rg/r/20250912131236.303102-3-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/misc/fastrpc.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -367,11 +367,16 @@ static int fastrpc_map_lookup(struct fas
 {
 	struct fastrpc_session_ctx *sess = fl->sctx;
 	struct fastrpc_map *map = NULL;
+	struct dma_buf *buf;
 	int ret = -ENOENT;
 
+	buf = dma_buf_get(fd);
+	if (IS_ERR(buf))
+		return PTR_ERR(buf);
+
 	spin_lock(&fl->lock);
 	list_for_each_entry(map, &fl->maps, node) {
-		if (map->fd != fd)
+		if (map->fd != fd || map->buf != buf)
 			continue;
 
 		if (take_ref) {[PATCH 6.17 544/563] misc: fastrpc: Fix fastrpc_map_lookup operationGreg Kroah-Hartman <gregkh@linuxfoundation.org> undefinedstable@vger.kernel.org undefined undefined undefined undefined undefined undefined undefined’ƒ–