This is a note to let you know that I've just added the patch titled
drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)
to the 6.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch
This is a note to let you know that I've just added the patch titled
drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch
Hi,
On 21.05.2024 14:58, Daniel Vetter wrote:
> On Tue, 21 May 2024 at 14:38, Daniel Vetter wrote:
>>
>> On Mon, May 20, 2024 at 12:05:14PM +0200, Jacek Lawrynowicz wrote:
>>> From: "Wachowski, Karol"
>>>
>>> Lack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap
>>> allows users to
On Tue, 21 May 2024 at 14:38, Daniel Vetter wrote:
>
> On Mon, May 20, 2024 at 12:05:14PM +0200, Jacek Lawrynowicz wrote:
> > From: "Wachowski, Karol"
> >
> > Lack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap
> > allows users to call mmap with PROT_WRITE and MAP_PRIVATE flag
> >
On Mon, May 20, 2024 at 12:05:14PM +0200, Jacek Lawrynowicz wrote:
> From: "Wachowski, Karol"
>
> Lack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap
> allows users to call mmap with PROT_WRITE and MAP_PRIVATE flag
> causing a kernel panic due to BUG_ON in vmf_insert_pfn_prot:
> B
From: "Wachowski, Karol"
Lack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap
allows users to call mmap with PROT_WRITE and MAP_PRIVATE flag
causing a kernel panic due to BUG_ON in vmf_insert_pfn_prot:
BUG_ON((vma->vm_flags & VM_PFNMAP) && is_cow_mapping(vma->vm_flags));
Return -E
