On Sun, Oct 29, 2017 at 06:13:28PM +0530, Viresh Kumar wrote:
On 29-10-17, 13:01, Johan Hovold wrote:
Remove erroneous spi_master_put() after controller deregistration which would access the already freed spi controller.
Note that spi_unregister_master() drops our only controller reference.
Fixes: ba3e67001b42 ("greybus: SPI: convert to a gpbridge driver") Cc: stable stable@vger.kernel.org # 4.9 Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Johan Hovold johan@kernel.org
Acked-by: Viresh Kumar viresh.kumar@linaro.org
While looking at this I think I found another problem (I will send it as a separate patch later on) and this fixes it:
That's right, and I already posted a fix for that use-after-free:
https://lkml.kernel.org/r/20171029115625.32385-1-johan@kernel.org
Thanks, Johan