Hi,
On 2/11/21 1:41 PM, Maximilian Luz wrote:
> The raw message frame length is unaligned and explicitly marked as
> little endian. It should not be accessed without the appropriate
> accessor functions. Fix this.
>
> Note that payload.len already contains the correct length after parsing
> via sshp_parse_frame(), so we can simply use that instead.
>
> Reported-by: kernel-test-robot <lkp@xxxxxxxxx>
> Fixes: c167b9c7e3d6 ("platform/surface: Add Surface Aggregator subsystem")
> Signed-off-by: Maximilian Luz <luzmaximilian@xxxxxxxxx>
Thank you for your patch, I've applied this patch to my review-hans
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans
Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.
Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.
Regards,
Hans
> ---
>
> Changes in v2:
> - Use payload.len instead of getting the frame length directly. Note
> that payload.len equals the frame length and is already correctly set
> in sshp_parse_frame(), so they are exactly the same thing. Makes it
> look a bit nicer though.
>
> I did drop the ACKs/Reveiewd-by in case you want to check that
> yourselves and since that's essentially the whole change.
>
> ---
> drivers/platform/surface/aggregator/ssh_packet_layer.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/platform/surface/aggregator/ssh_packet_layer.c b/drivers/platform/surface/aggregator/ssh_packet_layer.c
> index 583315db8b02..15d96eac6811 100644
> --- a/drivers/platform/surface/aggregator/ssh_packet_layer.c
> +++ b/drivers/platform/surface/aggregator/ssh_packet_layer.c
> @@ -1774,7 +1774,7 @@ static size_t ssh_ptl_rx_eval(struct ssh_ptl *ptl, struct ssam_span *source)
> break;
> }
>
> - return aligned.ptr - source->ptr + SSH_MESSAGE_LENGTH(frame->len);
> + return aligned.ptr - source->ptr + SSH_MESSAGE_LENGTH(payload.len);
> }
>
> static int ssh_ptl_rx_threadfn(void *data)
>
