kvm_rmap_desc: Can't free all objects

kvm_rmap_desc: Can't free all objects

[Dong, Eddie]

Avi:
	Time to time, I see this error message, any typo exist?
thx,eddie


slab error in kmem_cache_destroy(): cache `kvm_rmap_desc': Can't free
all objects

Call Trace:
 [<ffffffff8027c0fe>] kmem_cache_destroy+0x93/0xdc
 [<ffffffff88009125>] :kvm:kvm_mmu_module_exit+0x23/0x37
 [<ffffffff88010360>] :kvm:kvm_exit+0x26/0x31
 [<ffffffff8024f026>] sys_delete_module+0x1b4/0x1e5
 [<ffffffff8034eee3>] __up_write+0x14/0x108
 [<ffffffff8026d2a3>] sys_munmap+0x4b/0x58
 [<ffffffff8020b42e>] system_call+0x7e/0x83

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Re: kvm_rmap_desc: Can't free all objects

[Avi Kivity]

Dong, Eddie wrote:
> Avi:
> 	Time to time, I see this error message, any typo exist?
> thx,eddie
>
>
> slab error in kmem_cache_destroy(): cache `kvm_rmap_desc': Can't free
> all objects
>
> Call Trace:
>  [<ffffffff8027c0fe>] kmem_cache_destroy+0x93/0xdc
>  [<ffffffff88009125>] :kvm:kvm_mmu_module_exit+0x23/0x37
>  [<ffffffff88010360>] :kvm:kvm_exit+0x26/0x31
>  [<ffffffff8024f026>] sys_delete_module+0x1b4/0x1e5
>  [<ffffffff8034eee3>] __up_write+0x14/0x108
>  [<ffffffff8026d2a3>] sys_munmap+0x4b/0x58
>  [<ffffffff8020b42e>] system_call+0x7e/0x83
>   

I saw this yesterday and an debugging it now...

It's caused by the mmu not handling permissions changing on a pde correctly.


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: kvm_rmap_desc: Can't free all objects

[Avi Kivity]

Avi Kivity wrote:
> Dong, Eddie wrote:
>   
>> Avi:
>> 	Time to time, I see this error message, any typo exist?
>> thx,eddie
>>
>>
>> slab error in kmem_cache_destroy(): cache `kvm_rmap_desc': Can't free
>> all objects
>>
>> Call Trace:
>>  [<ffffffff8027c0fe>] kmem_cache_destroy+0x93/0xdc
>>  [<ffffffff88009125>] :kvm:kvm_mmu_module_exit+0x23/0x37
>>  [<ffffffff88010360>] :kvm:kvm_exit+0x26/0x31
>>  [<ffffffff8024f026>] sys_delete_module+0x1b4/0x1e5
>>  [<ffffffff8034eee3>] __up_write+0x14/0x108
>>  [<ffffffff8026d2a3>] sys_munmap+0x4b/0x58
>>  [<ffffffff8020b42e>] system_call+0x7e/0x83
>>   
>>     
>
> I saw this yesterday and an debugging it now...
>
> It's caused by the mmu not handling permissions changing on a pde correctly.
>
>   

This is now fixed.

-- 
error compiling committee.c: too many arguments to function


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