From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24219 invoked by alias); 18 Oct 2006 21:48:56 -0000 Received: (qmail 23787 invoked by alias); 18 Oct 2006 21:48:47 -0000 Date: Wed, 18 Oct 2006 21:48:00 -0000 Message-ID: <20061018214847.23786.qmail@sourceware.org> From: "anil dot s dot keshavamurthy at intel dot com" To: systemtap@sources.redhat.com In-Reply-To: <20061018073138.3379.guij@cn.ibm.com> References: <20061018073138.3379.guij@cn.ibm.com> Reply-To: sourceware-bugzilla@sourceware.org Subject: [Bug runtime/3379] probe on "atomic_notifier_call_chain" crashes the system X-Bugzilla-Reason: AssignedTo Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q4/txt/msg00171.txt.bz2 ------- Additional Comments From anil dot s dot keshavamurthy at intel dot com 2006-10-18 21:48 ------- Subject: Re: probe on "atomic_notifier_call_chain" crashes the system On Wed, Oct 18, 2006 at 07:11:29PM -0000, dsmith at redhat dot com wrote: > > Bibo Mao volunteered to add kernel patches for the 3 problem areas I found. > Here's the specific one for atomic_notifier_call_chain(), which marks it with > "__kprobes": > > BTW, today I ran the stap -vv -e 'probe kernel.function("*") { log(".") }' on i386 box running 2.6.19-rc2-git2 and I had no issues. I even was able to do ls -l though the system was on its knees. I had left this running for ~10 minutes before I killed (and the stap module got unloaded cleanly). > > A problem we have is that atomic_notifier_call_chain() has been marked as > "__kprobes" in the upstream kernel, but hasn't made it to a released kernel from > my understanding (by either kernel.org or a vendor). Yup, this is in upstream kernel. > > I have no problem with adding "atomic_notifier_call_chain" to the blacklist in > the meantime. We need this in any case as the systemtap could be run on older version of the kernel too. -Anil Keshavamurthy -- http://sourceware.org/bugzilla/show_bug.cgi?id=3379 ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.