seen with the trunk 20210630, and the gdb-12 branch 20210705 on s390x-linux-gnu:
$ gdb /bin/ls
GNU gdb (Ubuntu 11.0.90.20210705-0ubuntu1) 11.0.90.20210705-git
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "s390x-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /bin/ls...
(No debugging symbols found in /bin/ls)
(gdb) run
Starting program: /usr/bin/ls
/home/ubuntu/tmp/gdb-11.0.90.20210705/gdb/linux-tdep.c:2550: internal-error: displaced_step_prepare_status linux_displaced_step_prepare(gdbarch*, thread_info*, CORE_ADDR&): Assertion `gdbarch_data->num_disp_step_buffers > 0' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n
Command aborted.
(gdb)
seen with the trunk 20210630, and the gdb-12 branch 20210705 on s390x-linux-gnu:
$ gdb /bin/ls 20210705- 0ubuntu1) 11.0.90. 20210705- git gnu.org/ licenses/ gpl.html> /www.gnu. org/software/ gdb/bugs/>. www.gnu. org/software/ gdb/documentati on/>.
GNU gdb (Ubuntu 11.0.90.
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "s390x-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https:/
Find the GDB manual and other documentation resources online at:
<http://
For help, type "help". tmp/gdb- 11.0.90. 20210705/ gdb/linux- tdep.c: 2550: internal-error: displaced_ step_prepare_ status linux_displaced _step_prepare( gdbarch* , thread_info*, CORE_ADDR&): Assertion `gdbarch_ data->num_ disp_step_ buffers > 0' failed.
Type "apropos word" to search for commands related to "word"...
Reading symbols from /bin/ls...
(No debugging symbols found in /bin/ls)
(gdb) run
Starting program: /usr/bin/ls
/home/ubuntu/
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n
Command aborted.
(gdb)