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I was using version 1.6.1_RC1 in the server that was on 24hrs without problems, until I recompiled kernel with support usb to make use of one webcam that he takes off photo of a room in 1 and 1 minute, soon after it started these errors of UVM. the problem that the server arrives to be on during some days and suddenly happens the error.
I still did not test to disable usb support in kernel.

Was using version 1.6.1_RC1 and of the same type of problem:

Syslog (1.6.1_RC1):

uvm_fault(0xe3a6b75c, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 eip c012c53b cs 8 eflags 10207 cr2 8 cpl c0000000
panic: trap
syncing disks...

Syslog (1.6.1_RC3):

Mar 29 19:51:50 xxxx /netbsd: uvm_fault(0xe41810e0, 0x0, 0, 1) -> e
Mar 29 19:51:50 xxxx /netbsd: fatal page fault in supervisor mode
Mar 29 19:51:50 xxxx /netbsd: trap type 6 code 0 eip c011cc8f cs 8 eflags 10207 cr2 8 cpl c0000000
Mar 29 19:51:50 xxxx /netbsd: panic: trap
Mar 29 19:51:50 xxxx /netbsd: syncing disks... 2 2 2 2 2 2 2 2 done
Mar 29 19:51:50 xxxx /netbsd:
Mar 29 19:51:50 xxxx /netbsd: dumping to dev 4,1 offset 1731
Mar 29 19:51:50 xxxx /netbsd: dump 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 4
71 470 469 468 467 466 465 464 463 462 461 460 459 458 457 456 455 454 453 452 451 450 449 448 447
 446 445 444 443 442 441 440 439 438 437 436 435 434 433 432 431 430 429 428 427 426 425 424 423 4
22 421 420 419 418 417 416 415 414 413 412 411 410 409 408 407 406 405 404 403 402 401 400 399 398
 397 396 395 394 393 392 391 390 389 388 387 386 385 384 383 382 381 380 379 378 377 376 375 374 3
73 372 371 370 369 368 367 366 365 364 363 362 361 360 359 358 357 356 355 354 353 352 351 350 349
 348 347 346 345 344 343 342 341 340 339 338 337 336 335 334 333 332 331 330 329 328 327 326 325 3
24 323 322 321 320 319 318 317 316 315 314 313 312 311 310 309 308 307 306 305 304 303 302 301 300
 299 298 297 296 295 294 293 292 291 290 289 288 287 286 285 284 283 282 281 280 279 278 277 276 2
75 274 273 272 271 270 269 268 267 266 265 264 263 262 261 260 25
Mar 29 19:51:50 xxxx /netbsd:  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 2
17 216 215 214 213 212 211 210 209 208 207 206 205 204 203 202 201 200 199 198 197 196 195 194 193
 192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 1
68 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144
 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 1
19 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 9
3 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 succeeded
Mar 29 19:51:50 xxxx /netbsd:
Mar 29 19:51:50 xxxx /netbsd:
Mar 29 19:51:50 xxxx /netbsd: rebooting...

Dmesg (1.6.1_RC3):

NetBSD 1.6.1_RC3 (xxxx) #2: Fri Mar 28 12:53:15 EST 2003
    root@xxxx:/usr/src/sys/arch/i386/compile/XXXX
cpu0: Intel Pentium 4 (686-class), 1794.67 MHz
cpu0: D-cache 8 KB 64b/line 4-way
cpu0: L2 cache 512 KB 64b/line 8-way
cpu0: features 3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features 3febfbff<PGE,MCA,CMOV,FGPAT,PSE36,CFLUSH,DS,ACPI,MMX>
cpu0: features 3febfbff<FXSR,SSE,SSE2,SS,HTT,TM>
total memory = 511 MB
avail memory = 395 MB
using 6144 buffers containing 102 MB of memory
BIOS32 rev. 0 found at 0xfda74
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: Intel 82850 Host (rev. 0x04)
pchb0: random number generator enabled
agp0 at pchb0: aperture at 0xf8000000, size 0x4000000
ppb0 at pci0 dev 1 function 0: Intel 82850/82860 AGP (rev. 0x04)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
vga0 at pci1 dev 0 function 0: Nvidia Corporation product 0x0111 (rev. 0xb2)
wsdisplay0 at vga0 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
ppb1 at pci0 dev 30 function 0: Intel 82801BA Hub-to-PCI Bridge (rev. 0x04)
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled
ahc0 at pci2 dev 9 function 0
ahc0: interrupting at irq 9
ahc0: aic7892 Wide Channel A, SCSI Id=7, 16/255 SCBs
scsibus0 at ahc0: 16 targets, 8 luns per target
ex0 at pci2 dev 10 function 0: 3Com 3c905C-TX 10/100 Ethernet with mngmt (rev. 0x78)
ex0: interrupting at irq 11
ex0: MAC address 00:04:xx:xx:xx:xx
exphy0 at ex0 phy 24: 3Com internal media interface
exphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rtk0 at pci2 dev 11 function 0: RealTek 8139 10/100BaseTX
rtk0: interrupting at irq 10
rtk0: Ethernet address 00:50:xx:xx:xx:xx
ukphy0 at rtk0 phy 7: Generic IEEE 802.3u media interface
ukphy0: OUI 0x000000, model 0x0000, rev. 0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pcib0 at pci0 dev 31 function 0
pcib0: Intel 82801BA LPC Interface Bridge (rev. 0x04)
pciide0 at pci0 dev 31 function 1: Intel 82801BA IDE Controller (ICH2) (rev. 0x04)
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
wd0 at pciide0 channel 0 drive 0: <MAXTOR 6L040J2>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 38172 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 78177792 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
pciide0: primary channel interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
pciide0: secondary channel wired to compatibility mode
pciide0: secondary channel ignored (disabled)
uhci0 at pci0 dev 31 function 2: Intel 82801BA USB Controller (rev. 0x04)
uhci0: interrupting at irq 12
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
Intel 82801BA SMBus Controller (SMBus serial bus, revision 0x04) at pci0 dev 31 function 3 not co$
uhci1 at pci0 dev 31 function 4: Intel 82801BA USB Controller (rev. 0x04)
uhci1: interrupting at irq 10
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
apm0 at mainbus0: Power Management spec V1.2
biomask f7e5 netmask ffe5 ttymask ffe7
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 6 lun 0: <QUANTUM, ATLAS10K2-TY367L, DDD6> SCSI3 0/direct fixed
sd0: 35020 MB, 17338 cyl, 10 head, 413 sec, 512 bytes/sect x 71721820 sectors
sd0: sync (25.0ns offset 127), 16-bit (80.000MB/s) transfers, tagged queueing
uhub2 at uhub1 port 2
uhub2: vendor 0x0424 product 0x0140, class 9/0, rev 1.10/0.00, addr 2
ugen0 at uhub0 port 1
ugen0: vendor 0x05a9 product 0xa511, rev 1.00/1.00, addr 2
boot device: sd0
root on sd0a dumps on sd0b
root file system type: ffs

Any idea ??

Daniel Dias Gonçalves
f22@netbsd.com.br

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	<TD class='mybody'>I was using version 1.6.1_RC1 in the server that was on 24hrs without problems, until I recompiled kernel with support usb to make use of one webcam that he takes off photo of a room in 1 and 1 minute, soon after it started these errors of UVM. the problem that the server arrives to be on during some days and suddenly happens the error.
<BR>
I still did not test to disable usb support in kernel.
<BR>

<BR>
Was using version 1.6.1_RC1 and of the same type of problem:
<BR>

<BR>
Syslog (1.6.1_RC1):
<BR>

<BR>
uvm_fault(0xe3a6b75c, 0x0, 0, 1) -</FONT><FONT color=#444444>> e
<BR>
fatal page fault in supervisor mode
<BR>
trap type 6 code 0 eip c012c53b cs 8 eflags 10207 cr2 8 cpl c0000000
<BR>
panic: trap
<BR>
syncing disks...
<BR>

<BR>
Syslog (1.6.1_RC3):
<BR>

<BR>
Mar 29 19:51:50 xxxx /netbsd: uvm_fault(0xe41810e0, 0x0, 0, 1) -</FONT><FONT color=#444444>> e
<BR>
Mar 29 19:51:50 xxxx /netbsd: fatal page fault in supervisor mode
<BR>
Mar 29 19:51:50 xxxx /netbsd: trap type 6 code 0 eip c011cc8f cs 8 eflags 10207 cr2 8 cpl c0000000
<BR>
Mar 29 19:51:50 xxxx /netbsd: panic: trap
<BR>
Mar 29 19:51:50 xxxx /netbsd: syncing disks... 2 2 2 2 2 2 2 2 done
<BR>
Mar 29 19:51:50 xxxx /netbsd:
<BR>
Mar 29 19:51:50 xxxx /netbsd: dumping to dev 4,1 offset 1731
<BR>
Mar 29 19:51:50 xxxx /netbsd: dump 511 510 509 508 507 506 505 504 503 502 501 500 499 498 497 496
<BR>
 495 494 493 492 491 490 489 488 487 486 485 484 483 482 481 480 479 478 477 476 475 474 473 472 4
<BR>
71 470 469 468 467 466 465 464 463 462 461 460 459 458 457 456 455 454 453 452 451 450 449 448 447
<BR>
 446 445 444 443 442 441 440 439 438 437 436 435 434 433 432 431 430 429 428 427 426 425 424 423 4
<BR>
22 421 420 419 418 417 416 415 414 413 412 411 410 409 408 407 406 405 404 403 402 401 400 399 398
<BR>
 397 396 395 394 393 392 391 390 389 388 387 386 385 384 383 382 381 380 379 378 377 376 375 374 3
<BR>
73 372 371 370 369 368 367 366 365 364 363 362 361 360 359 358 357 356 355 354 353 352 351 350 349
<BR>
 348 347 346 345 344 343 342 341 340 339 338 337 336 335 334 333 332 331 330 329 328 327 326 325 3
<BR>
24 323 322 321 320 319 318 317 316 315 314 313 312 311 310 309 308 307 306 305 304 303 302 301 300
<BR>
 299 298 297 296 295 294 293 292 291 290 289 288 287 286 285 284 283 282 281 280 279 278 277 276 2
<BR>
75 274 273 272 271 270 269 268 267 266 265 264 263 262 261 260 25
<BR>
Mar 29 19:51:50 xxxx /netbsd:  258 257 256 255 254 253 252 251 250 249 248 247 246 245 244 243 242
<BR>
 241 240 239 238 237 236 235 234 233 232 231 230 229 228 227 226 225 224 223 222 221 220 219 218 2
<BR>
17 216 215 214 213 212 211 210 209 208 207 206 205 204 203 202 201 200 199 198 197 196 195 194 193
<BR>
 192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 1
<BR>
68 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144
<BR>
 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 1
<BR>
19 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 9
<BR>
3 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
<BR>
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
<BR>
 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 succeeded
<BR>
Mar 29 19:51:50 xxxx /netbsd:
<BR>
Mar 29 19:51:50 xxxx /netbsd:
<BR>
Mar 29 19:51:50 xxxx /netbsd: rebooting...
<BR>

<BR>
Dmesg (1.6.1_RC3):
<BR>

<BR>
NetBSD 1.6.1_RC3 (xxxx) #2: Fri Mar 28 12:53:15 EST 2003
<BR>
    root@xxxx:/usr/src/sys/arch/i386/compile/XXXX
<BR>
cpu0: Intel Pentium 4 (686-class), 1794.67 MHz
<BR>
cpu0: D-cache 8 KB 64b/line 4-way
<BR>
cpu0: L2 cache 512 KB 64b/line 8-way
<BR>
cpu0: features 3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
<BR>
cpu0: features 3febfbff<PGE,MCA,CMOV,FGPAT,PSE36,CFLUSH,DS,ACPI,MMX>
<BR>
cpu0: features 3febfbff<FXSR,SSE,SSE2,SS,HTT,TM>
<BR>
total memory = 511 MB
<BR>
avail memory = 395 MB
<BR>
using 6144 buffers containing 102 MB of memory
<BR>
BIOS32 rev. 0 found at 0xfda74
<BR>
mainbus0 (root)
<BR>
pci0 at mainbus0 bus 0: configuration mode 1
<BR>
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
<BR>
pchb0 at pci0 dev 0 function 0
<BR>
pchb0: Intel 82850 Host (rev. 0x04)
<BR>
pchb0: random number generator enabled
<BR>
agp0 at pchb0: aperture at 0xf8000000, size 0x4000000
<BR>
ppb0 at pci0 dev 1 function 0: Intel 82850/82860 AGP (rev. 0x04)
<BR>
pci1 at ppb0 bus 1
<BR>
pci1: i/o space, memory space enabled
<BR>
vga0 at pci1 dev 0 function 0: Nvidia Corporation product 0x0111 (rev. 0xb2)
<BR>
wsdisplay0 at vga0 kbdmux 1: console (80x25, vt100 emulation)
<BR>
wsmux1: connecting to wsdisplay0
<BR>
ppb1 at pci0 dev 30 function 0: Intel 82801BA Hub-to-PCI Bridge (rev. 0x04)
<BR>
pci2 at ppb1 bus 2
<BR>
pci2: i/o space, memory space enabled
<BR>
ahc0 at pci2 dev 9 function 0
<BR>
ahc0: interrupting at irq 9
<BR>
ahc0: aic7892 Wide Channel A, SCSI Id=7, 16/255 SCBs
<BR>
scsibus0 at ahc0: 16 targets, 8 luns per target
<BR>
ex0 at pci2 dev 10 function 0: 3Com 3c905C-TX 10/100 Ethernet with mngmt (rev. 0x78)
<BR>
ex0: interrupting at irq 11
<BR>
ex0: MAC address 00:04:xx:xx:xx:xx
<BR>
exphy0 at ex0 phy 24: 3Com internal media interface
<BR>
exphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
<BR>
rtk0 at pci2 dev 11 function 0: RealTek 8139 10/100BaseTX
<BR>
rtk0: interrupting at irq 10
<BR>
rtk0: Ethernet address 00:50:xx:xx:xx:xx
<BR>
ukphy0 at rtk0 phy 7: Generic IEEE 802.3u media interface
<BR>
ukphy0: OUI 0x000000, model 0x0000, rev. 0
<BR>
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
<BR>
pcib0 at pci0 dev 31 function 0
<BR>
pcib0: Intel 82801BA LPC Interface Bridge (rev. 0x04)
<BR>
pciide0 at pci0 dev 31 function 1: Intel 82801BA IDE Controller (ICH2) (rev. 0x04)
<BR>
pciide0: bus-master DMA support present
<BR>
pciide0: primary channel wired to compatibility mode
<BR>
wd0 at pciide0 channel 0 drive 0: <MAXTOR 6L040J2>
<BR>
wd0: drive supports 16-sector PIO transfers, LBA addressing
<BR>
wd0: 38172 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 78177792 sectors
<BR>
wd0: 32-bit data port
<BR>
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
<BR>
pciide0: primary channel interrupting at irq 14
<BR>
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
<BR>
pciide0: secondary channel wired to compatibility mode
<BR>
pciide0: secondary channel ignored (disabled)
<BR>
uhci0 at pci0 dev 31 function 2: Intel 82801BA USB Controller (rev. 0x04)
<BR>
uhci0: interrupting at irq 12
<BR>
usb0 at uhci0: USB revision 1.0
<BR>
uhub0 at usb0
<BR>
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
<BR>
uhub0: 2 ports with 2 removable, self powered
<BR>
Intel 82801BA SMBus Controller (SMBus serial bus, revision 0x04) at pci0 dev 31 function 3 not co$
<BR>
uhci1 at pci0 dev 31 function 4: Intel 82801BA USB Controller (rev. 0x04)
<BR>
uhci1: interrupting at irq 10
<BR>
usb1 at uhci1: USB revision 1.0
<BR>
uhub1 at usb1
<BR>
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
<BR>
uhub1: 2 ports with 2 removable, self powered
<BR>
isa0 at pcib0
<BR>
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
<BR>
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
<BR>
pckbc0 at isa0 port 0x60-0x64
<BR>
pckbd0 at pckbc0 (kbd slot)
<BR>
pckbc0: using irq 1 for kbd slot
<BR>
wskbd0 at pckbd0: console keyboard, using wsdisplay0
<BR>
pcppi0 at isa0 port 0x61
<BR>
sysbeep0 at pcppi0
<BR>
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
<BR>
npx0 at isa0 port 0xf0-0xff: using exception 16
<BR>
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
<BR>
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
<BR>
isapnp0: no ISA Plug 'n Play devices found
<BR>
apm0 at mainbus0: Power Management spec V1.2
<BR>
biomask f7e5 netmask ffe5 ttymask ffe7
<BR>
scsibus0: waiting 2 seconds for devices to settle...
<BR>
sd0 at scsibus0 target 6 lun 0: <QUANTUM, ATLAS10K2-TY367L, DDD6</FONT><FONT color=#444444>> SCSI3 0/direct fixed
<BR>
sd0: 35020 MB, 17338 cyl, 10 head, 413 sec, 512 bytes/sect x 71721820 sectors
<BR>
sd0: sync (25.0ns offset 127), 16-bit (80.000MB/s) transfers, tagged queueing
<BR>
uhub2 at uhub1 port 2
<BR>
uhub2: vendor 0x0424 product 0x0140, class 9/0, rev 1.10/0.00, addr 2
<BR>
ugen0 at uhub0 port 1
<BR>
ugen0: vendor 0x05a9 product 0xa511, rev 1.00/1.00, addr 2
<BR>
boot device: sd0
<BR>
root on sd0a dumps on sd0b
<BR>
root file system type: ffs
<BR>

<BR>
Any idea ??
<BR>

<BR>
Daniel Dias Gonçalves
<BR>
<A href=mailto:f22@netbsd.com.br>f22@netbsd.com.br</A></TD>
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