>-----Original Message----- >From: Paul Gortmaker [mailto:paul.gortmaker@xxxxxxxxxxxxx] >Sent: Wednesday, November 20, 2013 4:46 PM >To: Jan Kiszka; Frederich, Jens; linux-rt-users@xxxxxxxxxxxxxxx >Cc: linux-kernel@xxxxxxxxxxxxxxx >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 >> -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
