Comment 5 for bug 1832915

# get debug symbols and gdb
$ sudo apt install numad-dbgsym gdb dpkg-dev
# get source as used in the package
$ apt source numad
# I found that we will also need glibc source, so:
$ apt source glibc

It helps to add paths to gdb
(gdb) directory /home/ubuntu/numad-0.5+20150602:/home/ubuntu/glibc-2.27:/home/ubuntu/glibc-2.27/malloc

I found these backtraces:

Thread 1 "numad" received signal SIGSEGV, Segmentation fault.
tcache_get (tc_idx=<optimized out>) at malloc.c:2943
2943 malloc.c: No such file or directory.
(gdb) bt
#0 tcache_get (tc_idx=<optimized out>) at malloc.c:2943
#1 __GI___libc_malloc (bytes=16) at malloc.c:3050
#2 0x00000d9b7ec780dc in bind_process_and_migrate_memory (p=0xd9b843b0f70) at numad.c:993
#3 0x00000d9b7ec7d148 in manage_loads () at numad.c:2225
#4 0x00000d9b7ec734dc in main (argc=<optimized out>, argv=<optimized out>) at numad.c:2654

(gdb) bt
#0 0x00000fb6cd2779f4 in bind_process_and_migrate_memory (p=0xfb6fc1e0f70) at numad.c:998
#1 0x00000fb6cd27d148 in manage_loads () at numad.c:2225
#2 0x00000fb6cd2734dc in main (argc=<optimized out>, argv=<optimized out>) at numad.c:2654

(gdb) bt
#0 0x000001c757da79f4 in bind_process_and_migrate_memory (p=0x1c758a60f70) at numad.c:998
#1 0x000001c757dad148 in manage_loads () at numad.c:2225
#2 0x000001c757da34dc in main (argc=<optimized out>, argv=<optimized out>) at numad.c:2654