From owner-freebsd-fs Mon Mar 18 1: 2:58 2002 Delivered-To: freebsd-fs@freebsd.org Received: from obsecurity.dyndns.org (adsl-64-165-226-239.dsl.lsan03.pacbell.net [64.165.226.239]) by hub.freebsd.org (Postfix) with ESMTP id 5A64D37B416; Mon, 18 Mar 2002 01:02:46 -0800 (PST) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id BD80366C39; Mon, 18 Mar 2002 01:02:45 -0800 (PST) Date: Mon, 18 Mar 2002 01:02:45 -0800 From: Kris Kennaway To: Alfred Perlstein Cc: Dag-Erling Smorgrav , Kris Kennaway , current@freebsd.org, fs@freebsd.org Subject: Re: panic: bwrite: buffer is not busy??? Message-ID: <20020318010245.A48956@xor.obsecurity.org> References: <20020317124958.A34008@xor.obsecurity.org> <20020318061739.GB894@elvis.mu.org> <20020318071623.GD894@elvis.mu.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="RnlQjJ0d97Da+TV1" Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020318071623.GD894@elvis.mu.org>; from alfred@freebsd.org on Sun, Mar 17, 2002 at 11:16:23PM -0800 Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org --RnlQjJ0d97Da+TV1 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Mar 17, 2002 at 11:16:23PM -0800, Alfred Perlstein wrote: > * Dag-Erling Smorgrav [020317 22:55] wrote: > > Alfred Perlstein writes: > > > Please let me know if this works for you. > > > [...] > > > + PROC_LOCK(td); > >=20 > > *cough* *cough* > >=20 > > :) >=20 > It was untested. :) I'm sure you can fix it, I've got to get some > sleep, let me know if it works for you. With the corrected version of that patch (and a patch from Tor to fix VM deadlocks in green's commit) I got this panic. DES has been taking a look at it, but I'm sending it here in case anyone else has insight too. Kris panic messages: --- Fatal trap 12: page fault while in kernel mode fault virtual address =3D 0x48 fault code =3D supervisor write, page not present instruction pointer =3D 0x8:0xc01f833c stack pointer =3D 0x10:0xda1a8b4c frame pointer =3D 0x10:0xda1a8b74 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 92729 (tail) trap number =3D 12 panic: page fault syncing disks... panic: bwrite: buffer is not busy??? Uptime: 27m34s dumping to dev ad0b, 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:505 505 ../../../kern/kern_shutdown.c: No such file or directory. b(kgdb) bt #0 dumpsys () at ../../../kern/kern_shutdown.c:505 #1 0xc020d4b4 in boot (howto=3D260) at ../../../kern/kern_shutdown.c:337 #2 0xc020d953 in panic (fmt=3D0xc0376d4b "bwrite: buffer is not busy???") at ../../../kern/kern_shutdown.c:647 #3 0xc0242c3b in bwrite (bp=3D0xce63eb88) at ../../../kern/vfs_bio.c:747 #4 0xc024404a in vfs_bio_awrite (bp=3D0xce63eb88) at ../../../kern/vfs_bio= .c:1606 #5 0xc01e49e8 in spec_fsync (ap=3D0xda1a8a08) at ../../../fs/specfs/spec_v= nops.c:403 #6 0xc01e45a5 in spec_vnoperate (ap=3D0xda1a8a08) at ../../../fs/specfs/sp= ec_vnops.c:121 #7 0xc02e818c in ffs_sync (mp=3D0xc4061400, waitfor=3D2, cred=3D0xc145a980= , td=3D0xc03b3000) at vnode_if.h:441 #8 0xc02505e9 in sync (td=3D0xc03b3000, uap=3D0x0) at ../../../kern/vfs_sy= scalls.c:673 #9 0xc020d100 in boot (howto=3D256) at ../../../kern/kern_shutdown.c:246 #10 0xc020d953 in panic (fmt=3D0xc039501e "%s") at ../../../kern/kern_shutd= own.c:647 #11 0xc03335d0 in trap_fatal (frame=3D0xda1a8b0c, eva=3D72) at ../../../i38= 6/i386/trap.c:851 #12 0xc03332f9 in trap_pfault (frame=3D0xda1a8b0c, usermode=3D0, eva=3D72) = at ../../../i386/i386/trap.c:765 #13 0xc0332d83 in trap (frame=3D{tf_fs =3D -1001521128, tf_es =3D -10696785= 76, tf_ds =3D -635830256, tf_edi =3D -1001489664, tf_esi =3D 0, tf_ebp =3D -635794572, tf_isp = =3D -635794632, tf_ebx =3D -1002099200, tf_edx =3D 4, tf_ecx =3D -636822144, tf_eax = =3D 4, tf_trapno =3D 12, tf_err =3D 2, tf_eip =3D -1071676612, tf_cs =3D 8, tf_eflags =3D 66194, tf_esp =3D = -1002099200, tf_ss =3D 4}) at ../../../i386/i386/trap.c:433 #14 0xc01f833c in kqueue_close (fp=3D0xc4452e00, td=3D0xda0add80) at machin= e/atomic.h:139 #15 0xc01f67b6 in fdrop_locked (fp=3D0xc4452e00, td=3D0xda0add80) at ../../= ../sys/file.h:230 #16 0xc01f5c9e in fdrop (fp=3D0xc4452e00, td=3D0xda0add80) at ../../../kern= /kern_descrip.c:1545 #17 0xc01f5c4c in closef (fp=3D0xc4452e00, td=3D0xda0add80) at ../../../ker= n/kern_descrip.c:1531 #18 0xc01f5729 in fdfree (td=3D0xda0add80) at ../../../kern/kern_descrip.c:= 1352 #19 0xc01fa4fd in exit1 (td=3D0xda0add80, rv=3D15) at ../../../kern/kern_ex= it.c:199 #20 0xc0211157 in sigexit (td=3D0xda0add80, sig=3D15) at ../../../kern/kern= _sig.c:1856 #21 0xc0210dc8 in postsig (sig=3D15) at ../../../kern/kern_sig.c:1748 #22 0xc0226fe6 in userret (td=3D0xda0add80, frame=3D0xda1a8d48, oticks=3D1)= at ../../../kern/subr_trap.c:78 #23 0xc0333934 in syscall (frame=3D{tf_fs =3D 47, tf_es =3D 47, tf_ds =3D 4= 7, tf_edi =3D 1, tf_esi =3D 0, tf_ebp =3D -1077938360, tf_isp =3D -635794060, tf_ebx =3D 1, tf_edx = =3D 4, tf_ecx =3D 672242496, tf_eax =3D 4, tf_trapno =3D 12, tf_err =3D 2, tf_eip =3D 671769507, t= f_cs =3D 31, tf_eflags =3D 583, tf_esp =3D -1077938580, tf_ss =3D 47}) at ../../../i386/i386/trap.c:1= 093 #24 0xc0324e4d in syscall_with_err_pushed () #25 0x804a283 in ?? () #26 0x8048bdd in ?? () (kgdb) --RnlQjJ0d97Da+TV1 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE8la01Wry0BWjoQKURAj0OAJ9zQKotOKSYRKRb9061w57DDXzVBgCgjVMq M4i9es397ekD9QT6hdsEnKI= =5N36 -----END PGP SIGNATURE----- --RnlQjJ0d97Da+TV1-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message