From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 29307 invoked by alias); 19 Feb 2020 21:39:09 -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 29277 invoked by uid 48); 19 Feb 2020 21:39:03 -0000 From: "fche at redhat dot com" To: systemtap@sourceware.org Subject: [Bug runtime/22265] on rawhide, we're getting a kernel panic Date: Wed, 19 Feb 2020 21:39:00 -0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: systemtap X-Bugzilla-Component: runtime X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: fche at redhat dot com X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: WORKSFORME X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: systemtap at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status cc resolution 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: 2020-q1/txt/msg00033.txt https://sourceware.org/bugzilla/show_bug.cgi?id=3D22265 Frank Ch. Eigler changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |fche at redhat dot com Resolution|--- |WORKSFORME --- Comment #4 from Frank Ch. Eigler --- The twenty.stp test is our most memory-hungry one. On a modern box, seeing such numbers: stap -vuwp2 -e 'probe kernel.function("*") {} probe module("*").function("*= ") {} probe kernel.function("*").call {} probe module("*").function("*").call = {} probe kernel.function("*").return {} probe module("*").function("*").return= {} probe kernel.function("*").inline {} probe module("*").function("*").inline= {}' > /dev/null Pass 1: parsed user script and 505 library scripts using 373036virt/143836res/13180shr/130332data kb, in 250usr/40sys/291real ms. Pass 2: analyzed script: 2722800 probes, 0 functions, 0 embeds, 0 globals u= sing 6493280virt/6016040res/14220shr/6250576data kb, in 58160usr/3890sys/102443r= eal ms. i.e., over 6 GB memory is used for probing every single function (+ all the= ir inlined copies) in the entire kernel. That's very high, but note that it doesn't even run any kernel module code. So if the kernel has a problem, a= nd it doesn't signal this as an ordinary OOM, it's a kernel bug, not a stap on= e. --=20 You are receiving this mail because: You are the assignee for the bug.