Re: Darwin-kernel Digest, Vol 16, Issue 10
Re: Darwin-kernel Digest, Vol 16, Issue 10
- Subject: Re: Darwin-kernel Digest, Vol 16, Issue 10
- From: Prokash Sinha via Darwin-kernel <email@hidden>
- Date: Thu, 30 May 2019 14:46:04 -0700
I think the problem could be Enet over VM…, in my case.
In local subnet, I will try two real machines over internet to see how it
respond.
I know GDB and KGDB are not true sense kernel debugger. So I don’t expect LLDB
going to be a real kernel debugger either, but system gets locked after two to
three hard breaks ( __asm int3;) even though I respond fairly fast is pain…
For example, Window kernel debugger I can set a break point, once it breaks
into - I can take a vacation and start debugging from there after few days…
Since KDP protocol does not send much across the line, even a NULL serial could
be fine…
/r,
prokash
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 30 May 2019 17:21:32 +0200
> From: Phil Dennis-Jordan <email@hidden>
> To: email@hidden
> Cc: "email@hidden Kernel"
> <email@hidden>
> Subject: Re: Been bothering ever since 10.12+
> Message-ID:
> <CAGCz3vt9A58zteGcamV=m_=4L1y=email@hidden>
> Content-Type: text/plain; CHARSET=US-ASCII
>
> On Fri, May 17, 2019 at 12:29 AM <email@hidden> wrote:
>> In my experience: The mac kernel intermittently locks up during
>> single-step kernel debugging. This has been an issue since well before
>> 10.12, at least going back to 10.6 .
>>
>> Using breakpoints instead of single-step mostly avoids the kernel
>> debugger lock-ups, but still happens occasionally. For issues where
>> breakpoints don't cut it, things can be pretty frustrating.
>
> I can confirm all of the above and will add: it seems to be a little
> more reliable over Firewire versus Ethernet. Plus, commands with large
> output (showallthreads and such) tend to run much faster. These days,
> using Firewire means a multitude of dongles, but what can you do. It'd
> be nice if you could do it via a direct Thunderbolt connection or if
> macOS started supporting the special USB 3.0 A-to-A debug cable that
> can apparently be used for debugging the Linux and Windows kernels.
>
> Phil
>
>
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> End of Darwin-kernel Digest, Vol 16, Issue 10
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