From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262195AbTEHWgz (ORCPT ); Thu, 8 May 2003 18:36:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262192AbTEHWff (ORCPT ); Thu, 8 May 2003 18:35:35 -0400 Received: from Hell.WH8.tu-dresden.de ([141.30.225.3]:49315 "EHLO Hell.WH8.TU-Dresden.De") by vger.kernel.org with ESMTP id S262189AbTEHWf1 (ORCPT ); Thu, 8 May 2003 18:35:27 -0400 Date: Fri, 9 May 2003 00:47:59 +0200 From: "Udo A. Steinberg" To: Linux Kernel Mailing List Subject: ptrace Issues Message-Id: <20030509004759.46182eca.us15@os.inf.tu-dresden.de> Organization: Fiasco Core Team X-GPG-Key: 1024D/233B9D29 (wwwkeys.pgp.net) X-GPG-Fingerprint: CE1F 5FDD 3C01 BE51 2106 292E 9E14 735D 233B 9D29 X-Fiasco-Rulez: Yes X-Mailer: X-Mailer 5.0 Gold X-Outlook: Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="pgp-sha1"; boundary="Nw5HF0=.gRDBs4oU" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --Nw5HF0=.gRDBs4oU Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Hi all, I have discovered that recently I can no longer attach via strace to already running processes for a long time. Specifically I have a daemon which sleeps in select and periodically wakes up from SIGALRM signals. As soon as a signal hits, strace quits on 2.5.69, however, it works fine on 2.4.21-rc. Can someone shed some light on what's going on? root@Corona:~> strace -p 527 --- SIGSTOP (Stopped (signal)) --- --- SIGSTOP (Stopped (signal)) --- select(7, [0 3 6], [], NULL, NULL) = ? ERESTARTNOHAND (To be restarted) --- SIGALRM (Alarm clock) --- root@Corona:~> echo $? 0 -Udo. --Nw5HF0=.gRDBs4oU Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.3.1 (GNU/Linux) iD8DBQE+ut6inhRzXSM7nSkRAtqvAJ4k0OyA8uU8rZXmh1n5HyhQJZ9myACfcKym +CJnLEQis/dNxORkQS3zAEc= =nuvI -----END PGP SIGNATURE----- --Nw5HF0=.gRDBs4oU--