Bug 476521

Summary:	Coredump on start when no kvm modules is loaded
Product:	[Fedora] Fedora	Reporter:	Zdenek Kabelac <zkabelac>
Component:	qemu	Assignee:	Glauber Costa <gcosta>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	low
Version:	rawhide	CC:	berrange, clalance, dwmw2, gcosta, markmc, quintela, virt-maint
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-03-20 13:34:00 EDT	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Description Zdenek Kabelac 2008-12-15 07:44:18 EST

Description of problem:

I've just noticed that qemu-kvm generates coredump when it's started and kvm module is not inserted in memory - I think some nice error message would be better here:

#0  0x0000000000536851 in kvm_irqchip_in_kernel (kvm=0x0) at libkvm.c:1030
1030		return kvm->irqchip_in_kernel;
#1  0x0000000000463f3c in apic_init_ipi (s=0xc56c30) at /usr/src/debug/kvm-79/qemu/hw/apic.c:439
#2  0x0000000000464edc in apic_reset (opaque=0x0) at /usr/src/debug/kvm-79/qemu/hw/apic.c:952
#3  0x0000000000464f98 in apic_init (env=0xc5c010) at /usr/src/debug/kvm-79/qemu/hw/apic.c:995
#4  0x00000000004495f9 in pc_new_cpu (cpu=1, cpu_model=<value optimized out>, pci_enabled=1)
    at /usr/src/debug/kvm-79/qemu/hw/pc.c:793
#5  0x00000000004496e4 in pc_init1 (ram_size=<value optimized out>, vga_ram_size=16777216, 
    boot_device=0x538709 "cad", ds=0xb48e20, kernel_filename=0x0, kernel_cmdline=0x57294b "", 
    initrd_filename=0x0, pci_enabled=1, cpu_model=0x563fb6 "qemu64")
    at /usr/src/debug/kvm-79/qemu/hw/pc.c:839
#6  0x000000000044b0f4 in pc_init_pci (ram_size=0, vga_ram_size=68, 
    boot_device=0x4 <Address 0x4 out of bounds>, ds=0x44, 
    kernel_filename=0x78 <Address 0x78 out of bounds>, 
    kernel_cmdline=0x200000 <Address 0x200000 out of bounds>, initrd_filename=0x0, cpu_model=0x0)
    at /usr/src/debug/kvm-79/qemu/hw/pc.c:1211
#7  0x000000000040e0f8 in main (argc=<value optimized out>, argv=0x7fff68fb0448)
    at /usr/src/debug/kvm-79/qemu/vl.c:6870


Version-Release number of selected component (if applicable):
kvm-79-1.fc11.x86_64

How reproducible:


Steps to Reproduce:
1. do not load  kvm modules before start of qemu-kvm
2. start qemu-kvm
3.
  
Actual results:


Expected results:


Additional info:

Comment 1 Daniel Berrange 2009-03-11 08:38:44 EDT

Reassigning: The kvm package no longer exists in rawhide/F11, since it is now part of 'qemu'.

Comment 2 Mark McLoughlin 2009-03-20 13:34:00 EDT

This looks like a plausible fix:

  http://git.kernel.org/?p=linux/kernel/git/avi/kvm-userspace.git;a=commitdiff;h=16558b080d

Was in kvm-80, so closing as fixed in rawhide