On 23/01/2025 17:40, Peter Xu wrote:
> On Thu, Jan 23, 2025 at 02:38:46PM +, Ryan Roberts wrote:
>>> @@ -5470,7 +5471,18 @@ static void move_huge_pte(struct vm_area_struct
>>> *vma, unsigned long old_addr,
>>> spin_lock_nested(src_ptl, SINGLE_DEPTH_NESTING);
>>>
>>> pte = hug
On Thu, Jan 23, 2025 at 02:38:46PM +, Ryan Roberts wrote:
> > @@ -5470,7 +5471,18 @@ static void move_huge_pte(struct vm_area_struct
> > *vma, unsigned long old_addr,
> > spin_lock_nested(src_ptl, SINGLE_DEPTH_NESTING);
> >
> > pte = huge_ptep_get_and_clear(mm, old_addr, src_
On 23/01/2025 14:38, Ryan Roberts wrote:
> I think there might be a bug in this after all...
>
>
> On 07/01/2025 14:47, Ryan Roberts wrote:
>> When mremap()ing a memory region previously registered with userfaultfd
>> as write-protected but without UFFD_FEATURE_EVENT_REMAP, an
>> inconsistency in
I think there might be a bug in this after all...
On 07/01/2025 14:47, Ryan Roberts wrote:
> When mremap()ing a memory region previously registered with userfaultfd
> as write-protected but without UFFD_FEATURE_EVENT_REMAP, an
> inconsistency in flag clearing leads to a mismatch between the vma f
On 16.01.25 10:04, Ryan Roberts wrote:
On 15/01/2025 20:28, Peter Xu wrote:
On Tue, Jan 07, 2025 at 02:47:52PM +, Ryan Roberts wrote:
When mremap()ing a memory region previously registered with userfaultfd
as write-protected but without UFFD_FEATURE_EVENT_REMAP, an
inconsistency in flag cle
On 15/01/2025 20:28, Peter Xu wrote:
> On Tue, Jan 07, 2025 at 02:47:52PM +, Ryan Roberts wrote:
>> When mremap()ing a memory region previously registered with userfaultfd
>> as write-protected but without UFFD_FEATURE_EVENT_REMAP, an
>> inconsistency in flag clearing leads to a mismatch betwee
On Wed, 15 Jan 2025 17:30:20 + Lorenzo Stoakes
wrote:
> I sort of favour putting hotfixes in quick, but this one has gone in
> quicker than some reviewed hotfixes which we left in unstable... however
> towards the end of a cycle I think Andrew is stuck between a rock and a
> hard place in de
On Tue, Jan 07, 2025 at 02:47:52PM +, Ryan Roberts wrote:
> When mremap()ing a memory region previously registered with userfaultfd
> as write-protected but without UFFD_FEATURE_EVENT_REMAP, an
> inconsistency in flag clearing leads to a mismatch between the vma flags
> (which have uffd-wp clea
On 15/01/2025 17:30, Lorenzo Stoakes wrote:
> On Wed, Jan 15, 2025 at 12:21:15PM -0500, Peter Xu wrote:
>> On Wed, Jan 15, 2025 at 04:58:06PM +, Ryan Roberts wrote:
>>> Hi Peter, David,
>>
>> Hey, Ryan,
>>
>>>
>>> On 07/01/2025 14:47, Ryan Roberts wrote:
When mremap()ing a memory region pr
On Wed, Jan 15, 2025 at 12:21:15PM -0500, Peter Xu wrote:
> On Wed, Jan 15, 2025 at 04:58:06PM +, Ryan Roberts wrote:
> > Hi Peter, David,
>
> Hey, Ryan,
>
> >
> > On 07/01/2025 14:47, Ryan Roberts wrote:
> > > When mremap()ing a memory region previously registered with userfaultfd
> > > as wri
On Wed, Jan 15, 2025 at 04:58:06PM +, Ryan Roberts wrote:
> Hi Peter, David,
Hey, Ryan,
>
> On 07/01/2025 14:47, Ryan Roberts wrote:
> > When mremap()ing a memory region previously registered with userfaultfd
> > as write-protected but without UFFD_FEATURE_EVENT_REMAP, an
> > inconsistency i
Hi Peter, David,
On 07/01/2025 14:47, Ryan Roberts wrote:
> When mremap()ing a memory region previously registered with userfaultfd
> as write-protected but without UFFD_FEATURE_EVENT_REMAP, an
> inconsistency in flag clearing leads to a mismatch between the vma flags
> (which have uffd-wp cleared
When mremap()ing a memory region previously registered with userfaultfd
as write-protected but without UFFD_FEATURE_EVENT_REMAP, an
inconsistency in flag clearing leads to a mismatch between the vma flags
(which have uffd-wp cleared) and the pte/pmd flags (which do not have
uffd-wp cleared). This m
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