4.8-stable kernel panic

Mon Aug 18 19:18:03 PDT 2003

Hi,

It appears that the kernel panics at the time of high network activity. I
was ble to reproduce it on my machine using this shell script:
-- cut here --
#!/bin/sh
# test IPAddr
IPADDR=192.168.0.254
while :; do
  ping -f -s 65467 IPADDR &
  ping -f -s 65467 IPADDR &
done
-- cut here --
Basicly two or more network intensive processes need to be run at the same
time.

The small gdb typescript is included:

-- cut here --
Script started on Mon Aug 18 22:11:05 2003

 [root]@nix^ \:/var/crash\ # gdb -k kernel.debug.1 vmcore.3

GNU gdb 4.18 (FreeBSD)

GDB is free software, covered by the GNU General Public License, and you are

welcome to change it and/or distribute copies of it under certain conditions.

Type "show copying" to see the conditions.

There is absolutely no warranty for GDB.  Type "show warranty" for details.

This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read
called at
/usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
line 2627 in elfstab_build_psymtabs

Deprecated bfd_read called at
/usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
line 933 in fill_symbuf

IdlePTD at phsyical address 0x00401000

initial pcb at physical address 0x003507c0

panicstr: page fault

panic messages:

---

Fatal trap 12: page fault while in kernel mode

fault virtual address	= 0xc

fault code		= supervisor read, page not present

instruction pointer	= 0x8:0xc0187709

stack pointer	        = 0x10:0xd77bbc9c

frame pointer	        = 0x10:0xd77bbca8

code segment		= base 0x0, limit 0xfffff, type 0x1b

			= DPL 0, pres 1, def32 1, gran 1

processor eflags	= interrupt enabled, resume, IOPL = 0

current process		= 379 (ping)

interrupt mask		=

trap number		= 12

panic: page fault

syncing disks...

done

Uptime: 1m7s

dumping to dev #ad/0x50001, offset 1048608

dump ata0: resetting devices .. done

511 510 509 508 507 506 505 504 503 502 501 500 499 498 497 496 495 494
493 492 491 490 489 488 487 486 485 484 483 482 481 480 479 478 477 476
475 474 473 472 471 470 469 468 467 466 465 464 463 462 461 460 459 458
457 456 455 454 453 452 451 450 449 448 447 446 445 444 443 442 441 440
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
403 402 401 400 399 398 397 396 395 394 393 392 391 390 389 388 387 386
385 384 383 382 381 380 379 378 377 376 375 374 373 372 371 370 369 368
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
331 330 329 328 327 326 325 324 323 322 321 320 319 318 317 316 315 314
313 312 311 310 309 308 307 306 305 304 303 302 301 300 299 298 297 296
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
259 258 257 256 255 254 253 252 251 250 249 248 247 246 245 244 243 242
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

---

#0  dumpsys () at ../../kern/kern_shutdown.c:487

487		if (dumping++) {

(kgdb) bt

#0  dumpsys () at ../../kern/kern_shutdown.c:487

#1  0xc016a93b in boot (howto=256) at ../../kern/kern_shutdown.c:316

#2  0xc016ad79 in panic (fmt=0xc0301f8c "%s") at
../../kern/kern_shutdown.c:595

#3  0xc02ac06b in trap_fatal (frame=0xd77bbc5c, eva=12) at
../../i386/i386/trap.c:974

#4  0xc02abd19 in trap_pfault (frame=0xd77bbc5c, usermode=0, eva=12) at
../../i386/i386/trap.c:867

#5  0xc02ab893 in trap (frame={tf_fs = -1050542064, tf_es = -679804912,
tf_ds = -1071906800, tf_edi = 2048, tf_esi = 0, tf_ebp = -679756632,

      tf_isp = -679756664, tf_ebx = 2048, tf_edx = 0, tf_ecx =
-1051824128, tf_eax = 28638, tf_trapno = 12, tf_err = 0, tf_eip =
-1072138487,

      tf_cs = 8, tf_eflags = 66054, tf_esp = 2048, tf_ss = -1051338496})
at ../../i386/i386/trap.c:466

#6  0xc0187709 in m_copydata (m=0xc155d900, off=28672, len=2048,
cp=0xc14e7000 "") at ../../kern/uipc_mbuf.c:984

#7  0xc018860e in m_defrag (m0=0xc155d900, how=1) at
../../kern/uipc_mbuf.c:1572

#8  0xc021e610 in dc_encap (sc=0xc21c2000, m_head=0xc155d900,
txidx=0xd77bbd14) at ../../pci/if_dc.c:3005

#9  0xc021e852 in dc_start (ifp=0xc21c2000) at ../../pci/if_dc.c:3104

#10 0xc021e5a9 in dc_intr (arg=0xc21c2000) at ../../pci/if_dc.c:2969

#11 0xc02b42d1 in intr_mux (arg=0xc144d3a0) at
../../i386/isa/intr_machdep.c:582

#12 0xc029db2e in vec9 ()

#13 0xc029da43 in doreti_swi ()

#14 0xc0189bb0 in sosend (so=0xd5ca1a00, addr=0xc21dd300, uio=0xd77bbecc,
top=0xc156a000, control=0x0, flags=0, p=0xd7750700)

    at ../../kern/uipc_socket.c:583

#15 0xc018d0f3 in sendit (p=0xd7750700, s=3, mp=0xd77bbf0c, flags=0) at
../../kern/uipc_syscalls.c:590

#16 0xc018d1f6 in sendto (p=0xd7750700, uap=0xd77bbf80) at
../../kern/uipc_syscalls.c:643

#17 0xc02ac321 in syscall2 (frame={tf_fs = 47, tf_es = 134742063, tf_ds =
-1078067153, tf_edi = 1, tf_esi = 134753312, tf_ebp = -1078003424,

      tf_isp = -679755820, tf_ebx = 65475, tf_edx = 16417, tf_ecx =
134818786, tf_eax = 133, tf_trapno = 0, tf_err = 2, tf_eip =
134530472,

      tf_cs = 31, tf_eflags = 663, tf_esp = -1078003500, tf_ss = 47}) at
../../i386/i386/trap.c:1175

#18 0xc029c625 in Xint0x80_syscall ()

#19 0x80492e1 in ?? ()

#20 0x804813e in ?? ()

(kgdb) up 6

#6  0xc0187709 in m_copydata (m=0xc155d900, off=28672, len=2048,
cp=0xc14e7000 "") at ../../kern/uipc_mbuf.c:984

984		}

(kgdb) quit

Script done on Mon Aug 18 22:11:30 2003
-- cut here --

uname -a output is as follows:
FreeBSD nix.lab.net 4.8-STABLE FreeBSD 4.8-STABLE #0: Mon Aug 18 20:04:33
EDT 2003     root at nix.lab.net:/usr/src/sys/compile/system  i386

If you need more information, you can email me.

Later,