Re: panic: page fault

В Tue, 14 Aug 2012 14:04:07 -0400
John Baldwin <jhb_at_freebsd.org> пишет:

> On Tuesday, August 14, 2012 05:29:09 AM Ivan Klymenko wrote:  
> > http://privatepaste.com/147286442b  
> 
> It is easier to reply if the messages are inline (for future
> reference).  The panic and relevant bit of backtrace are below.
> Sadly, trying to cut and paste this destroyed the formatting, so I've
> tried to fix it by hand. :(
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address   = 0x18
> fault code              = supervisor read data, page not present
> instruction pointer     = 0x20:0xffffffff80933e07
> stack pointer           = 0x28:0xffffff823025b660
> frame pointer           = 0x28:0xffffff823025b6c0 
> 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         = 12 (irq256: bce0)
> trap number             = 12
> panic: page fault 
> 
> #6  0xffffffff80bb5e53 in calltrap ()
>     at /usr/src/sys/amd64/amd64/exception.S:228
> #7  0xffffffff80933e07 in m_copym (m=0x0, off0=1500, len=1480, wait=1)
>     at /usr/src/sys/kern/uipc_mbuf.c:542
> #8  0xffffffff809f8b76 in ip_fragment (ip=0xfffffe004b2f3980,
> m_frag=0xffffff823025b7c8, mtu=Variable "mtu" is not available. )
>     at /usr/src/sys/netinet/ip_output.c:822
> #9  0xffffffff809f948a in ip_output (m=0xfffffe004b2f3900,
> opt=Variable "opt" is not available. )
>     at /usr/src/sys/netinet/ip_output.c:654
> #10 0xffffffff809f59fa in ip_forward (m=0xfffffe004b2f3900,
> srcrt=Variable "srcrt" is not available. )
>     at /usr/src/sys/netinet/ip_input.c:1494 
> #11 0xffffffff809f6dc6 in ip_input (m=0xfffffe004b2f3900)
>     at /usr/src/sys/netinet/ip_input.c:702
>   

I apologize for not having answered - no more required files...
At that time it was not possible to fulfill your request ...
Now I have gained a number of similar panic's and i ready to provide
the results.

> Can you run kgdb again and do 'frame 8' followed by 'p *m_frag', 'p
> m0', and 'p *m0'?
>   

kgdb.log in attach

> Can you also grab my gdb scripts at www.freebsd.org/~jhb/gdb/ and run
> 'cd /path/to/scripts', 'source gdb6', 'mbuf m0' as well?
>   

What kind of shell should I use for this?

[root_at_rt02 /var/crash]# exit
root_at_rt02:/var/crash # csh
You have mail.
root_at_rt02:/var/crash # source gdb6
osrelease: Undefined variable.
root_at_rt02:/var/crash # exit
root_at_rt02:/var/crash # bash
[root_at_rt02 /var/crash]# source gdb6
bash: gdb6: line 29: syntax error near unexpected token `('
bash: gdb6: line 29: `set $P_STOPPED = ($P_STOPPED_SIG |
$P_STOPPED_TRACE | $P_STOPPED_SINGLE)' [root_at_rt02 /var/crash]# exit
root_at_rt02:/var/crash # tcsh
You have mail.
root_at_rt02:/var/crash # so
sockstat soelim   sort     source   
root_at_rt02:/var/crash # source gdb6
osrelease: Undefined variable.
root_at_rt02:/var/crash # ls
bounds                  core.txt.3              dot.gdbinit.paths
info.1                  info.5                  vmcore.2
core.txt.0              core.txt.4              gdb6
info.2                  minfree                 vmcore.3
core.txt.1              core.txt.5              gdb6.amd64
info.3                  vmcore.0                vmcore.4
core.txt.2              dot.gdbinit.kernel      info.0
info.4                  vmcore.1                vmcore.5


Thanks.