svn commit: r328610 - head/sys/amd64/amd64

[Ed Maste]

On 30 January 2018 at 21:01, John Baldwin <jhb at freebsd.org> wrote:
> On Tuesday, January 30, 2018 11:29:27 PM John Baldwin wrote:
>> Author: jhb
>> Date: Tue Jan 30 23:29:27 2018
>> New Revision: 328610
>> URL: https://svnweb.freebsd.org/changeset/base/328610
>>
>> Log:
>>   Ensure 'name' is not NULL before passing to strcmp().
>>
>>   This avoids a nested page fault when obtaining a stack trace in DDB if
>>   the address from the first frame does not resolve to a known symbol.
>>
>>   MFC after:  1 week
>>   Sponsored by:       Chelsio Communications
>
> This appears to be fallout from lld?  After fixing this, the stack trace
> for my next panic shows no symbols for functions in the kernel, only
> functions in kernel modules:

It's fallout from loader changes in r328536. I reverted r328536 (and
r328603) locally and stack traces are fixed.