Date: Sat, 26 Apr 2008 13:09:08 +0000 From: Kris Kennaway <kris@FreeBSD.org> To: misha saf <msaf1980@rambler.ru> Cc: freebsd-net@FreeBSD.org Subject: Re: misc/123066: kernel trap with ipsec Message-ID: <20080426130908.GE47671@hub.freebsd.org> In-Reply-To: <200804250720.m3P7K3Jk019605@freefall.freebsd.org> References: <200804250720.m3P7K3Jk019605@freefall.freebsd.org>
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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@rambler.ru>
> To: Kris Kennaway <kris@FreeBSD.org>
> Cc: <freebsd-gnats-submit@FreeBSD.org>
> Subject: Re: misc/123066: kernel trap with ipsec
> Date: Fri, 25 Apr 2008 10:59:33 +0400
>
> * Kris Kennaway <kris@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
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