From owner-freebsd-threads@freebsd.org Tue Nov 15 17:01:37 2016 Return-Path: Delivered-To: freebsd-threads@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7FA5AC43C3A for ; Tue, 15 Nov 2016 17:01:37 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 6FA981955 for ; Tue, 15 Nov 2016 17:01:37 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id uAFH1bUN002888 for ; Tue, 15 Nov 2016 17:01:37 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-threads@FreeBSD.org Subject: [Bug 214540] pam_exec isn't multithreading save Date: Tue, 15 Nov 2016 17:01:37 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: threads X-Bugzilla-Version: 11.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: crest@bultmann.eu X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-threads@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-threads@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Threading on FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Nov 2016 17:01:37 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D214540 Bug ID: 214540 Summary: pam_exec isn't multithreading save Product: Base System Version: 11.0-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: threads Assignee: freebsd-threads@FreeBSD.org Reporter: crest@bultmann.eu The pam_exec module uses vfork()+execve() and waitpid() to spawn a child process and wait for its completion. This is a race condition in a multithreaded process using PAM. An other thread could reap the process for= ked by pam_exec in which case waitpid() would either fail because there is no v= alid pid to wait for or wait for the wrong process if it happens to reuse the pi= d. The correct solution would be to use pdfork() and wait with kevent() on the (EVFILT_PROCDESC, process descriptor) event. --=20 You are receiving this mail because: You are the assignee for the bug.= From owner-freebsd-threads@freebsd.org Sat Nov 19 12:40:29 2016 Return-Path: Delivered-To: freebsd-threads@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9E887C4AB16 for ; Sat, 19 Nov 2016 12:40:29 +0000 (UTC) (envelope-from mike@norango.com) Received: from webserver.norango.com (norango.com [217.174.249.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id EFC0B168C for ; Sat, 19 Nov 2016 12:40:28 +0000 (UTC) (envelope-from mike@norango.com) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=norango.com ; s=default; h=Content-Type:MIME-Version:Date:Subject:To:From:Message-ID: Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=Sqhuct8Q60nWWw8LlYKb5RoTw/ftXaPTwlAHSr5HP4U=; b=1AuGPdfom2GQ3kn6tI7ErooGor EuOrDJVsZ64X7CXtum6hrcJiZCY9mc82DyEa/jh5woOST2OKy3dqjVVQl50k+8cBT+f2m7LU1FoRn EkrYn5hixF8br5O3/SlSVB3djRi+KY4bTjSoCw6bNP1+DHxj7YGziXga3Ccr3UliE9F3yRF3QEAR8 nqBpvx0mMfh6otsyrx0Fm/9vR7MFcwCRWwcC5nkbZnCogFo5TwBvyu36tF9CeYbSX3TVZ/wmW3T0o AQTedHLDzpK/E9kgrJh5b/pjBcXZMK5bBz8tfrlhyr+akYJlPWayWGL+U00QGlSqCrPc0etEqSXRs 8waWpWtA==; Received: from [218.8.118.39] (port=45337 helo=egmauknudxdayyrh) by webserver.norango.com with esmtpsa (TLSv1:ECDHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1c84wJ-0002aL-Hz; Sat, 19 Nov 2016 12:40:26 +0000 Message-ID: From: "FUCK EXPRESS" To: , , , , , , Subject: Easily find one night girlfriend! 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