From a1b31293e8e6a8e6ec1483ffd2f1a54ad1c3abf5 Mon Sep 17 00:00:00 2001
From: yidong0635 <dongx.yi@intel.com>
Date: Mon, 28 Sep 2020 12:57:40 -0400
Subject: [PATCH] ocf: add check ctx.

Check ocf_cache_get_priv return value if returns NULL, just exit.
To avoid error.

Signed-off-by: yidong0635 <dongx.yi@intel.com>
Change-Id: Id94c4faa537f19ce9b657fbfe82ba76e2a414125
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4436
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
---
 module/bdev/ocf/volume.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/module/bdev/ocf/volume.c b/module/bdev/ocf/volume.c
index de683b8528..666eac86e3 100644
--- a/module/bdev/ocf/volume.c
+++ b/module/bdev/ocf/volume.c
@@ -231,6 +231,9 @@ prepare_submit(struct ocf_io *io)
 
 	cache = ocf_queue_get_cache(q);
 	cctx = ocf_cache_get_priv(cache);
+	if (cctx == NULL) {
+		return -EFAULT;
+	}
 
 	if (q == cctx->cleaner_queue || q == cctx->mngt_queue) {
 		io_ctx->ch = base->management_channel;