diff options
Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_KVM/1999')
| -rw-r--r-- | gitlab/issues_text/target_missing/host_missing/accel_KVM/1999 | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/gitlab/issues_text/target_missing/host_missing/accel_KVM/1999 b/gitlab/issues_text/target_missing/host_missing/accel_KVM/1999 deleted file mode 100644 index 29f701250..000000000 --- a/gitlab/issues_text/target_missing/host_missing/accel_KVM/1999 +++ /dev/null @@ -1,51 +0,0 @@ -qemu got sigabrt when using vpp in guest and dpdk for qemu -Description of problem: -When set the interface up in vpp, the qemu process is crashed with signal sigabrt. - -After some debug, i have identified that the problem lies in the following function. - -```c -static int setup_routing_entry(struct kvm *kvm, - struct kvm_irq_routing_table *rt, - struct kvm_kernel_irq_routing_entry *e, - const struct kvm_irq_routing_entry *ue) -{ - struct kvm_kernel_irq_routing_entry *ei; - int r; - u32 gsi = array_index_nospec(ue->gsi, KVM_MAX_IRQ_ROUTES); - - /* - * Do not allow GSI to be mapped to the same irqchip more than once. - * Allow only one to one mapping between GSI and non-irqchip routing. - */ - hlist_for_each_entry(ei, &rt->map[gsi], link) - if (ei->type != KVM_IRQ_ROUTING_IRQCHIP || - ue->type != KVM_IRQ_ROUTING_IRQCHIP || - ue->u.irqchip.irqchip == ei->irqchip.irqchip) - return -EINVAL; - -``` - -I added some debug printk like following - -```c - hlist_for_each_entry(ei, &rt->map[gsi], link) - if (ei->type != KVM_IRQ_ROUTING_IRQCHIP || - ue->type != KVM_IRQ_ROUTING_IRQCHIP || - ue->u.irqchip.irqchip == ei->irqchip.irqchip){ - printk("ei->type: %u, KVM_IRQ_ROUTING_IRQCHIP: %u, ue->type: %u, ue->u.irqchip.irqchip: %u , ei->irqchip.irqchip: %u", ei->type, KVM_IRQ_ROUTING_IRQCHIP , ue->type, ue->u.irqchip.irqchip , ei->irqchip.irqchip); - return -EINVAL; - } -``` - -Then i got following in dmesg - -``` -[Thu Nov 23 09:29:10 2023] ei->type: 2, KVM_IRQ_ROUTING_IRQCHIP: 1, ue->type: 1, ue->u.irqchip.irqchip: 2 , ei->irqchip.irqchip: 4276097024 -[Thu Nov 23 09:29:10 2023] ei->type: 2, KVM_IRQ_ROUTING_IRQCHIP: 1, ue->type: 1, ue->u.irqchip.irqchip: 2 , ei->irqchip.irqchip: 4276097024 -``` -Steps to reproduce: -This is a kube-ovn + dpdk env, not easy to reproduce now.. -Additional information: -* I also file a bug on kernel.org: https://bugzilla.kernel.org/show_bug.cgi?id=218177 -* the libvirt xml file is also attached [instance.xml](/uploads/05b391046fdc1263fd7e63bcfab6f4fb/instance.xml) |