* [Kernel Panic] 3.10.10-rt7 @ 2013-11-20 12:26 Frederich, Jens 2013-11-20 12:34 ` Jan Kiszka 0 siblings, 1 reply; 4+ messages in thread From: Frederich, Jens @ 2013-11-20 12:26 UTC (permalink / raw) To: linux-rt-users@vger.kernel.org; +Cc: linux-kernel@vger.kernel.org Hello, I got a Kernel panic by some long time stress tests. Look here: http://dy.cx/pqP7M. Furthermore I got sporadic some BUG messages: [ 1128.358971] BUG: scheduling while atomic: swapper/0/0/0x00010002 [ 1128.358982] Preemption disabled at:[<ffffffff810dfb8a>] 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 ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Kernel Panic] 3.10.10-rt7 2013-11-20 12:26 [Kernel Panic] 3.10.10-rt7 Frederich, Jens @ 2013-11-20 12:34 ` Jan Kiszka 2013-11-20 15:46 ` Paul Gortmaker 0 siblings, 1 reply; 4+ messages in thread From: Jan Kiszka @ 2013-11-20 12:34 UTC (permalink / raw) To: Frederich, Jens, linux-rt-users@vger.kernel.org, Paul Gortmaker Cc: linux-kernel@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:[<ffffffff810dfb8a>] 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 ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Kernel Panic] 3.10.10-rt7 2013-11-20 12:34 ` Jan Kiszka @ 2013-11-20 15:46 ` Paul Gortmaker 2013-11-21 8:12 ` Frederich, Jens 0 siblings, 1 reply; 4+ messages in thread From: Paul Gortmaker @ 2013-11-20 15:46 UTC (permalink / raw) To: Jan Kiszka, Frederich, Jens, linux-rt-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org On 13-11-20 07:34 AM, Jan Kiszka wrote: > 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? Yeah, from the rt-summit [ http://lwn.net/Articles/572740/ ] it is on me to get those simple wait queue patches mainlined (and then the local_bh stuff). Once I've got that done, I'll look at spending some time on 3.12-rt kvm patches -- in the meantime, you are right, the screenshot shows that his 3.10-rt needs the straightforward conversion of vpcu->wq to simple wait. Paul. -- > > Jan > >> >> Furthermore I got sporadic some BUG messages: >> >> [ 1128.358971] BUG: scheduling while atomic: swapper/0/0/0x00010002 >> [ 1128.358982] Preemption disabled at:[<ffffffff810dfb8a>] 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 > ^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: [Kernel Panic] 3.10.10-rt7 2013-11-20 15:46 ` Paul Gortmaker @ 2013-11-21 8:12 ` Frederich, Jens 0 siblings, 0 replies; 4+ messages in thread From: Frederich, Jens @ 2013-11-21 8:12 UTC (permalink / raw) To: Paul Gortmaker, Jan Kiszka, linux-rt-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org >-----Original Message----- >From: Paul Gortmaker [mailto:paul.gortmaker@windriver.com] >Sent: Wednesday, November 20, 2013 4:46 PM >To: Jan Kiszka; Frederich, Jens; linux-rt-users@vger.kernel.org >Cc: linux-kernel@vger.kernel.org >Subject: Re: [Kernel Panic] 3.10.10-rt7 > >On 13-11-20 07:34 AM, Jan Kiszka wrote: >> 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? > >Yeah, from the rt-summit [ http://lwn.net/Articles/572740/ ] it is on >me >to get those simple wait queue patches mainlined (and then the >local_bh >stuff). Once I've got that done, I'll look at spending some time on >3.12-rt >kvm patches -- in the meantime, you are right, the screenshot shows >that his >3.10-rt needs the straightforward conversion of vpcu->wq to simple >wait. > It's good to hear. Paul, can you estimate when the kvm patches is ready, so that I can test it? thanks Jens >Paul. >-- > >> >> Jan >> >>> >>> Furthermore I got sporadic some BUG messages: >>> >>> [ 1128.358971] BUG: scheduling while atomic: swapper/0/0/0x00010002 >>> [ 1128.358982] Preemption disabled at:[<ffffffff810dfb8a>] >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 >> ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-11-21 8:12 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2013-11-20 12:26 [Kernel Panic] 3.10.10-rt7 Frederich, Jens 2013-11-20 12:34 ` Jan Kiszka 2013-11-20 15:46 ` Paul Gortmaker 2013-11-21 8:12 ` Frederich, Jens
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