On 10/05/2012 04:33 PM, Jiri Slaby wrote:
> Hi,
>
> I'm getting this warning while running qemu-kvm 1.2.rc1 on the top of
> 3.6.0-next-20121001:
> WARNING: at virt/kvm/kvm_main.c:1325 kvm_release_pfn_clean+0x70/0x80()
> Hardware name: To Be Filled By O.E.M.
> Modules linked in: nls_cp437 vfat fat dvb_usb_dib0700 dib0090 dib7000p
> dib7000m dib0070 dib8000 dib3000mc dibx000_common microcode
> Pid: 11848, comm: qemu-kvm Tainted: GW
> 3.6.0-next-20121001_64+ #70
> Call Trace:
> [] warn_slowpath_common+0x7f/0xc0
> [] warn_slowpath_null+0x1a/0x20
> [] kvm_release_pfn_clean+0x70/0x80
> [] paging64_page_fault+0x686/0x830
> [] ? paging64_gva_to_gpa+0x35/0x80
> [] kvm_mmu_page_fault+0x31/0x100
> [] handle_exception+0x231/0x3d0
> [] vmx_handle_exit+0xcc/0x780
> [] kvm_arch_vcpu_ioctl_run+0x444/0xf60
> [] ? kvm_arch_vcpu_load+0x57/0x1b0
> [] kvm_vcpu_ioctl+0x472/0x610
> [] ? fsnotify+0x24b/0x340
> [] do_vfs_ioctl+0x99/0x580
> [] ? pick_next_task_fair+0x13b/0x1a0
> [] ? __enqueue_entity+0x78/0x80
> [] ? kvm_on_user_return+0x64/0x70
> [] sys_ioctl+0x50/0x90
> [] system_call_fastpath+0x16/0x1b
>
> I.e. is_error_pfn(pfn) is true.
Jiri, thanks for your report!
This is a known bug which can be fixed by this patch:
https://lkml.org/lkml/2012/9/21/46
But this patch need be improved, i will post the new version after
full test.
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