On Sat, Mar 20, 2021 at 9:25 AM Mike Rapoport wrote:
>
> On Thu, Mar 18, 2021 at 04:22:37PM +0100, Rafael J. Wysocki wrote:
> > On Thu, Mar 18, 2021 at 11:50 AM Rafael J. Wysocki
> > wrote:
> > >
> > > On Thu, Mar 18, 2021 at 8:25 AM Mike Rapoport wrote:
> > > >
> > > > On Wed, Mar 17, 2021 at
On Thu, Mar 18, 2021 at 04:22:37PM +0100, Rafael J. Wysocki wrote:
> On Thu, Mar 18, 2021 at 11:50 AM Rafael J. Wysocki wrote:
> >
> > On Thu, Mar 18, 2021 at 8:25 AM Mike Rapoport wrote:
> > >
> > > On Wed, Mar 17, 2021 at 09:14:37PM +0100, Rafael J. Wysocki wrote:
> > > > On Monday, March 15, 2
On Wed, Mar 17, 2021 at 11:28 PM George Kennedy
wrote:
>
>
>
> On 3/17/2021 4:14 PM, Rafael J. Wysocki wrote:
> > On Monday, March 15, 2021 5:19:29 PM CET Rafael J. Wysocki wrote:
> >> On Sun, Mar 14, 2021 at 8:00 PM Mike Rapoport wrote:
> >>> On Thu, Mar 11, 2021 at 04:36:31PM +0100, Rafael J. W
On Thu, Mar 18, 2021 at 11:50 AM Rafael J. Wysocki wrote:
>
> On Thu, Mar 18, 2021 at 8:25 AM Mike Rapoport wrote:
> >
> > On Wed, Mar 17, 2021 at 09:14:37PM +0100, Rafael J. Wysocki wrote:
> > > On Monday, March 15, 2021 5:19:29 PM CET Rafael J. Wysocki wrote:
> > > > On Sun, Mar 14, 2021 at 8:0
On Thu, Mar 18, 2021 at 8:25 AM Mike Rapoport wrote:
>
> On Wed, Mar 17, 2021 at 09:14:37PM +0100, Rafael J. Wysocki wrote:
> > On Monday, March 15, 2021 5:19:29 PM CET Rafael J. Wysocki wrote:
> > > On Sun, Mar 14, 2021 at 8:00 PM Mike Rapoport wrote:
> > > >
> > > > On Thu, Mar 11, 2021 at 04:3
On Wed, Mar 17, 2021 at 09:14:37PM +0100, Rafael J. Wysocki wrote:
> On Monday, March 15, 2021 5:19:29 PM CET Rafael J. Wysocki wrote:
> > On Sun, Mar 14, 2021 at 8:00 PM Mike Rapoport wrote:
> > >
> > > On Thu, Mar 11, 2021 at 04:36:31PM +0100, Rafael J. Wysocki wrote:
> > > > On Wed, Mar 10, 202
On 3/17/2021 4:14 PM, Rafael J. Wysocki wrote:
On Monday, March 15, 2021 5:19:29 PM CET Rafael J. Wysocki wrote:
On Sun, Mar 14, 2021 at 8:00 PM Mike Rapoport wrote:
On Thu, Mar 11, 2021 at 04:36:31PM +0100, Rafael J. Wysocki wrote:
On Wed, Mar 10, 2021 at 8:47 PM David Hildenbrand wrote:
On Monday, March 15, 2021 5:19:29 PM CET Rafael J. Wysocki wrote:
> On Sun, Mar 14, 2021 at 8:00 PM Mike Rapoport wrote:
> >
> > On Thu, Mar 11, 2021 at 04:36:31PM +0100, Rafael J. Wysocki wrote:
> > > On Wed, Mar 10, 2021 at 8:47 PM David Hildenbrand
> > > wrote:
> > > > >
> > > > > There is so
On Mon, Mar 15, 2021 at 5:19 PM Rafael J. Wysocki wrote:
>
> On Sun, Mar 14, 2021 at 8:00 PM Mike Rapoport wrote:
> >
> > On Thu, Mar 11, 2021 at 04:36:31PM +0100, Rafael J. Wysocki wrote:
> > > On Wed, Mar 10, 2021 at 8:47 PM David Hildenbrand
> > > wrote:
> > > > >
> > > > > There is some car
On Sun, Mar 14, 2021 at 8:00 PM Mike Rapoport wrote:
>
> On Thu, Mar 11, 2021 at 04:36:31PM +0100, Rafael J. Wysocki wrote:
> > On Wed, Mar 10, 2021 at 8:47 PM David Hildenbrand wrote:
> > > >
> > > > There is some care that should be taken to make sure we get the order
> > > > right, but I don't
On Thu, Mar 11, 2021 at 04:36:31PM +0100, Rafael J. Wysocki wrote:
> On Wed, Mar 10, 2021 at 8:47 PM David Hildenbrand wrote:
> > >
> > > There is some care that should be taken to make sure we get the order
> > > right, but I don't see a fundamental issue here.
>
> Me neither.
>
> > > If I unde
On Wed, Mar 10, 2021 at 8:47 PM David Hildenbrand wrote:
>
> > The same could be reproduced via zone shuffling with a little luck.
>
> But nobody does that in practice.
>
> >>
> >> Dan will most certainly object. And I don't know what makes you speak in
> >> absolute words here.
The same could be reproduced via zone shuffling with a little luck.
But nobody does that in practice.
Dan will most certainly object. And I don't know what makes you speak in
absolute words here.
This would be relatively straightforward to address if ACPICA was not
involved in it, but unfor
On Wed, Mar 10, 2021 at 08:10:42PM +0100, David Hildenbrand wrote:
>
> > > > Memory gets allocated and used in a different order, which seems to have
> > > > exposed (yet another) latent BUG.
> > >
> > > Well, you can call it that, or you can say that things worked under
> > > certain assumptions
Memory gets allocated and used in a different order, which seems to have
exposed (yet another) latent BUG.
Well, you can call it that, or you can say that things worked under
certain assumptions regarding the memory allocation order which are
not met any more.
The same could be reproduced v
On Wed, Mar 10, 2021 at 7:39 PM Rafael J. Wysocki wrote:
>
> On Fri, Mar 5, 2021 at 2:40 PM David Hildenbrand wrote:
> >
> > >> The ibft table, for example, is mapped in via acpi_map() and kmap(). The
> > >> page for the ibft table is not reserved, so it can end up on the
> > >> freelist.
> > >
On Fri, Mar 5, 2021 at 2:40 PM David Hildenbrand wrote:
>
> >> The ibft table, for example, is mapped in via acpi_map() and kmap(). The
> >> page for the ibft table is not reserved, so it can end up on the freelist.
> >
> > You appear to be saying that it is not sufficient to kmap() a page in
> >
On Tue, Mar 09, 2021 at 07:29:51PM +0100, Rafael J. Wysocki wrote:
> On Tue, Mar 9, 2021 at 6:54 PM Mike Rapoport wrote:
> >
> > On Sun, Mar 07, 2021 at 09:46:22AM +0200, Mike Rapoport wrote:
> > > Hello Rafael,
> > >
> > > On Fri, Mar 05, 2021 at 02:30:07PM +0100, Rafael J. Wysocki wrote:
> > > >
On Tue, Mar 9, 2021 at 6:54 PM Mike Rapoport wrote:
>
> On Sun, Mar 07, 2021 at 09:46:22AM +0200, Mike Rapoport wrote:
> > Hello Rafael,
> >
> > On Fri, Mar 05, 2021 at 02:30:07PM +0100, Rafael J. Wysocki wrote:
> > > On Fri, Mar 5, 2021 at 12:14 AM George Kennedy
> > > wrote:
> > >
> > > > The
On Sun, Mar 07, 2021 at 09:46:22AM +0200, Mike Rapoport wrote:
> Hello Rafael,
>
> On Fri, Mar 05, 2021 at 02:30:07PM +0100, Rafael J. Wysocki wrote:
> > On Fri, Mar 5, 2021 at 12:14 AM George Kennedy
> > wrote:
> >
> > > The ibft table, for example, is mapped in via acpi_map() and kmap(). The
>
Hello Rafael,
On Fri, Mar 05, 2021 at 02:30:07PM +0100, Rafael J. Wysocki wrote:
> On Fri, Mar 5, 2021 at 12:14 AM George Kennedy
> wrote:
>
> > The ibft table, for example, is mapped in via acpi_map() and kmap(). The
> > page for the ibft table is not reserved, so it can end up on the freelist.
On 3/5/2021 8:40 AM, David Hildenbrand wrote:
The ibft table, for example, is mapped in via acpi_map() and kmap().
The
page for the ibft table is not reserved, so it can end up on the
freelist.
You appear to be saying that it is not sufficient to kmap() a page in
order to use it safely. It
The ibft table, for example, is mapped in via acpi_map() and kmap(). The
page for the ibft table is not reserved, so it can end up on the freelist.
You appear to be saying that it is not sufficient to kmap() a page in
order to use it safely. It is also necessary to reserve it upfront,
for examp
On Fri, Mar 5, 2021 at 12:14 AM George Kennedy
wrote:
>
> Hello Rafael,
>
> On 3/4/2021 7:14 AM, Rafael J. Wysocki wrote:
> > On Thu, Mar 4, 2021 at 2:22 AM George Kennedy
> > wrote:
> >> Since commit 7fef431be9c9 ("mm/page_alloc: place pages to tail
> >> in __free_pages_core()") the following u
Hello Rafael,
On 3/4/2021 7:14 AM, Rafael J. Wysocki wrote:
On Thu, Mar 4, 2021 at 2:22 AM George Kennedy wrote:
Since commit 7fef431be9c9 ("mm/page_alloc: place pages to tail
in __free_pages_core()") the following use after free occurs
intermittently when acpi tables are accessed.
BUG: KASAN
On Thu, Mar 4, 2021 at 2:22 AM George Kennedy wrote:
>
> Since commit 7fef431be9c9 ("mm/page_alloc: place pages to tail
> in __free_pages_core()") the following use after free occurs
> intermittently when acpi tables are accessed.
>
> BUG: KASAN: use-after-free in ibft_init+0x134/0xc49
> Read of s
Since commit 7fef431be9c9 ("mm/page_alloc: place pages to tail
in __free_pages_core()") the following use after free occurs
intermittently when acpi tables are accessed.
BUG: KASAN: use-after-free in ibft_init+0x134/0xc49
Read of size 4 at addr 8880be453004 by task swapper/0/1
CPU: 3 PID: 1 Co
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