gdb --version
GNU gdb (Fedora Linux) 17.2-1.fc44

gdb seems to run quite often into an intern error.  Can be reproduced most of the time  in a VM updated to 2026-07-08  

I suspect that this might happen only with  multi-threaded programs
reproducer with audacious 


Reproducible: Sometimes

Steps to Reproduce:
I would say reproducibility is most of the time  ( 8-9 out of 10 )

1.start audacious and play an audio stream e.g https://listen-ssvcbfbs.sharp-stream.com/ssvcbfbs22.aac ( works probably w/o active audio stream )
2. pkill --signal 11 audacious 
3. coredumpctl list might show two new entries  for audacious and  for gdb(!) 
4. coredumpctl debug <pid_audacious>   to provoke the interal error
 
Actual Results:
internal gdb error , session terminates and  creates two(!) new entries in coredumpctl list  


Expected Results:
get to the (gdb) prompt  to enter gdb command like  "bt full"

Additional Information:
I'll attach output of a kvm session, 2nd  try forced the error and got the backtrace

backtrace
---
Fatal signal: Segmentation fault
----- Backtrace -----
0x55dfc36c9191 gdb_internal_backtrace_1
        ../../gdb/bt-utils.c:122
0x55dfc36c9191 _Z22gdb_internal_backtracev
        ../../gdb/bt-utils.c:175
0x55dfc3820f06 handle_fatal_signal
        ../../gdb/event-top.c:1013
0x55dfc382112e handle_sigsegv
        ../../gdb/event-top.c:1090
0x7f6b952210af ???
0x55dfc37454df _ZN16core_mapped_file6regionC4Emmm
        ../../gdb/gdbcore.h:272
0x55dfc37454df _ZSt12construct_atIN16core_mapped_file6regionEJRmS2_S2_EQaant20is_unbounded_array_vIT_ErqXgsnwcvPvLi0E_S3_pispcl7declvalIT0_EEEEEPS3_S6_DpOS5_
        /usr/include/c++/16/bits/stl_construct.h:110
0x55dfc37454df _ZNSt16allocator_traitsISaIN16core_mapped_file6regionEEE9constructIS1_JRmS5_S5_EEEvRS2_PT_DpOT0_
        /usr/include/c++/16/bits/alloc_traits.h:716
0x55dfc37454df _ZNSt6vectorIN16core_mapped_file6regionESaIS1_EE12emplace_backIJRmS5_S5_EEERS1_DpOT_
        /usr/include/c++/16/bits/vector.tcc:121
0x55dfc37454df operator()
        ../../gdb/corelow.c:2157
0x55dfc37454df operator()
        ../../gdb/../gdbsupport/function-view.h:305
0x55dfc37454df _FUN
        ../../gdb/../gdbsupport/function-view.h:299
0x55dfc3901849 _ZNK3gdb13function_viewIFvimmmPKcPK12bfd_build_idEEclEimmmS2_S5_
        ../../gdb/../gdbsupport/function-view.h:289
0x55dfc3901849 linux_read_core_file_mappings
        ../../gdb/linux-tdep.c:1237
0x55dfc373e06e _Z27gdb_read_core_file_mappingsP7gdbarchP3bfd
        ../../gdb/corelow.c:2120
0x55dfc3740f10 _ZN11core_target19build_file_mappingsEv
        ../../gdb/corelow.c:375
0x55dfc374234b _ZN11core_targetC2Ev
        ../../gdb/corelow.c:350
0x55dfc3742541 core_target_open
        ../../gdb/corelow.c:1020
0x55dfc391c809 catch_command_errors
        ../../gdb/main.c:511
0x55dfc391f27a captured_main_1
        ../../gdb/main.c:1256
0x55dfc3920b01 captured_main
        ../../gdb/main.c:1349
0x55dfc3920b01 _Z8gdb_mainP18captured_main_args
        ../../gdb/main.c:1378
0x55dfc35a3f5d main
        ../../gdb/gdb.c:38
---------------------
A fatal error internal to GDB has been detected, further
debugging is not possible.  GDB will now terminate.