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 id 1Zup1J-0008NI-SQ; Fri, 06 Nov 2015 23:58:05 +0200
Subject: Re: strange kernel crash
To: Hans Petter Selasky <hps@selasky.org>,
 FreeBSD Current <freebsd-current@FreeBSD.org>,
 FreeBSD Hackers <freebsd-hackers@FreeBSD.org>
References: <563C8CED.3020101@FreeBSD.org> <563CEB53.50909@selasky.org>
From: Andriy Gapon <avg@FreeBSD.org>
Message-ID: <563D2236.4030708@FreeBSD.org>
Date: Fri, 6 Nov 2015 23:57:10 +0200
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On 06/11/2015 20:02, Hans Petter Selasky wrote:
> On 11/06/15 12:20, Andriy Gapon wrote:
>> Now the strange part:
>>
>>     0xffffffff80619a18 <+744>:   jne    0xffffffff80619a61 <__mtx_lock_flags+817>
>>     0xffffffff80619a1a <+746>:   mov    %rbx,(%rsp)
>> => 0xffffffff80619a1e <+750>:   movq   $0x0,0x18(%rsp)
>>     0xffffffff80619a27 <+759>:   movq   $0x0,0x10(%rsp)
>>     0xffffffff80619a30 <+768>:   movq   $0x0,0x8(%rsp)
> 
> Were these instructions dumped from RAM or from the kernel ELF file?

Whatever minidump and kgdb (libkvm) do for the text section.
Just in case, in addition to 'disassemble' I also did this:

(kgdb) x/i 0xffffffff80619a1e
=> 0xffffffff80619a1e <__mtx_lock_flags+750>:   movq   $0x0,0x18(%rsp)


-- 
Andriy Gapon