On Thu, May 14, 2020 at 10:13:18AM +0900, Masami Hiramatsu wrote:
> > + bool strict)
> > {
> > long ret;
> > mm_segment_t old_fs = get_fs();
> >
> > + if (!probe_kernel_read_allowed(dst, src, size, strict))
> > + return -EFAULT;
>
> Could you make this return -ERAN
Hi Christoph,
On Wed, 13 May 2020 18:00:30 +0200
Christoph Hellwig wrote:
> @@ -36,14 +50,20 @@ long __weak probe_kernel_read(void *dst, const void *src,
> size_t size)
> * probe_kernel_read() suitable for use within regions where the caller
> * already holds mmap_sem, or other locks which
Currently architectures have to override every routine that probes
kernel memory, which includes a pure read and strcpy, both in strict
and not strict variants. Just provide a single arch hooks instead to
make sure all architectures cover all the cases.
Signed-off-by: Christoph Hellwig
---
arch
