From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
 id 202A9385781F; Tue,  7 Sep 2021 14:51:45 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 202A9385781F
From: "arnez at linux dot ibm.com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug backtrace/28313] New: [s390] "PC not saved" when debugging
 without binary
Date: Tue, 07 Sep 2021 14:51:44 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: backtrace
X-Bugzilla-Version: unknown
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: arnez at linux dot ibm.com
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-28313-4717@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gdb-prs@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gdb-prs mailing list <gdb-prs.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/gdb-prs>,
 <mailto:gdb-prs-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/gdb-prs/>
List-Help: <mailto:gdb-prs-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/gdb-prs>,
 <mailto:gdb-prs-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Tue, 07 Sep 2021 14:51:45 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D28313

            Bug ID: 28313
           Summary: [s390] "PC not saved" when debugging without binary
           Product: gdb
           Version: unknown
            Status: NEW
          Severity: normal
          Priority: P2
         Component: backtrace
          Assignee: unassigned at sourceware dot org
          Reporter: arnez at linux dot ibm.com
  Target Milestone: ---

Several people have seen a "PC not saved" error when trying to debug progra=
ms
without an associated binary on s390x.  One way this can be reproduced is by
attaching to a program whose binary has been deleted:

(gdb) attach 3272749
Attaching to process 3272749
No executable file now.
warning: Could not load vsyscall page because no executable was specified
0x000003fffddcf186 in ?? ()
(gdb) display/i $pc
1: x/i $pc
=3D> 0x3fffddcf186:       lghi    %r1,-4096
(gdb) si
PC not saved
(gdb) p $pc
$1 =3D (void (*)()) 0x3fffddcf18a

Note that the "PC not saved" error prevents the printing of the auto-display
expression in this case.

--=20
You are receiving this mail because:
You are on the CC list for the bug.=