On Wed, Sep 22, 2021 at 08:17:15PM +0800, Cheng Chao wrote:
> I notice that v4.9.283 has released, but this patch is not merged.
> It's exactly a bug.
Can you please resend this and include all of the information in this
thread in the changelog comment explaining why this is only needed for
this o
I notice that v4.9.283 has released, but this patch is not merged.
It's exactly a bug.
On Sat, Sep 11, 2021 at 10:40 PM Cheng Chao wrote:
>
> the bug has been introduced by the patch:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/staging/android/ion/ion_s
the bug has been introduced by the patch:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/staging/android/ion/ion_system_heap.c?h=v4.9.282&id=e7f63771b60e7802c5a9b437c5ab1a8e33a0bb35
On Sat, Sep 11, 2021 at 10:20 PM Cheng Chao wrote:
>
> for longterm v4.4.283,
for longterm v4.4.283, the code has checked if (!page)
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/staging/android/ion/ion_system_heap.c?h=v4.4.283
static struct page *alloc_buffer_page(struct ion_system_heap *heap,
struct ion_buffer *buffer,
unsign
On Sat, Sep 11, 2021 at 07:21:15PM +0800, Cheng Chao wrote:
> kernel panic is here:
>
> Unable to handle kernel paging request at virtual address b038
> pgd = d9d94000
> [b038] *pgd=
> Internal error: Oops: 2805 [#1] PREEMPT SMP ARM
> ...
> task: daa2dd00 task.stack: da194000
> PC
kernel panic is here:
Unable to handle kernel paging request at virtual address b038
pgd = d9d94000
[b038] *pgd=
Internal error: Oops: 2805 [#1] PREEMPT SMP ARM
...
task: daa2dd00 task.stack: da194000
PC is at v7_dma_clean_range+0x1c/0x34
LR is at arm_dma_sync_single_for_device+0x4
