Date: Thu, 28 Feb 2002 13:52:33 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Kris Kennaway <kris@obsecurity.org> Cc: Ian Dowse <iedowse@maths.tcd.ie>, Kirk McKusick <mckusick@mckusick.com>, Matthew Dillon <dillon@apollo.backplane.com>, Tony Finch <dot@dotat.at>, fs@FreeBSD.ORG, fanf@chiark.greenend.org.uk Subject: Re: UFS panic on -stable Message-ID: <20020228135233.B5586@xor.obsecurity.org> In-Reply-To: <20020226184340.A78562@xor.obsecurity.org>; from kris@obsecurity.org on Tue, Feb 26, 2002 at 06:43:40PM -0800 References: <200202260141.g1Q1f8i28365@beastie.mckusick.com> <200202260237.aa51774@salmon.maths.tcd.ie> <20020226184340.A78562@xor.obsecurity.org>
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On Tue, Feb 26, 2002 at 06:43:40PM -0800, Kris Kennaway wrote:
> On Tue, Feb 26, 2002 at 02:37:47AM +0000, Ian Dowse wrote:
>=20
> > Kris, if it's not too awkward to make changes to the cluster kernels,
> > could you try applying the following extra sanity check to ufs_chmod?
> > This should attempt to catch the bug a little bit earlier by detecting
> > an attempt to VOP_SETATTR a free inode.
>=20
> No problem, I'll let you know how it goes.
Well, I got a different panic last night on one of them (I don't think
there's much hope of debugging this one).
The only thing I'd change was to increase kern.maxvnodes from 33952 to
100000 (they weren't running a kernel with your patch yet, one of them
is now ;-).
Kris
IdlePTD at phsyical address 0x004a2000
initial pcb at physical address 0x003e84a0
panicstr: from debugger
panic messages:
---
panic: double fault
panic: from debugger
Uptime: 7h21m38s
dumping to dev #ad/1, offset 1051136
dump ata0: resetting devices .. done
510 509 508 507 506 505 504 503 502 501 500 499 498 497 496 495 494 493 492=
491 490 489 488 487 486 485 484 483 482 481 480 479 478 477 476 475 474 47=
3 472 471 470 469 468 467 466 465 464 463 462 461 460 459 458 457 456 455 4=
54 453 452 451 450 449 448 447 446 445 444 443 442 441 440 439 438 437 436 =
435 434 433 432 431 430 429 428 427 426 425 424 423 422 421 420 419 418 417=
416 415 414 413 412 411 410 409 408 407 406 405 404 403 402 401 400 399 39=
8 397 396 395 394 393 392 391 390 389 388 387 386 385 384 383 382 381 380 3=
79 378 377 376 375 374 373 372 371 370 369 368 367 366 365 364 363 362 361 =
360 359 358 357 356 355 354 353 352 351 350 349 348 347 346 345 344 343 342=
341 340 339 338 337 336 335 334 333 332 331 330 329 328 327 326 325 324 32=
3 322 321 320 319 318 317 316 315 314 313 312 311 310 309 308 307 306 305 3=
04 303 302 301 300 299 298 297 296 295 294 293 292 291 290 289 288 287 286 =
285 284 283 282 281 280 279 278 277 276 275 274 273 272 271 270 269 268 267=
266 265 264 263 262 261 260 259 258 257 256 255 254 253 252 251 250 249 24=
8 247 246 245 244 243 242 241 240 239 238 237 236 235 234 233 232 231 230 2=
29 228 227 226 225 224 223 222 221 220 219 218 217 216 215 214 213 212 211 =
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 17=
3 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 1=
54 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 =
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
---
#0 dumpsys () at ../../kern/kern_shutdown.c:487
487 if (dumping++) {
(kgdb) bt
#0 dumpsys () at ../../kern/kern_shutdown.c:487
#1 0xc01b1554 in boot (howto=3D260) at ../../kern/kern_shutdown.c:316
#2 0xc01b19a1 in panic (fmt=3D0xc03510e4 "from debugger") at ../../kern/ke=
rn_shutdown.c:595
#3 0xc013d1b1 in db_panic (addr=3D-1070477807, have_addr=3D0, count=3D-1, =
modif=3D0xc040074c "") at ../../ddb/db_command.c:435
#4 0xc013d14f in db_command (last_cmdp=3D0xc03a8f64, cmd_table=3D0xc03a8da=
4, aux_cmd_tablep=3D0xc03d9618) at ../../ddb/db_command.c:333
#5 0xc013d216 in db_command_loop () at ../../ddb/db_command.c:457
#6 0xc013f3c7 in db_trap (type=3D3, code=3D0) at ../../ddb/db_trap.c:71
#7 0xc031cbb0 in kdb_trap (type=3D3, code=3D0, regs=3D0xc0400854) at ../..=
/i386/i386/db_interface.c:158
#8 0xc032bee0 in trap (frame=3D{tf_fs =3D 912654360, tf_es =3D 808648720, =
tf_ds =3D 16, tf_edi =3D 0, tf_esi =3D 256, tf_ebp =3D -1069545316, tf_isp =
=3D -1069545344, tf_ebx =3D -1069958749,
tf_edx =3D -1069968593, tf_ecx =3D 1021, tf_eax =3D 18, tf_trapno =3D=
3, tf_err =3D 0, tf_eip =3D -1070477807, tf_cs =3D 8, tf_eflags =3D 16454,=
tf_esp =3D -1069968609,
tf_ss =3D -1070158597}) at ../../i386/i386/trap.c:584
#9 0xc031ce11 in Debugger (msg=3D0xc036acfb "panic") at machine/cpufunc.h:=
67
#10 0xc01b1998 in panic (fmt=3D0xc039b9a3 "double fault") at ../../kern/ker=
n_shutdown.c:593
#11 0xc032c5eb in dblfault_handler () at ../../i386/i386/trap.c:996
(kgdb)
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