[Authentication] Packagekit segfaults when realmd tries to look up required packages

[Niklas Andersson]

Hi,

  Where is the best place to report this bug?

  It occurs on Ubuntu 16.04. When realmd tries to do the lookup of 
required packages it talks to packagekitd that segfaults.

Here is the back trace:

Starting program: /usr/lib/packagekit/packagekitd
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff4ceb700 (LWP 1292)]
[New Thread 0x7ffff44ea700 (LWP 1293)]
[New Thread 0x7ffff3ce9700 (LWP 1294)]
[New Thread 0x7ffff2431700 (LWP 1295)]
[Thread 0x7ffff2431700 (LWP 1295) exited]
[New Thread 0x7ffff2431700 (LWP 1307)]

Thread 6 "PK-Backend" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff2431700 (LWP 1307)]
strlen () at ../sysdeps/x86_64/strlen.S:106
106    ../sysdeps/x86_64/strlen.S: No such file or directory.
(gdb) bt
#0  strlen () at ../sysdeps/x86_64/strlen.S:106
#1  0x00007ffff65efba9 in __add_to_environ (
     name=name at entry=0x7ffff1a289ef "http_proxy", value=value at entry=0x0,
     combined=combined at entry=0x0, replace=replace at entry=1) at setenv.c:131
#2  0x00007ffff65efcca in __setenv (
     name=name at entry=0x7ffff1a289ef "http_proxy", value=value at entry=0x0,
     replace=replace at entry=1) at setenv.c:259
#3  0x00007ffff1a175cf in AptIntf::init (this=this at entry=0x55555585b070)
     at apt-intf.cpp:94
#4  0x00007ffff1a24c00 in pk_backend_resolve_thread (job=<optimized out>,
     params=<optimized out>, user_data=<optimized out>)
     at pk-backend-aptcc.cpp:685
#5  0x000055555556e419 in pk_backend_job_thread_setup (
     thread_data=0x555555859df0) at pk-backend-job.c:792
#6  0x00007ffff6c0cb45 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ffff69866fa in start_thread (arg=0x7ffff2431700)
     at pthread_create.c:333
#8  0x00007ffff66bcb5d in clone ()
     at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
(gdb)