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From: "doko at debian dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/28056] New: [11/12 Regression] linux-tdep.c:2550:
 internal-error: displaced_step_prepare_status linux_displaced_step_prepare on
 s390x-linux-gnu
Date: Mon, 05 Jul 2021 08:27:01 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28056

            Bug ID: 28056
           Summary: [11/12 Regression] linux-tdep.c:2550: internal-error:
                    displaced_step_prepare_status
                    linux_displaced_step_prepare on s390x-linux-gnu
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: doko at debian dot org
  Target Milestone: ---

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.htm=
l>
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=20
/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)

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