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 D50D7388E823; Fri, 29 Jan 2021 10:43:18 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D50D7388E823
From: "craig.ringer at 2ndquadrant dot com"
 <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug runtime/27224] stap 4.4 'cannot attach to module' in debugfs
 mode as non-root (WITH WORKAROUND)
Date: Fri, 29 Jan 2021 10:43:18 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: systemtap
X-Bugzilla-Component: runtime
X-Bugzilla-Version: unspecified
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: craig.ringer at 2ndquadrant dot com
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Resolution: DUPLICATE
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: systemtap at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: resolution bug_status
Message-ID: <bug-27224-6586-rGN98ULHw7@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-27224-6586@http.sourceware.org/bugzilla/>
References: <bug-27224-6586@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: systemtap@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Systemtap mailing list <systemtap.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/systemtap>,
 <mailto:systemtap-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/systemtap/>
List-Help: <mailto:systemtap-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/systemtap>,
 <mailto:systemtap-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Fri, 29 Jan 2021 10:43:18 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D27224

Craig Ringer <craig.ringer at 2ndquadrant dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |DUPLICATE
             Status|WAITING                     |RESOLVED

--- Comment #6 from Craig Ringer <craig.ringer at 2ndquadrant dot com> ---
That's

```
commit e3d03db82
Author: Frank Ch. Eigler <fche@redhat.com>
Date:   Sun Dec 13 21:05:23 2020 -0500

    PR23512: fix staprun/stapio operation via less-than-root privileges

    Commit 7615cae790c899bc8a82841c75c8ea9c6fa54df3 for PR26665 introduced
    a regression in handling stapusr/stapdev/stapsys gid invocation of
    staprun/stapio.  This patch simplifies the relevant code in
    staprun/ctl.c, init_ctl_channel(), to rely on openat/etc. to populate
    and use the relay_basedir_fd as much as possible.  Also, we now avoid
    unnecessary use of access(), which was checking against the wrong
    (real rather than effective) uid/gid.
```

and sounds about right.

Fine to close this. Workaround is documented by this bug now.

*** This bug has been marked as a duplicate of bug 27067 ***

--=20
You are receiving this mail because:
You are the assignee for the bug.=