From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 65665 invoked by alias); 24 Nov 2019 08:57:14 -0000 Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org Received: (qmail 65635 invoked by uid 48); 24 Nov 2019 08:57:11 -0000 From: "avi@cloudius-systems.com" To: systemtap@sourceware.org Subject: [Bug dyninst/24884] stapdyn crashes with a segmentation fault Date: Sun, 24 Nov 2019 08:57:00 -0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: systemtap X-Bugzilla-Component: dyninst X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: avi@cloudius-systems.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: systemtap at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: 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: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2019-q4/txt/msg00049.txt.bz2 https://sourceware.org/bugzilla/show_bug.cgi?id=3D24884 --- Comment #8 from Avi Kivity --- I imagine that if you notice that a key component is always tid() (except a= n in an end probe) then you can rewrite the global map as a thread local map with extra magic for the end probe. But it seems fragile, as soon as you violate one of the constraints even a = tiny bit, it stops working with no feedback to the user about what went wrong. A= nd when it stops working, it's likely to have a huge impact on the running workload. --=20 You are receiving this mail because: You are the assignee for the bug.