From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: [Kernel Panic] 3.10.10-rt7 Date: Wed, 20 Nov 2013 13:34:10 +0100 Message-ID: <528CAC42.1060706@siemens.com> References: <9B7F15AA4177464A8FAB5BE79B14288B88967CEF@vistrex3.vi.vector.int> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "linux-kernel@vger.kernel.org" To: "Frederich, Jens" , "linux-rt-users@vger.kernel.org" , Paul Gortmaker Return-path: In-Reply-To: <9B7F15AA4177464A8FAB5BE79B14288B88967CEF@vistrex3.vi.vector.int> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org On 2013-11-20 13:26, Frederich, Jens wrote: > Hello, > > I got a Kernel panic by some long time stress tests. Look here: http://dy.cx/pqP7M. Ah, that should be http://thread.gmane.org/gmane.linux.kernel/1564783 Paul, was there any follow-up patch on this topic? Jan > > Furthermore I got sporadic some BUG messages: > > [ 1128.358971] BUG: scheduling while atomic: swapper/0/0/0x00010002 > [ 1128.358982] Preemption disabled at:[] cpu_startup_entry+0x17a/0x300 > > Hardware > -------- > > My system is a i7 with 4 GB RAM congatec evalboard. > > Setup > ----- > > On the system runs Linux RT (text mode) 3.10.10-rt7 with 1 GB RAM and a > Windows 7 KVM/QEMU (Qemu 1.6.1) guest with 3 GB RAM. Each system has it own > ethernet card. The Win 7 guest uses it per pci pass-through. The Win 7 is > pinned to core 2,3. > > Scenario > -------- > > We sending UDP packages every 1 msec on the Linux side. The UDP sender process > has real time prio 80 and the ethernet driver 90. At the same time we are > stressing Win 7. Memory stress - allocate as much as possible and do memset(), > then CPU stress - high CPU load, then Kernel DPC stress - high load thread at > DPC level and ethernet stress - send UDP packages every milliseconds. I got the > panic after 45 minutes. It seems that is correlates with the ethernet stress. > > Can anybody help me? > > thanks > Jens -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux