On 29.11.18 13:33, Greg KH wrote:
> On Thu, Nov 08, 2018 at 09:41:00AM +0100, Janosch Frank wrote:
>> From: Janosch Frank <frankja@xxxxxxxxxx>
>>
>> Userspace could have munmapped the area before doing unmapping from the
>> gmap. This would leave us with a valid vmaddr, but an invalid vma from
>> which we would try to zap memory.
>>
>> Let's check before using the vma.
>>
>> Fixes: 1e133ab296f3 ("s390/mm: split arch/s390/mm/pgtable.c")
>> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
>> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
>> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>> CC: stable@xxxxxxxxxxxxxxx # 4.6+
>> ---
>> arch/s390/mm/gmap.c | 2 ++
>> 1 file changed, 2 insertions(+)
>
> Please always include the upstream git commit id so that I have a clue
> as to what it is when doing the backport.
>
It's:
1843abd03250115af6cec0892683e70cf2297c25
Will do next time, or rather next time we won't forget to CC stable :-)
Attachment:
signature.asc
Description: OpenPGP digital signature
