[ kernel 3.5 ] Kernel bug when using kvm

2012-07-16 Thread nicolas prochazka
Hello, with linux kernel 3.5rc6 and 3.5rc7 I do not test with other kernel 3.5. On linux kernel 3.3.8 , threre is no problem. If I start qemu-kvm process, system is overload and dmesg : BUG: unable to handle kernel paging request at 0001003b IP: [8119f694]

Re: [ kernel 3.5 ] Kernel bug when using kvm

2012-07-16 Thread Avi Kivity
On 07/16/2012 02:06 PM, nicolas prochazka wrote: Hello, with linux kernel 3.5rc6 and 3.5rc7 I do not test with other kernel 3.5. On linux kernel 3.3.8 , threre is no problem. If I start qemu-kvm process, system is overload and dmesg : BUG: unable to handle kernel paging request at

Re: [ kernel 3.5 ] Kernel bug when using kvm

2012-07-16 Thread nicolas prochazka
No, It is not 100% reproductible, I'm trying to find the case, but : Now when i start a qemu-kvm , there is a kvm-pit/ which takes a lot of cpu time ( ~ 20 %) , ( not with kernel 3.3.8 ) for the complete stack trace, which kernel options should i set, i've already kernel debug . Regards,

Re: [ kernel 3.5 ] Kernel bug when using kvm

2012-07-16 Thread Avi Kivity
On 07/16/2012 05:37 PM, nicolas prochazka wrote: No, It is not 100% reproductible, I'm trying to find the case, but : Now when i start a qemu-kvm , there is a kvm-pit/ which takes a lot of cpu time ( ~ 20 %) , ( not with kernel 3.3.8 ) for the complete stack trace, which kernel

Re: [ kernel 3.5 ] Kernel bug when using kvm

2012-07-16 Thread nicolas prochazka
sorry, i recompile kernel with some option, and crash again : ( it seems i need to run a lot of qemu process to bug ) [ 3117.379546] BUG: unable to handle kernel paging request at 0001003b [ 3117.379783] IP: [811a3654] tid_fd_revalidate+0x84/0x1a0 [ 3117.379978] PGD 6ea4e0067 PUD

Oops in proc_fd_instantiate (was: Re: [ kernel 3.5 ] Kernel bug when using kvm)

2012-07-16 Thread Avi Kivity
On 07/16/2012 05:46 PM, nicolas prochazka wrote: sorry, i recompile kernel with some option, and crash again : ( it seems i need to run a lot of qemu process to bug ) [ 3117.379546] BUG: unable to handle kernel paging request at 0001003b [ 3117.379783] IP: [811a3654]