On Sun, Feb 14, 2021 at 11:50:12PM +, Al Viro wrote:
> check that len is reasonable
> p = kmalloc(offsetof(struct foo, string[len]), GFP_KERNEL);
> copy_from_user(p, user_object, len);
offsetof(struct foo, string[len]), that is
On Sun, Feb 14, 2021 at 03:14:56PM -0800, Ben Widawsky wrote:
> On 21-02-14 16:30:09, Al Viro wrote:
> > On Tue, Feb 09, 2021 at 04:02:55PM -0800, Ben Widawsky wrote:
> >
> > > +static int handle_mailbox_cmd_from_user(struct cxl_memdev *cxlmd,
> > > + const struct c
On 21-02-14 16:30:09, Al Viro wrote:
> On Tue, Feb 09, 2021 at 04:02:55PM -0800, Ben Widawsky wrote:
>
> > +static int handle_mailbox_cmd_from_user(struct cxl_memdev *cxlmd,
> > + const struct cxl_mem_command *cmd,
> > + u64 in_pa
On Tue, Feb 09, 2021 at 04:02:55PM -0800, Ben Widawsky wrote:
> +static int handle_mailbox_cmd_from_user(struct cxl_memdev *cxlmd,
> + const struct cxl_mem_command *cmd,
> + u64 in_payload, u64 out_payload,
> +
On 21-02-11 10:06:46, Jonathan Cameron wrote:
> On Wed, 10 Feb 2021 20:40:52 -0800
> Dan Williams wrote:
>
> > On Wed, Feb 10, 2021 at 10:47 AM Jonathan Cameron
> > wrote:
> > [..]
> > > > +#define CXL_CMDS
> > > >\
> > > > + ___C(IN
On Wed, 10 Feb 2021 20:40:52 -0800
Dan Williams wrote:
> On Wed, Feb 10, 2021 at 10:47 AM Jonathan Cameron
> wrote:
> [..]
> > > +#define CXL_CMDS
> > > \
> > > + ___C(INVALID, "Invalid Command"), \
> >
On Wed, Feb 10, 2021 at 10:47 AM Jonathan Cameron
wrote:
[..]
> > +#define CXL_CMDS \
> > + ___C(INVALID, "Invalid Command"), \
> > + ___C(IDENTIFY, "Identify Command"), \
On 21-02-10 18:45:40, Jonathan Cameron wrote:
> On Tue, 9 Feb 2021 16:02:55 -0800
> Ben Widawsky wrote:
>
> > Add a straightforward IOCTL that provides a mechanism for userspace to
> > query the supported memory device commands. CXL commands as they appear
> > to userspace are described as part o
On Tue, 9 Feb 2021 16:02:55 -0800
Ben Widawsky wrote:
> Add a straightforward IOCTL that provides a mechanism for userspace to
> query the supported memory device commands. CXL commands as they appear
> to userspace are described as part of the UAPI kerneldoc. The command
> list returned via this
Add a straightforward IOCTL that provides a mechanism for userspace to
query the supported memory device commands. CXL commands as they appear
to userspace are described as part of the UAPI kerneldoc. The command
list returned via this IOCTL will contain the full set of commands that
the driver sup
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