Date: Thu, 12 Jul 2001 08:48:35 -0700 From: "Bruce A. Mah" <bmah@FreeBSD.ORG> To: John Hay <jhay@icomtek.csir.co.za> Cc: itojun@iijlab.net, sdegler@degler.net (Stephen Degler), freebsd-net@FreeBSD.ORG Subject: Re: IPV6 panic? Message-ID: <200107121548.f6CFmZF15294@intruder.bmah.org> In-Reply-To: <200107121019.f6CAJqI85911@zibbi.icomtek.csir.co.za> References: <200107121019.f6CAJqI85911@zibbi.icomtek.csir.co.za>
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If memory serves me right, John Hay wrote:
> > >> I have had several of these since 6/30, after I cvsup'ed
> > >> and rebuilt everything. I have been updating fairly frequently,
> > >> but the problem seems to persist.
> >
> > when does it happen? like,
> > - removal of pcmcia card
> > - some specific command/activity
> > - seeing certain packet
> > - not related to command/activity, looks like some sort of timer issue
> > - whatever
>
> Up to now it has been at night when I'm not there. :-) I have enabled
> saving of the kernel crashdump, so hopefully I'll catch it next time.
I've seen something like this as well (4-STABLE from 7 July). For me,
this happens in the middle of the day, when I'm at work (this is one of
my home systems). I have a crashdump, but no debugging symbols. :-(
Having just realized this, I'm turning them on for my kernel builds.
My last crashdump has a tombstone that looks like this:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x3f
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01fc074
stack pointer = 0x10:0xce06ff60
frame pointer = 0x10:0xce06ff78
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 = 373 (setiathome)
interrupt mask =
trap number = 12
panic: page fault
syncing disks... 13 2
done
Uptime: 1d0h9m41s
dumping to dev #da/0x30001, offset 786456
dump 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 8
5 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 0xc017a892 in dumpsys ()
(kgdb) where
#0 0xc017a892 in dumpsys ()
#1 0xc017a6b3 in boot ()
#2 0xc017aa30 in poweroff_wait ()
#3 0xc0308991 in trap_fatal ()
#4 0xc0308669 in trap_pfault ()
#5 0xc0308223 in trap ()
#6 0xc01fc074 in nd6_timer ()
#7 0xc01802c9 in softclock ()
#8 0xc02fc1af in doreti_swi ()
#9 0x3263 in ?? ()
#10 0xef9b in ?? ()
#11 0x138fe in ?? ()
#12 0x13a25 in ?? ()
#13 0x2abb in ?? ()
#14 0x107e in ?? ()
Will give more info if/when I get it.
Bruce.
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