From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Philipp Stephani Newsgroups: gmane.emacs.bugs Subject: bug#47828: seccomp test failures Date: Sun, 18 Apr 2021 10:36:53 +0200 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34133"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Philipp Stephani , 47828@debbugs.gnu.org To: Glenn Morris Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Apr 18 10:38:21 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lY2we-0008mY-OF for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 18 Apr 2021 10:38:20 +0200 Original-Received: from localhost ([::1]:56376 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lY2wb-0001G9-LS for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 18 Apr 2021 04:38:17 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59538) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lY2wM-0001FP-S6 for bug-gnu-emacs@gnu.org; Sun, 18 Apr 2021 04:38:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:33714) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lY2wM-0003QW-Ja for bug-gnu-emacs@gnu.org; Sun, 18 Apr 2021 04:38:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lY2wM-0001AO-Hn for bug-gnu-emacs@gnu.org; Sun, 18 Apr 2021 04:38:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Philipp Stephani Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 18 Apr 2021 08:38:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 47828 X-GNU-PR-Package: emacs Original-Received: via spool by 47828-submit@debbugs.gnu.org id=B47828.16187350314424 (code B ref 47828); Sun, 18 Apr 2021 08:38:02 +0000 Original-Received: (at 47828) by debbugs.gnu.org; 18 Apr 2021 08:37:11 +0000 Original-Received: from localhost ([127.0.0.1]:45260 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lY2vX-00019I-Fq for submit@debbugs.gnu.org; Sun, 18 Apr 2021 04:37:11 -0400 Original-Received: from mail-oi1-f170.google.com ([209.85.167.170]:35627) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lY2vW-000194-2V for 47828@debbugs.gnu.org; Sun, 18 Apr 2021 04:37:10 -0400 Original-Received: by mail-oi1-f170.google.com with SMTP id e25so2554735oii.2 for <47828@debbugs.gnu.org>; Sun, 18 Apr 2021 01:37:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Ifpp8zzXzX8dfqG5KqioEN5zG8q68yB6DWvk6s1EUc8=; b=brDbAifMOlqKX/cfQpAjyuz6XDzt6Y9/X+GG9g9ZP+JS2gUr8VxWw0IMI4rhTu0kMi yoY+wd5Qi6LS7yRJFtEuzWUves55qeFgoMed8vkbexTYMu/wuD+ygFYFmDYbl6QwjMHU JIvqBUlqVXUX97z//j/Khqvc93LQq4p9N7olAOgtRUr2ZLKoPCI8DYJWiOaDDwX1At9E uBX6F5JuOaG9oUnMghC52fTKmN/aH91lAtsnZqJ0y80nV4Nn8VaivAd4CJpV0twXVg6Y zmjsd8FyNNhJ2yaQZwG+3C5GhfRzBnRe46FAXI3JihD9CIhW2PeuBIQ15Q/KGJwNs0nc KRrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Ifpp8zzXzX8dfqG5KqioEN5zG8q68yB6DWvk6s1EUc8=; b=q+Z3IEfzPUQ03XN/EYREi3zVNsz2qQolbJPd7DonhLKRWXOMm4GKKx/MVYdVkI0oj5 Cn6wnJs6YlIuWnmO4ZOuVhMPDuoh0+I0oJXV/cE+welHrtPqbwXXjaiVcJG6It7+wX2c j6MmlrDnbXae9kTkYW3rWNz37s963I+AsZCFHdbhObLORKWUMmRRG+oiQruURrHMwXvy ZxNMs+0/CkJG5eBQ4NcRJosa17R9VY8ZODqJIFZAkhJRpd/uxYBqn8OAlpqxxSYkLwzl vfuEfCEMMCJC1o1KVkgCkk+o1rT2k0K8G3bWQNk+WDEtB8fuCbR87r3aWBSqjsiCj371 XZwg== X-Gm-Message-State: AOAM530tfqhZ5NOwe0TQEqjnUem9YmZBKClJRHpzbC99gfXNbvqxDls7 GhSdZKCEsNHgPrGIKqBKpP88IYtNM/s/mjbFCc/cqsGc5Ouddw== X-Google-Smtp-Source: ABdhPJyRxB//E8cpYlufFuz1zfk+qn2FmOrVPqLIQXcy/OeHWTz7sR3lDe0mkToPzkyt4gix79O3vOuNYNj1a/MJm+E= X-Received: by 2002:aca:1814:: with SMTP id h20mr12084460oih.150.1618735024546; Sun, 18 Apr 2021 01:37:04 -0700 (PDT) In-Reply-To: X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:204311 Archived-At: Am So., 18. Apr. 2021 um 10:32 Uhr schrieb Philipp Stephani : > > Am So., 18. Apr. 2021 um 02:01 Uhr schrieb Glenn Morris : > > > > Philipp Stephani wrote: > > > > > FYI, I've now pushed commit 568ce6826fa0aaa4d5dc95880cbdc0965dc07521 > > > to master which attempts to automatically collect this information to > > > ease debugging such failures. > > > > It doesn't report anything in this case since the user account does not > > have permission, and I normally disable core dumps (ulimit -c 0): > > > > Test emacs-tests/seccomp/allows-stdout condition: > > Info: Process output: > > > > Potentially relevant Seccomp audit events: > > Error opening config file (Permission denied) > > NOTE - using built-in logs: /var/log/audit/audit.log > > Error opening /var/log/audit/audit.log (Permission denied) > > > > Potentially useful coredump information: > > [...] > > No coredumps found. > > -- Notice: 1 systemd-coredump@.service unit is running, output > > may be incomplete. > > > > With my root hat on, the audit.log data is attached. > > > > With core dumps enabled: > > #0 0x00007f7b661fb967 __mmap (libc.so.6) > > #1 0x00007f7b5ff8001e sss_nss_mc_get_ctx (libnss_sss.so.2) > > Thanks! Looks like the problem is in > https://github.com/SSSD/sssd/blob/cd843dafe63589d0a77145445c454f6fc19dabae/src/sss_client/nss_mc_common.c#L171-L176, > where the code calls mmap with flags that we don't allow yet > (MAP_SHARED). > Does MAP_SHARED have any security implications? Otherwise we can allow > it right away. Does commit 2822246b5d8154d0166e17ffd28a1d85b57d68aa fix the issue?