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Date:      Sat, 30 Jul 2011 11:14:34 +0300
From:      Andriy Gapon <avg@FreeBSD.org>
To:        maestro something <maestro82@gmail.com>
Cc:        freebsd-stable@FreeBSD.org
Subject:   Re: dtrace ustack kernel panic
Message-ID:  <4E33BD6A.4030303@FreeBSD.org>
In-Reply-To: <4E33B7CF.90200@FreeBSD.org>
References:  <CAJ_JOqvEmXBTBABhUcJ66=bh9%2B8S%2BC9v30hXxVZiCXuEpGPJ1A@mail.gmail.com> <4E2E9F60.1060808@FreeBSD.org> <CAJ_JOqszViwLi6TeQxAxeX2Mte5eBPsGJpjQPVOQs2BOwAq9JQ@mail.gmail.com> <4E33B7CF.90200@FreeBSD.org>

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on 30/07/2011 00:27 maestro something said the following:
> on 30/07/2011 10:50 Andriy Gapon said the following:
>> #7  0xc11012d7 in dtrace_panic_trigger () from /boot/kernel/dtrace.ko
>> > Previous frame inner to this frame (corrupt stack?)
>> > (kgdb)
>> > 
>> > what am I doing wrong and what do I have to do to get the specific assert that
>> > fails?
> I am not quite sure.  Apparently there is some issue with either what
> information we store in a crash dump and how, or with how kgdb interprets that
> information, or with a combination of both...

Or maybe it's because dtrace_panic_trigger is a function implemented in assembly
and we do not provide enough debug information to (k)gdb in that case.

-- 
Andriy Gapon



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