[pkg-gnupg-maint] Bug#789246: FTBFS amd64

[Daniel Kahn Gillmor]

On Mon 2015-09-14 12:24:45 -0400, Kurt Roeckx wrote:
> On Mon, Sep 14, 2015 at 09:47:25AM -0400, Daniel Kahn Gillmor wrote:
>> On Sun 2015-09-13 17:23:01 -0400, Kurt Roeckx wrote:
>> > On Sun, Sep 13, 2015 at 05:08:52PM -0400, Daniel Kahn Gillmor wrote:
>> >> In the meantime, is it possible to give gnupg2 2.1.8-1 back to a
>> >> different amd64 buildd (brahms and x86-grnet-01 both have worked in the
>> >> past) so that the package can propagate through the archive?
>> >
>> > Given back, but I don't control on which buildd it's going to end
>> > up.
>> 
>> Thanks, this resolved it by building 2.1.8-1 cleanly on x86-grnet-01.
>> 
>> It's not clear to me what the problem is with x86-csail-01 -- is there
>> some way that we can diagnose this buildd better?  it seems to be
>> repeatable over time :/
>
> I can run tests on it if needed.

It looks to me like the hang is happening in the code that calibrates
the s2k count in the agent. (from agent/protect.c)

I've tried to extract the logic from this code and make a simple
executable that just does it (without invoking gcrypt or anything else
-- it's just calibrating cpu cycles and walltime clocks.

Running it locally for me looks like this:

0 dkg at alice:~/src/pkg-gnupg/bugs/789246$ make
gcc -Wall -Werror --pedantic -o test-csail test-csail.c
0 dkg at alice:~/src/pkg-gnupg/bugs/789246$ ./test-csail 
S2K calibration: 2 -> 20ms
S2K calibration: 4 -> 30ms
S2K calibration: 8 -> 40ms
S2K calibration: 16 -> 70ms
S2K calibration: 32 -> 100ms
S2K calibration: 64 -> 180ms
S2K calibration: 35 -> 80ms
x: 35
0 dkg at alice:~/src/pkg-gnupg/bugs/789246$

I'm attaching it here.  Can you try compiling and running it on
x86-csail-01 and letting me know what happens?

Thanks,

        --dkg

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