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 [thread overview]
Message-ID: <bug-27224-6586-rGN98ULHw7@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-27224-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=27224
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 ***
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prev parent reply other threads:[~2021-01-29 10:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 4:26 [Bug runtime/27224] New: stap 4.4 'cannot attach to module' in debugfs mode as non-root craig.ringer at 2ndquadrant dot com
2021-01-22 4:26 ` [Bug runtime/27224] " craig.ringer at 2ndquadrant dot com
2021-01-22 4:27 ` craig.ringer at 2ndquadrant dot com
2021-01-22 4:31 ` craig.ringer at 2ndquadrant dot com
2021-01-22 4:42 ` craig.ringer at 2ndquadrant dot com
2021-01-22 4:42 ` [Bug runtime/27224] stap 4.4 'cannot attach to module' in debugfs mode as non-root (WITH WORKAROUND) craig.ringer at 2ndquadrant dot com
2021-01-22 22:30 ` fche at redhat dot com
2021-01-22 22:31 ` fche at redhat dot com
2021-01-29 10:43 ` craig.ringer at 2ndquadrant dot com [this message]
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