diff options
Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_KVM/1999.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_KVM/1999.toml | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_KVM/1999.toml b/gitlab/issues/target_missing/host_missing/accel_KVM/1999.toml new file mode 100644 index 000000000..6dd78bdc5 --- /dev/null +++ b/gitlab/issues/target_missing/host_missing/accel_KVM/1999.toml @@ -0,0 +1,59 @@ +id = 1999 +title = "qemu got sigabrt when using vpp in guest and dpdk for qemu" +state = "opened" +created_at = "2023-11-23T06:04:09.084Z" +closed_at = "n/a" +labels = ["accel: KVM"] +url = "https://gitlab.com/qemu-project/qemu/-/issues/1999" +host-os = "Rockylinux 8" +host-arch = "x86" +qemu-version = "qemu-kvm-7.2.0-14.el9 (in a container)" +guest-os = "Ubuntu 22.04.3 LTS" +guest-arch = "x86" +description = """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, +\t\t\t struct kvm_irq_routing_table *rt, +\t\t\t struct kvm_kernel_irq_routing_entry *e, +\t\t\t const struct kvm_irq_routing_entry *ue) +{ +\tstruct kvm_kernel_irq_routing_entry *ei; +\tint r; +\tu32 gsi = array_index_nospec(ue->gsi, KVM_MAX_IRQ_ROUTES); + +\t/* +\t * Do not allow GSI to be mapped to the same irqchip more than once. +\t * Allow only one to one mapping between GSI and non-irqchip routing. +\t */ +\thlist_for_each_entry(ei, &rt->map[gsi], link) +\t\tif (ei->type != KVM_IRQ_ROUTING_IRQCHIP || +\t\t ue->type != KVM_IRQ_ROUTING_IRQCHIP || +\t\t ue->u.irqchip.irqchip == ei->irqchip.irqchip) +\t\t\treturn -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 +```""" +reproduce = """This is a kube-ovn + dpdk env, not easy to reproduce now..""" +additional = """* 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)""" |