Created attachment 1566091 [details]
rpmbuild output + last coredump

Description of problem:

Several segfaults occurred during rpmbuild process

Version-Release number of selected component (if applicable):

$ rpm -qf /usr/bin/gdb-add-index
gdb-headless-8.2-6.fc29.x86_64

How reproducible:
always

Steps to Reproduce:

$ rpmdev-setuptree
$ rpm -ivh grub2-2.02-62.fc29.src.rpm
$ cd rpmbuild/SPECS
$ rpmbuild -ba grub2.spec |& tee output.txt
...
$ grep 'Segmentation fault' output.txt
/usr/bin/gdb-add-index: line 67:  5278 Segmentation fault      (core dumped) $GDB --batch -nx -iex 'set auto-load no' -ex "file $file" -ex "save gdb-index $dwarf5 $dir"
/usr/bin/gdb-add-index: line 67:  5292 Segmentation fault      (core dumped) $GDB --batch -nx -iex 'set auto-load no' -ex "file $file" -ex "save gdb-index $dwarf5 $dir"
/usr/bin/gdb-add-index: line 67:  5485 Segmentation fault      (core dumped) $GDB --batch -nx -iex 'set auto-load no' -ex "file $file" -ex "save gdb-index $dwarf5 $dir"

---

$ coredumpctl dump --output=coredump
Hint: You are currently not seeing messages from other users and the system.
      Users in groups 'adm', 'systemd-journal', 'wheel' can see all messages.
      Pass -q to turn off this notice.
           PID: 5485 (gdb)
           UID: 1000 (kb)
           GID: 1001 (kb)
        Signal: 11 (SEGV)
     Timestamp: Thu 2019-05-09 12:17:23 CEST (25min ago)
  Command Line: gdb --batch -nx -iex set auto-load no -ex file /home/kb/rpmbuild/BUILD/grub-2.02/debug/usr/sbin/grub2-probe -ex save gdb-index  /home/kb/rpmbuild/BUILD/grub-2.02/debug/usr/sbin
    Executable: /usr/libexec/gdb
 Control Group: /user.slice/user-0.slice/session-6.scope
          Unit: session-6.scope
         Slice: user-0.slice
       Session: 6 
     Owner UID: 0 (root)
       Boot ID: 3223255ee06b4abfbfd5744370087f26
    Machine ID: 55cf1e6795614ff1b9f015d61e4d6751
      Hostname: fosil
       Storage: /var/lib/systemd/coredump/core.gdb.1000.3223255ee06b4abfbfd5744370087f26.5485.1557397043000000.lz4
       Message: Process 5485 (gdb) of user 1000 dumped core.
                
                Stack trace of thread 5485:
                #0  0x000055d351d12e60 n/a (gdb)
                #1  0x000055d351d12f50 n/a (gdb)
                #2  0x000055d351d1366d n/a (gdb)
                #3  0x000055d351d271d4 n/a (gdb)
                #4  0x000055d351d2c558 n/a (gdb)
                #5  0x000055d351d2dbdf n/a (gdb)
                #6  0x000055d351dcb777 n/a (gdb)
                #7  0x000055d351dcf220 n/a (gdb)
                #8  0x000055d351e2b3fc n/a (gdb)
                #9  0x000055d351e2b573 n/a (gdb)
                #10 0x000055d351db4b61 n/a (gdb)
                #11 0x000055d351e30b51 n/a (gdb)
                #12 0x000055d351e30727 n/a (gdb)
                #13 0x000055d351e30963 n/a (gdb)
                #14 0x000055d351e1d416 n/a (gdb)
                #15 0x000055d351e22b8c n/a (gdb)
                #16 0x000055d351c5063e n/a (gdb)
                #17 0x000055d351bba4ba n/a (gdb)
                #18 0x000055d351e5e4a1 n/a (gdb)
                #19 0x000055d351d9d528 n/a (gdb)
                #20 0x000055d351d9e932 n/a (gdb)
                #21 0x000055d351aee89f n/a (gdb)
                #22 0x00007f80e8a88413 __libc_start_main (libc.so.6)
                #23 0x000055d351af220e n/a (gdb)
                
                Stack trace of thread 5490:
                #0  0x00007f80e90c472c pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                #1  0x00007f80e88938db GC_wait_marker (libgc.so.1)
                #2  0x00007f80e8888dea GC_help_marker (libgc.so.1)
                #3  0x00007f80e889388f GC_mark_thread (libgc.so.1)
                #4  0x00007f80e90be58e start_thread (libpthread.so.0)
                #5  0x00007f80e8b61683 __clone (libc.so.6)
More than one entry matches, ignoring rest.

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Expected results:
no segfault