To build FreeBSD port with debug symbols:

# make WITH_DEBUG=yes


That's how I proceeded to get detailed backtrace for phab ticket.

Peter


On 03/23/2016 19:16, Eric McCorkle wrote:
> I couldn't seem to track down where the allocation is happening there.  I 
> also couldn't get the freebsd port build to do debug builds.
>
> I'm going to try good old printf debugging tonight to get to the bottom of it.
>
> On March 23, 2016 11:50:14 AM EDT, Miguel C <miguelmcl...@gmail.com> wrote:
>> On Wed, Mar 23, 2016 at 1:14 PM, Eric McCorkle <e...@metricspace.net>
>> wrote:
>>
>>> A possible root cause: ZFS allows for noexec and nosuid options on
>> file
>>> systems.  I believe the freebsd installer sets them by default, so if
>>> you're storing executables in places other than bin/ directories,
>> that
>>> could be part of the problem.
>>>
>>>
>> True, but that's not the "default" case, exec is set to "on" on all the
>> datasets and noexec/nosuid are not present. And if that was the case I
>> guess we would see some related error, but what do I know  :P
>>
>> However:
>> "Above that is what basically comes down to a trace of freebsd malloc
>> for
>> an impossibly huge block (size 34359738376).  Looks like something in
>> e_modapi_save is allocating bad-sized blocks."
>>
>> maybe e_modapi_save just doesn't do this well for zfs, but just
>> guessing,
>> I'm not a C coder :|
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