[PATCH 5.4 143/168] firmware: imx: Align imx_sc_msg_req_cpu_start to 4

Greg Kroah-Hartman
2020-03-10T12:54:26Z

From: Leonard Crestez <leonard.crestez@nxp.com>

commit f5bfeff44612d304deb100065a9f712309dc2783 upstream.

The imx SC api strongly assumes that messages are composed out of
4-bytes words but some of our message structs have odd sizeofs.

This produces many oopses with CONFIG_KASAN=y.

Fix by marking with __aligned(4).

Fixes: d90bf296ae18 ("firmware: imx: Add support to start/stop a CPU")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/firmware/imx/misc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/firmware/imx/misc.c
+++ b/drivers/firmware/imx/misc.c
@@ -24,7 +24,7 @@ struct imx_sc_msg_req_cpu_start {
u32 address_lo;
u16 resource;
u8 enable;
-} __packed;
+} __packed __aligned(4);

struct imx_sc_msg_req_misc_get_ctrl {
struct imx_sc_rpc_msg hdr;