[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [BUG] Assertion '(sp == 0) || (peoi[sp-1].vector < vector)' failed at irq.c:1163
Den 17. jan. 2016 16:16, skrev Andrew Cooper: > On 17/01/16 14:50, Håkon Alstadheim wrote: >> Den 15. jan. 2016 12:05, skrev Andrew Cooper: >>> On 15/01/16 10:58, Håkon Alstadheim wrote: >>>> CPUINFO: >>>> vendor_id : GenuineIntel >>>> cpu family : 6 >>>> model : 63 >>>> model name : Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz >>>> >>>> # smbios-sys-info >>>> Libsmbios version: 2.2.28 >>>> Product Name: Z10PE-D8 WS >>>> Vendor: ASUSTeK COMPUTER INC. >>>> BIOS Version: 3101 >>>> >>>> >>>> I have been experiencing issues with domains with passed through PCIe >>>> devices since I first installed xen. Then at version 4.5.x , I'm now >>>> at 4.6.0 with gentoo patches. Crashes SEEM mostly related to this pci >>>> pass through and interrupts (usb-cards, sound cards). >>>> >>>> Recently the system has been more stable, whether it is because I pass >>>> through as few things as possible, or because of improvements in Xen I >>>> do not know. I have also taken to building with debug, which leads to >>>> more abrupt but less mysterious failures. Earlier (w/o debug and under >>>> xen 4.5 ) stuff would just gradually stop working and end up in total >>>> hang of everything. So, hey, things are improving :-b >>> This isn't the first time we have seen this on Haswell processors. Do >>> you have microcode loading set up? >>> >>> ~Andrew >>> >> Still happening with kernel-genkernel-x86_64-4.1.15-gentoo and updated >> cpu microcode, using microcode from 20151106. > Ok - I previously investigated this issue, but my repro evaporated from > under my feet with a firmware update, and I never got to the bottom of it. > > Please can you start with the following patch which will dump some more > information on crash. > > ---8<--- > diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c > index 1228568..588b562 100644 > --- a/xen/arch/x86/irq.c > +++ b/xen/arch/x86/irq.c > @@ -1165,6 +1165,13 @@ static void __do_IRQ_guest(int irq) > if ( action->ack_type == ACKTYPE_EOI ) > { > sp = pending_eoi_sp(peoi); > + if ( unlikely(!((sp == 0) || (peoi[sp-1].vector < vector))) ) > + { > + int p; > + for ( p = sp; p > 0; --p ) > + printk("**peoi[%d] = {%d, 0x%u, %d}\n", > + p-1, peoi[p-1].irq, peoi[p-1].vector, > peoi[p-1].ready); > + } > ASSERT((sp == 0) || (peoi[sp-1].vector < vector)); > ASSERT(sp < (NR_DYNAMIC_VECTORS-1)); > peoi[sp].irq = irq; > > Will do. Building now. Seems there is a line accidentally folded "peoi[p-1].ready);" belongs at the end of preceding line I presume? _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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