[Pkg-gnupg-maint] Bug#776611: Bug#776611: [dirmngr] segfaults

[Daniel Kahn Gillmor]

Control: tags 776611 + unreproducible moreinfo

On Thu 2015-01-29 17:22:00 -0500, Florian Reitmeir wrote:
> Package: dirmngr
> Version: 1.1.1-4
> Severity: serious
>
> i really do not know how to debug it, but .. it always segfaults.
>
> [   14.070905] dirmngr[2239]: segfault at 2 ip 00007f5cda9b9ff6 sp
> 00007ffffd09e130 error 4 in libc-2.19.so[7f5cda981000+19f000]
 [...]
> [  444.735631] dirmngr[5172]: segfault at 2 ip 00007fadea76fff6 sp
> 00007fff21acd780 error 4 in libc-2.19.so[7fadea737000+19f000]

hm, i'm assuming that because this happens very early, this is the
system dirmngr process that is segfaulting.

I've got this same version running on an amd64 system with libassuan
2.1.2-2 as well, but i'm not seeing these segfaults.

Can you send this bug report (or me privately, if you think it's
sensitive) the contents of /var/log/dirmngr/dirmngr.log ?

If that doesn't provide a useful hint, you might try halting the system
service and launching it by hand under strace (as the superuser):

 systemctl stop dirmngr
 strace -f -o /root/dirmngr.strace su - dirmngr -c '/usr/bin/dirmngr --daemon --sh'

if it crashes at that point, you can send on /root/dirmngr.strace.

If all of the above is fruitless, and you want to keep trying, can i get
you to rebuild the package with debug symbols (DEB_BUILD_OPTIONS=nostrip
should work) and install libc6-dbg and capture a coredump to get a
backtrace?

Thanks for the report,

        --dkg
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