On 6/21/19 4:33 AM, Vlastimil Babka wrote:
On 6/20/19 6:08 PM, Yang Shi wrote:
On 6/20/19 12:18 AM, Vlastimil Babka wrote:
On 6/19/19 8:19 PM, Yang Shi wrote:
This is getting even more muddy TBH. Is there any reason that we
have to
handle this problem during the isolation phase rather the
On 6/20/19 6:08 PM, Yang Shi wrote:
>
>
> On 6/20/19 12:18 AM, Vlastimil Babka wrote:
>> On 6/19/19 8:19 PM, Yang Shi wrote:
>> This is getting even more muddy TBH. Is there any reason that we
>> have to
>> handle this problem during the isolation phase rather the migration?
> I t
On 6/20/19 12:18 AM, Vlastimil Babka wrote:
On 6/19/19 8:19 PM, Yang Shi wrote:
This is getting even more muddy TBH. Is there any reason that we
have to
handle this problem during the isolation phase rather the migration?
I think it was already said that if pages can't be isolated, then
migr
On 6/19/19 8:19 PM, Yang Shi wrote:
This is getting even more muddy TBH. Is there any reason that we
have to
handle this problem during the isolation phase rather the migration?
>>> I think it was already said that if pages can't be isolated, then
>>> migration phase won't process t
On 6/19/19 9:21 AM, Yang Shi wrote:
On 6/19/19 1:22 AM, Vlastimil Babka wrote:
On 6/19/19 7:21 AM, Michal Hocko wrote:
On Tue 18-06-19 14:13:16, Yang Shi wrote:
[...]
I used to have !__PageMovable(page), but it was removed since the
aforementioned reason. I could add it back.
For the tem
On 6/19/19 1:18 AM, Vlastimil Babka wrote:
On 6/18/19 7:06 PM, Yang Shi wrote:
The BUG_ON was removed by commit
d44d363f65780f2ac2ec672164555af54896d40d ("mm: don't assume anonymous
pages have SwapBacked flag") since 4.12.
Perhaps that commit should be sent to stable@ ? Although with
VM_BUG_
On 6/19/19 1:22 AM, Vlastimil Babka wrote:
On 6/19/19 7:21 AM, Michal Hocko wrote:
On Tue 18-06-19 14:13:16, Yang Shi wrote:
[...]
I used to have !__PageMovable(page), but it was removed since the
aforementioned reason. I could add it back.
For the temporary off LRU page, I did a quick sear
On 6/19/19 7:21 AM, Michal Hocko wrote:
> On Tue 18-06-19 14:13:16, Yang Shi wrote:
> [...]
>>
>> I used to have !__PageMovable(page), but it was removed since the
>> aforementioned reason. I could add it back.
>>
>> For the temporary off LRU page, I did a quick search, it looks the most
>> paths h
On 6/18/19 7:06 PM, Yang Shi wrote:
> The BUG_ON was removed by commit
> d44d363f65780f2ac2ec672164555af54896d40d ("mm: don't assume anonymous
> pages have SwapBacked flag") since 4.12.
Perhaps that commit should be sent to stable@ ? Although with
VM_BUG_ON() this is less critical than plain BUG
On Tue 18-06-19 14:13:16, Yang Shi wrote:
[...]
> > > > > Change migrate_page_add() to check if the page is movable or not, if
> > > > > it
> > > > > is unmovable, just return -EIO. We don't have to check non-LRU
> > > > > movable
> > > > > pages since just zsmalloc and virtio-baloon support thi
On 6/18/19 11:28 AM, Michal Hocko wrote:
On Tue 18-06-19 10:06:54, Yang Shi wrote:
On 6/18/19 6:02 AM, Michal Hocko wrote:
[Cc networking people - see a question about setsockopt below]
On Tue 18-06-19 02:48:10, Yang Shi wrote:
When running syzkaller internally, we ran into the below bug
On Tue 18-06-19 10:06:54, Yang Shi wrote:
>
>
> On 6/18/19 6:02 AM, Michal Hocko wrote:
> > [Cc networking people - see a question about setsockopt below]
> >
> > On Tue 18-06-19 02:48:10, Yang Shi wrote:
> > > When running syzkaller internally, we ran into the below bug on 4.9.x
> > > kernel:
>
On 6/18/19 6:02 AM, Michal Hocko wrote:
[Cc networking people - see a question about setsockopt below]
On Tue 18-06-19 02:48:10, Yang Shi wrote:
When running syzkaller internally, we ran into the below bug on 4.9.x
kernel:
kernel BUG at mm/huge_memory.c:2124!
What is the BUG_ON because I d
[Cc networking people - see a question about setsockopt below]
On Tue 18-06-19 02:48:10, Yang Shi wrote:
> When running syzkaller internally, we ran into the below bug on 4.9.x
> kernel:
>
> kernel BUG at mm/huge_memory.c:2124!
What is the BUG_ON because I do not see any BUG_ON neither in v4.9 n
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