From a7cd3a2d577f18bc44afae9797785763a1f0aeff Mon Sep 17 00:00:00 2001
From: Marcin Spiewak <marcin.spiewak@intel.com>
Date: Mon, 27 Mar 2023 13:49:10 +0000
Subject: [PATCH] lib/bdev: fixed potential dereferencing of NULL pointer

Fixed issue indicated by Klocwork scan. 'desc->bdev'
is assigned to 'bdev' ptr, before verification that
'desc' is not NULL

Change-Id: I36e63c27b4d3220e85524133a0ec0e3521770875
Signed-off-by: Marcin Spiewak <marcin.spiewak@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17350
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
---
 lib/bdev/bdev.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/bdev/bdev.c b/lib/bdev/bdev.c
index 6f0ecc89a..61f813656 100644
--- a/lib/bdev/bdev.c
+++ b/lib/bdev/bdev.c
@@ -8122,7 +8122,7 @@ spdk_bdev_module_claim_bdev_desc(struct spdk_bdev_desc *desc, enum spdk_bdev_cla
 				 struct spdk_bdev_claim_opts *_opts,
 				 struct spdk_bdev_module *module)
 {
-	struct spdk_bdev *bdev = desc->bdev;
+	struct spdk_bdev *bdev;
 	struct spdk_bdev_claim_opts opts;
 	int rc = 0;
 
@@ -8131,6 +8131,8 @@ spdk_bdev_module_claim_bdev_desc(struct spdk_bdev_desc *desc, enum spdk_bdev_cla
 		return -EINVAL;
 	}
 
+	bdev = desc->bdev;
+
 	if (_opts == NULL) {
 		spdk_bdev_claim_opts_init(&opts, sizeof(opts));
 	} else if (claim_opts_copy(_opts, &opts) != 0) {