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Date:      Thu, 21 Oct 2010 12:08:23 -0700
From:      Randy Bush <randy@psg.com>
To:        stable <stable@freebsd.org>
Subject:   repeating crashes with 8.1
Message-ID:  <m2y69rcqjc.wl%randy@psg.com>
References:  <m2zku7cqt5.wl%randy@psg.com>

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FreeBSD 8.1-STABLE #2: Thu Oct 21 15:30:45 UTC 2010
    root@rip.psg.com:/usr/obj/usr/src/sys/RIP amd64

console recording

em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
em0: discard frame w/o packet header
panic: sbflush_internal: cc 4294965301 || mb 0 || mbcnt 0
cpuid = 0
panic: bufwrite: buffer is not busy???


cpuid = 0
Fatal trap 12: page fault while in kernel mode
Uptime: cpuid = 2; 48mapic id = 02
36s
fault virtual address   = 0xffff804000000000
Physical memory: 4086 MB
fault code              = supervisor read data, page not present
Dumping 1647 MB:instruction pointer     = 0x20:0xffffffff804c22ae
 (CTRL-C to abort) stack pointer                = 0x28:0xffffff80000de9a0
frame pointer           = 0x28:0xffffff80000de9b0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 0 (em0 taskq)
trap number             = 12
 1632 1616 1600 1584 1568 1552 1536 1520 1504 1488 1472 1456 1440 1424 1408 1392 1376 1360 1344 1328 1312 1296 1280 1264 1248 1232 1216 1200 1184 1168 1152 1136 1120 1104 1088 1072 1056 1040 1024 1008 992 976 960 944 928 912 896 880 864 848 832 816 800 784 768 752 736 720 704 688 672 656 640 624 608 592 576 560 544 528 512 496 480 464 448 432 416 400 384 368 352 336 320 304 288 272 256 240 224 208 192 176 160 144 128 112 96 80 64 48 32 16Attempt to write outside dump device boundaries.

** DUMP FAILED (ERROR 6) **
Automatic reboot in 15 seconds - press a key on the console to abort
em0: Watchdog timeout -- resetting

and locked up.  required power cycle to reboot

randy



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