misc/123066: kernel trap with ipsec

[misha saf]

* Kris Kennaway <kris at FreeBSD.org> [Sat, 26 Apr 2008 13:09:08 +0000]:
> On Fri, Apr 25, 2008 at 07:20:03AM +0000, misha saf wrote:
> > The following reply was made to PR kern/123066; it has been noted by
> GNATS.
> >
> > From: misha saf <msaf1980 at rambler.ru>
> > To: Kris Kennaway <kris at FreeBSD.org>
> > Cc: <freebsd-gnats-submit at FreeBSD.org>
> > Subject: Re: misc/123066: kernel trap with ipsec
> > Date: Fri, 25 Apr 2008 10:59:33 +0400
> >
> >  * Kris Kennaway <kris at FreeBSD.org> [Fri, 25 Apr 2008 05:46:54 
+0000]:
> >  > On Fri, Apr 25, 2008 at 04:13:40AM +0000, Mihail wrote:
> >  >
> >  > > (kgdb) backtrace
> >  > > #0  doadump () at pcpu.h:195
> >  > > #1  0xc075df57 in boot (howto=260) at
> >  > /usr/src/sys/kern/kern_shutdown.c:409
> >  > > #2  0xc075e219 in panic (fmt=Variable "fmt" is not available.
> >  > > ) at /usr/src/sys/kern/kern_shutdown.c:563
> >  > > #3  0xc0a9766c in trap_fatal (frame=0xc884e934, eva=3621180904)
> >  > >     at /usr/src/sys/i386/i386/trap.c:899
> >  > > #4  0xc0a978f0 in trap_pfault (frame=0xc884e934, usermode=0,
> >  > eva=3621180904)
> >  > >     at /usr/src/sys/i386/i386/trap.c:812
> >  > > #5  0xc0a9829c in trap (frame=0xc884e934) at
> >  > /usr/src/sys/i386/i386/trap.c:490
> >  > > #6  0xc0a7e21b in calltrap () at
> >  > /usr/src/sys/i386/i386/exception.s:139
> >  > > #7  0xc0a952f6 in generic_bcopy () at
> >  > /usr/src/sys/i386/i386/support.s:498
> >  > > Previous frame inner to this frame (corrupt stack?)
> >  >
> >  > Unfortunately we need the rest of the stack.  Can you either try 
to
> >  > reproduce with DDB in the kernel and obtain a stack trace from
> there,
> >  > or if this is not possible then try recompiling the kernel with 
-O
> >  > instead of -O2 which tends to produce better stack traces.
> >  >
> >  > Kris
>
> >  That's all needed info ?
>
> No, stack frames 8 and beyond contained the important parts of the
> stack trace, but were not displayed by gdb.  What we need is what I
> explained above.
>
> Kris
>
> --
> In God we Trust -- all others must submit an X.509 certificate.
>     -- Charles Forsythe <forsythe at alum.mit.edu>

--
db> trace
Tracing pid 996 tid 100075 td 0xc1ed2210
generic_bcopy(c1c8b700, c1eeac80,0,14,9,...) at generic_bcopy+0x1a
ipsec4_process_packet(c1c8b700, c1eeac80,20,0,c1f00924,...) at 
ipsec4_process_packet+0x28b
ip_ipsec_output(c886db04, c1f00924,c886dae4,c886db0c,...) at 
ip_ipsec_output+0x1a3
ip_output(c1c8b700,0,c886dac8,20,0,...) at ip_output+0x8ef
rip_output(c1c8b700,c1d3c630,1c8a8c0,0,...) at rip_output+0x35e
rip_send(c1d3c630,0,c1c8b700,c1bcebd0,0,...) at rip_send+0x5c
sosend_generic(c1d3c630,c1bcebd0,c886dbe8,c1c8b700,0,...) at 
sosend_generic+0x64
sosend(c1d3c630,c1bcebd0,c886dbe8,0,0,...) at sosend+0x3f
kern_sendit(c1ed2210,3,c886dc64,0,0,...) at kern_sendit+0x106
sendit(0,8050cec,0,c886dc64,0,0,...) at sendit+0xb1
sendto(c1ed2210,c886dcfc,18,c886dd38,c866dd2c,...) at sendto+0x48
syscall(c886dd38) at syscall+0x335
Xint0x80_syscall() at Xint0x80_syscall+0x20
----syscal(133, FreeBSD ELF32, sendto), eip = 0x28156edf, esp = 
0xbfbee7ec, ebp = 0xbfbee828