From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14350 invoked by alias); 15 Dec 2011 16:01:58 -0000 Received: (qmail 14338 invoked by uid 22791); 15 Dec 2011 16:01:57 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO sourceware.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 15 Dec 2011 16:01:44 +0000 From: "dsmith at redhat dot com" To: systemtap@sourceware.org Subject: [Bug tapsets/13501] Some arguments for 'stap -L "*, *.*, *.*.*" ' probe points not found Date: Thu, 15 Dec 2011 16:14:00 -0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: systemtap X-Bugzilla-Component: tapsets X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dsmith at redhat dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: systemtap at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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 X-SW-Source: 2011-q4/txt/msg00369.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=13501 --- Comment #3 from David Smith 2011-12-15 16:01:27 UTC --- The second set of RHEL6 errors comes from the the 'netdev.change_rx_flag' probe alias: ==== # stap -L 'netdev.change_rx_flag' semantic error: not accessible at this address (0xffffffff814483dc, dieoffset: 0x3c69de1): identifier '$dev' at /usr/local/share/systemtap/tapset/networking.stp:159:29 source: dev_name = get_netdev_name($dev) ^ semantic error: not accessible at this address (0xffffffff814483dc, dieoffset: 0x3c69dd8): identifier '$flags' at :160:10 source: flags = $flags ^ semantic error: unresolved type : identifier 'flags' at :160:2 source: flags = $flags ^ netdev.change_rx_flag dev_name:string ==== This happens because the underlying kernel function 'dev_change_rx_flags' is inlined on RHEL6 and systemtap can't find the arguments: ==== # stap -L 'kernel.function("dev_change_rx_flags").*' kernel.function("dev_change_rx_flags@net/core/dev.c:3818").inline ==== On f15, systemtap can find the arguments to both the real function call and the inlined version: ==== stap -L 'kernel.function("dev_change_rx_flags").*' kernel.function("dev_change_rx_flags@net/core/dev.c:4360").call $dev:struct net_device* $flags:int kernel.function("dev_change_rx_flags@net/core/dev.c:4360").return $dev:struct net_device* $flags:int ==== -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.