From: Charles Giessen <charles@lunarg.com>
Date: Mon, 31 Oct 2022 22:37:14 +0000 (-0600)
Subject: Null check vk_icdGetPhysicalDeviceProcAddr
X-Git-Tag: upstream/1.3.240~69
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d4fd5773d5a004a841e2e976ef1a23aed53e8330;p=platform%2Fupstream%2FVulkan-Loader.git

Null check vk_icdGetPhysicalDeviceProcAddr

Forgotten NULL check causes crashes if a driver forgets to export
vk_icdGetPhysicalDeviceProcAddr but does report a 4 or higher
ICD Interface Version.
---

diff --git a/loader/unknown_function_handling.c b/loader/unknown_function_handling.c
index 6eb6918b..2fbb2e79 100644
--- a/loader/unknown_function_handling.c
+++ b/loader/unknown_function_handling.c
@@ -188,6 +188,7 @@ bool loader_check_icds_for_phys_dev_ext_address(struct loader_instance *inst, co
     icd_term = inst->icd_terms;
     while (NULL != icd_term) {
         if (icd_term->scanned_icd->interface_version >= MIN_PHYS_DEV_EXTENSION_ICD_INTERFACE_VERSION &&
+            icd_term->scanned_icd->GetPhysicalDeviceProcAddr &&
             icd_term->scanned_icd->GetPhysicalDeviceProcAddr(icd_term->instance, funcName))
             // this icd supports funcName
             return true;