From owner-freebsd-bugs@freebsd.org Thu May 11 17:19:45 2017 Return-Path: Delivered-To: freebsd-bugs@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 8A7F3D68522 for ; Thu, 11 May 2017 17:19:45 +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 6CC9E1732 for ; Thu, 11 May 2017 17:19:45 +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 v4BHJidp027101 for ; Thu, 11 May 2017 17:19:45 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 219216] sched_bind() blocks if the entropy pool is starved Date: Thu, 11 May 2017 17:19:45 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: kami@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: attachments.created Message-ID: In-Reply-To: References: 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-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 May 2017 17:19:45 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219216 --- Comment #3 from Dominic Fandrey --- Created attachment 182516 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D182516&action= =3Dedit shell script to reproduce the problem This script reproduces PR 219216. You need to be on an intel platform with coretemp loaded. Every .5 seconds it prints all core temperatures. Every 5 seconds it consumes 1 GiB from /dev/random. If you are affected you will see access to the dev.cpu.%d.temperature sysctls start to stutter and freeze. To terminate the script press CTRL+C and move your mouse to feed some entropy into the RNG. --=20 You are receiving this mail because: You are the assignee for the bug.=