panic info

[Antoine Pelisse]

On 1/9/06, David Reid <david at jetnet.co.uk> wrote:
>
> These are the details of the most recent panic from my desktop amd64
> machine. This happens less frequently than it used to (about every 36
> hours now compared with every 12 before) and always seems to involve the
> same functions.
>
> GDB still doesn't seem to want to play, but I've enclosed the tr output
> as was suggested.
>
> Any suggestions about how to get more information next time it happens?
>
> FreeBSD draak 7.0-CURRENT FreeBSD 7.0-CURRENT #13: Tue Jan  3 19:38:12
> GMT 2006     david at draak:/usr/obj/usr/src/sys/GENERIC  amd64
>
>
> Fatal trap 9: general protection fault while in kernel mode
> cpuid = 0; apic id = 00
> instruction pointer     = 0x8:0xffffffff8059e12e
> stack pointer           = 0x10:0xffffffffb4b77a60
> frame pointer           = 0x10:0xffffffffb4b77aa0
> 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         = 73466 (gnome-netstatus-app)
> [thread pid 73466 tid 100154 ]
> Stopped at      pmap_remove_pages+0x1ee:        movq    %r8,0x18(%rdx)
> db> tr
> Tracing pid 73466 tid 100154 td 0xffffff005a3fac30
> pmap_remove_pages() at pmap_remove_pages+0x1ee
> exit1() at exit1+0x91c
> sys_exit() at sys_exit+0xe
> syscall() at syscall+0x517
> Xfast_syscall() at Xfast_syscall+0xa8
> --- syscall (1, FreeBSD ELF64, sys_exit), rip = 0x80122e1cc, rsp =
> 0x7fffffffe6e8, rbp = 0x7fffffffe790 ---
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If you are running CURRENT you should already be aware of that:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html