Re: WARNING: at /usr/src/modules/kvm/mmu.c:390 account_shadowed()

Thomas Cataldo
2008-04-22T22:11:45Z

On Mon, Apr 21, 2008 at 9:57 PM, Thomas Cataldo
<thomas.cataldo@aliasource.fr> wrote:
> Hi,
>
> I am running kvm-66 on top of a debian sid host with 2.6.24 (intel 32bit host).
>
> Got the following in my logs today :
>
> Apr 21 17:55:01 buffy kernel: WARNING: at
> /usr/src/modules/kvm/mmu.c:390 account_shadowed()
> Apr 21 17:55:01 buffy kernel: Pid: 21416, comm: kvm Tainted: P
> 2.6.24-1-686 #1
> Apr 21 17:55:01 buffy kernel: [<f8d07a36>] kvm_mmu_get_page+0x42d/0x447 [kvm]
> Apr 21 17:55:01 buffy kernel: [<f8d08cca>] kvm_mmu_load+0xdf/0x15c [kvm]
> Apr 21 17:55:01 buffy kernel: [<f8affe41>]
> vmx_queue_exception+0x0/0x33 [kvm_intel]
> Apr 21 17:55:01 buffy kernel: [<f8d05521>]
> kvm_arch_vcpu_ioctl_run+0x233/0x5a9 [kvm]
> Apr 21 17:55:01 buffy kernel: [<f8d013aa>] kvm_vcpu_ioctl+0xe4/0x34c [kvm]
> Apr 21 17:55:01 buffy kernel: [<c0159078>] delayacct_end+0x70/0x77
> Apr 21 17:55:01 buffy kernel: [<c015aa19>] sync_page+0x0/0x3b
> Apr 21 17:55:01 buffy kernel: [<c0159388>] __delayacct_blkio_end+0x5b/0x5f
> Apr 21 17:55:01 buffy kernel: [<c02bcaab>] io_schedule+0x64/0x80
> Apr 21 17:55:01 buffy kernel: [<c011e07d>] enqueue_entity+0x2b/0x3d
> Apr 21 17:55:01 buffy kernel: [<c0115343>] apic_wait_icr_idle+0xe/0x15
> Apr 21 17:55:01 buffy kernel: [<c011e0a5>] enqueue_task_fair+0x16/0x24
> Apr 21 17:55:01 buffy kernel: [<c011d643>] enqueue_task+0x52/0x5d
> Apr 21 17:55:01 buffy kernel: [<c011de9e>] resched_task+0x52/0x54
> Apr 21 17:55:01 buffy kernel: [<c011f459>] try_to_wake_up+0x2b8/0x2c2
> Apr 21 17:55:01 buffy kernel: [<c011d47e>] __wake_up_common+0x32/0x5c
> Apr 21 17:55:01 buffy kernel: [<c011eecc>] __wake_up+0x32/0x42
> Apr 21 17:55:01 buffy kernel: [<c013e25c>] wake_futex+0x3b/0x45
> Apr 21 17:55:01 buffy kernel: [<c013e4de>] futex_wake+0x81/0xb0
> Apr 21 17:55:01 buffy kernel: [<c013f097>] do_futex+0x77/0x983
> Apr 21 17:55:01 buffy kernel: [<c011d9ca>] update_curr+0x62/0xef
> Apr 21 17:55:01 buffy kernel: [<c0103044>] __switch_to+0x9d/0x11d
> Apr 21 17:55:01 buffy kernel: [<f8d012c6>] kvm_vcpu_ioctl+0x0/0x34c [kvm]
> Apr 21 17:55:01 buffy kernel: [<c018285b>] do_ioctl+0x1f/0x62
> Apr 21 17:55:01 buffy kernel: [<c0182ad5>] vfs_ioctl+0x237/0x249
> Apr 21 17:55:01 buffy kernel: [<c0182b2c>] sys_ioctl+0x45/0x5d
> Apr 21 17:55:01 buffy kernel: [<c0103e5e>] sysenter_past_esp+0x6b/0xa1
>
>
> Regards,
> Thomas.
>

as I got no reply, I guess it is a bad setup on my part. If that might
help, this happenned while I was doing a "make -j" on webkit svn tree
(ie. heavy c++ compilation workload) .