 200=
199 198 197 196 195 194 193 192 191 190 189 188 187 186 185 184 183 182 181=
180 179 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162=
161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143=
142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124=
123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105=
104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82=
81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57=
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32=
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5=
4 3 2 1 0=20
---
#0 dumpsys () at ../../kern/kern_shutdown.c:487
487 if (dumping++) {
#0 dumpsys () at ../../kern/kern_shutdown.c:487
error =3D 0
#1 0xc0216273 in boot (howto=3D256) at ../../kern/kern_shutdown.c:316
howto =3D 256
#2 0xc0216698 in poweroff_wait (junk=3D0xc040440c, howto=3D-1069531382)
at ../../kern/kern_shutdown.c:595
fmt =3D 0xc040440c "%s"
bootopt =3D 256
buf =3D "integer divide fault", '\000' <repeats 235 times>
#3 0xc0389f0e in trap_fatal (frame=3D0xd1a37c1c, eva=3D0)
at ../../i386/i386/trap.c:974
frame =3D (struct trapframe *) 0x100
code =3D -1069530100
type =3D 18
ss =3D -1069530100
esp =3D 0
softseg =3D {ssd_base =3D 0, ssd_limit =3D 1048575, ssd_type =3D 27,=
=20
ssd_dpl =3D 0, ssd_p =3D 1, ssd_xx =3D 11, ssd_xx1 =3D 3, ssd_def32 =3D 1,=
=20
ssd_gran =3D 1}
#4 0xc03898eb in trap (frame=3D{tf_fs =3D 16, tf_es =3D 16, tf_ds =3D 16,=
tf_edi =3D 0,=20
tf_esi =3D 0, tf_ebp =3D -777814840, tf_isp =3D -777814968, tf_ebx =3D=
4096,=20
tf_edx =3D 0, tf_ecx =3D 0, tf_eax =3D 1, tf_trapno =3D 18, tf_err =3D=
0,=20
tf_eip =3D -1069941094, tf_cs =3D 8, tf_eflags =3D 66118, tf_esp =3D=
0,=20
tf_ss =3D 4096}) at ../../i386/i386/trap.c:636
p =3D (struct proc *) 0xd19d85a0
sticks =3D 10
i =3D 0
ucode =3D 0
type =3D 18
code =3D 0
eva =3D 0
#5 0xc039fe9a in __qdivrem (uq=3D4096, vq=3D0, arq=3D0x0)
at ../../libkern/qdivrem.c:100
zero =3D 0
uq =3D 15106053227377852416
vq =3D 0
tmp =3D {q =3D -4601592171749737248, uq =3D -4601592171749737248, sl=
=3D {
-777814816, -1071391668}, ul =3D {3517152480, 3223575628}}
u =3D (digit *) 0x0
v =3D (digit *) 0x9
q =3D (digit *) 0xd1a37cb0
v1 =3D 0
v2 =3D 0
qhat =3D 3248239104
rhat =3D 0
t =3D 0
m =3D -964404116
n =3D 0
d =3D 512
j =3D 0
i =3D 0
uspace =3D {0, 0, 16384, 0, 512}
vspace =3D {23660, 50820, 16384, 0, 512}
qspace =3D {512, 0, 15648, 49219, 0}
#6 0xc039fd7f in __divdi3 (a=3D4096, b=3D0) at ../../libkern/divdi3.c:61
a =3D 0
b =3D 0
ua =3D 4096
ub =3D 0
uq =3D 0
neg =3D 0
#7 0xc17d0da7 in ?? ()
No symbol table info available.
#8 0xc17d15cd in ?? ()
No symbol table info available.
#9 0xc17cf69b in ?? ()
No symbol table info available.
#10 0xc17cf88e in ?? ()
No symbol table info available.
#11 0xc17d2461 in ?? ()
No symbol table info available.
#12 0xc024f0ce in spec_ioctl (ap=3D0xd1a37de4)
at ../../miscfs/specfs/spec_vnops.c:306
ap =3D (struct vop_ioctl_args *) 0xc6845c6c
dev =3D 0x200
#13 0xc024edf9 in spec_vnoperate (ap=3D0xd1a37de4)
at ../../miscfs/specfs/spec_vnops.c:119
ap =3D (struct vop_generic_args *) 0x0
#14 0xc032b495 in ufs_vnoperatespec (ap=3D0xd1a37de4)
at ../../ufs/ufs/ufs_vnops.c:2394
ap =3D (struct vop_generic_args *) 0x0
#15 0xc024b687 in vn_ioctl (fp=3D0xc17bbc40, com=3D18013, data=3D0xd1a37ea8=
"",=20
p=3D0xd19d85a0) at vnode_if.h:429
a =3D {a_desc =3D 0xc040de20, a_vp =3D 0xd1a1fc00, a_command =3D=
18013,=20
a_data =3D 0xd1a37ea8 "", a_fflag =3D 3, a_cred =3D 0xc17b2600, a_p =3D=
0xd19d85a0}
vp =3D (struct vnode *) 0xd1a1fc00
command =3D 18013
data =3D 0xd1a37ea8 ""
fflag =3D 0
cred =3D (struct ucred *) 0x0
p =3D (struct proc *) 0x200
p =3D (struct proc *) 0x200
vp =3D (struct vnode *) 0xd1a1fc00
vattr =3D {va_type =3D 7331034, va_mode =3D 2668, va_nlink =3D=
-11872,=20
va_uid =3D 3231424796, va_gid =3D 3517152812, va_fsid =3D 3224921934,=20
va_fileid =3D -1069001088, va_size =3D 3224922420, va_blocksize =3D=
134926336,=20
va_atime =3D {tv_sec =3D 77505573, tv_nsec =3D -778040724}, va_mtime =3D {
tv_sec =3D 0, tv_nsec =3D -777814408}, va_ctime =3D {tv_sec =3D=
-1070043292,=20
tv_nsec =3D -778040724}, va_gen =3D 134926336, va_flags =3D 3231504836,=
=20
va_rdev =3D 3231424796, va_bytes =3D 0, va_filerev =3D 579504200489107456,=
=20
va_vaflags =3D 3231424796, va_spare =3D 0}
error =3D 3
#16 0xc02257fa in ioctl (p=3D0xd19d85a0, uap=3D0xd1a37f80) at=
../../sys/file.h:178
error =3D 3
fp =3D (struct file *) 0xc17bbc40
com =3D 18013
data =3D 0xd1a37ea8 ""
p =3D (struct proc *) 0xd19d85a0
fp =3D (struct file *) 0xc17bbc40
fdp =3D (struct filedesc *) 0x0
com =3D 18013
error =3D 3
size =3D 0
data =3D 0xd1a37ea8 ""
memp =3D 0x0
tmp =3D 4
ubuf =3D {
stkbuf =3D=
"\000\000\000\000\016\000\000\000\002\000\000\0000\n=D1\000\000\000\001\000=
\000\000\000=E4~=A3=D1=D0\t!\003\000\000\000\000\034=A1\233=C0=
=BA=D1\003\000\000\000\034=A1\233=C0=
=BA=D1\003\000\000\000\000\n=D1\220\223\237=D1", '\000' <repeats 12 times>,=
"\205\235=D1\205\235=D1\000\n=D1\000=D0\n\b(\177=A3=D1\001=B2=
=C0\001\000\000\000\205\235=D1\000\000\000\000\001\000\000\000\200\177=A3=
=D1\003\000\000", align =3D 0}
#17 0xc038a1bd in syscall2 (frame=3D{tf_fs =3D 47, tf_es =3D 47, tf_ds =3D=
47,=20
tf_edi =3D -1077937056, tf_esi =3D -1077937064, tf_ebp =3D=
-1077937280,=20
tf_isp =3D -777814060, tf_ebx =3D 1, tf_edx =3D 1, tf_ecx =3D -7,=
tf_eax =3D 54,=20
tf_trapno =3D 12, tf_err =3D 2, tf_eip =3D 134675508, tf_cs =3D 31,=20
tf_eflags =3D 659, tf_esp =3D -1077937324, tf_ss =3D 47})
at ../../i386/i386/trap.c:1175
params =3D 0xbfbffb58 "\004"
i =3D 0
callp =3D (struct sysent *) 0xc042d690
p =3D (struct proc *) 0xd19d85a0
orig_tf_eflags =3D 659
sticks =3D 0
error =3D 0
narg =3D 3
args =3D {4, 18013, 0, 0, 0, 0, 0, 0}
have_mplock =3D 1
code =3D 54
#18 0xc037afd5 in Xint0x80_syscall ()
No symbol table info available.
#19 0x80483d9 in ?? ()
No symbol table info available.
#20 0x804813e in ?? ()
No symbol table info available.
Alexander
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