1 files changed, 45 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4513-drm-amd-display-Fix-static-analysis-bug-in-validate_.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4513-drm-amd-display-Fix-static-analysis-bug-in-validate_.patch
new file mode 100644
index 00000000..73c36f1f
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4513-drm-amd-display-Fix-static-analysis-bug-in-validate_.patch
@@ -0,0 +1,45 @@
+From e90602e57aacf7202229cb99d213ff0ce8954699 Mon Sep 17 00:00:00 2001
+From: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
+Date: Wed, 6 Nov 2019 14:58:45 -0500
+Subject: [PATCH 4513/4736] drm/amd/display: Fix static analysis bug in
+ validate_bksv
+
+[Why]
+static analysis throws the error below
+
+Out-of-bounds read (OVERRUN)
+Overrunning array of 5 bytes at byte offset 7 by dereferencing pointer
+(uint64_t *)hdcp->auth.msg.hdcp1.bksv.
+
+var n is going to contain  r0p and bcaps. if they are non-zero the count
+will be wrong
+
+How]
+Use memcpy instead to avoid this.
+
+Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
+Reviewed-by: Harry Wentland <harry.wentland@amd.com>
+---
+ drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c
+index 4d11041a8c6f..04845e43df15 100644
+--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c
++++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c
+@@ -27,9 +27,11 @@
+ 
+ static inline enum mod_hdcp_status validate_bksv(struct mod_hdcp *hdcp)
+ {
+-	uint64_t n = *(uint64_t *)hdcp->auth.msg.hdcp1.bksv;
++	uint64_t n = 0;
+ 	uint8_t count = 0;
+ 
++	memcpy(&n, hdcp->auth.msg.hdcp1.bksv, sizeof(uint64_t));
++
+ 	while (n) {
+ 		count++;
+ 		n &= (n - 1);
+-- 
+2.17.1
+