From owner-freebsd-dtrace@freebsd.org Mon Apr 25 00:05:32 2016 Return-Path: Delivered-To: freebsd-dtrace@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 21BD2B1C42F for ; Mon, 25 Apr 2016 00:05:32 +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 11D531A29 for ; Mon, 25 Apr 2016 00:05:32 +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 u3P05VXE097680 for ; Mon, 25 Apr 2016 00:05:31 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-dtrace@FreeBSD.org Subject: [Bug 207735] www/firefox: DTRACE no longer works since 41.0 Date: Mon, 25 Apr 2016 00:05:32 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Individual Port(s) X-Bugzilla-Version: Latest X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: markj@FreeBSD.org X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: markj@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? X-Bugzilla-Changed-Fields: 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-dtrace@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "A discussion list for developers working on DTrace in FreeBSD." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Apr 2016 00:05:32 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207735 --- Comment #5 from Mark Johnston --- (In reply to Jan Beich from comment #4) Yes. Sorry, I've just been very busy with work. I've spent more time looking at the code, and I think raising DTRACE_FUNCNAMELEN isn't a bad way to address the problem. I said in comment 3 that a buffer of size DTRACE_FUNCNAMELEN is created for every single probe, but this isn't right. It's only used when passing probe descriptions between userland and = the kernel, for instance when running dtrace -l, or when creating an enabling. I'll look at DTrace memory usage with and without a change that doubles this constant. Assuming I haven't missed anything, the difference should not be significant. I'll also modify the DOF validation code so that we simply skip probes with excessively long function names. --=20 You are receiving this mail because: You are on the CC list for the bug.=