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 ED2DF398B813; Wed,  5 May 2021 02:14:01 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org ED2DF398B813
From: "corydoras at ridiculousfish dot com"
 <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/26116] gdbserver with zsh as the shell hangs at startup
 when .zshenv forks
Date: Wed, 05 May 2021 02:14:01 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: server
X-Bugzilla-Version: HEAD
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: corydoras at ridiculousfish dot 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: cc
Message-ID: <bug-26116-4717-DunEpbu1wd@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-26116-4717@http.sourceware.org/bugzilla/>
References: <bug-26116-4717@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: Wed, 05 May 2021 02:14:02 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D26116

ridiculous_fish <corydoras at ridiculousfish dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |corydoras at ridiculousfis=
h dot co
                   |                            |m

--- Comment #2 from ridiculous_fish <corydoras at ridiculousfish dot com> -=
--
fish shell is also seeing this - see
https://github.com/fish-shell/fish-shell/issues/7957

My investigation got as far as follows: gdbserver forks in preparation for
exec'ing the shell. Before exec, it requests ptrace on itself (in
`linux_ptrace_fun`). This causes signals to be delivered to gdbserver before
the inferior shell; however gdbserver does not then arrange for the signal =
to
be delivered to the shell so it is dropped. fish (and presumably zsh) relie=
s on
SIGCHLD to reap processes, so fish ends up hanging.

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