From 004a6fcd1a7d40564310c8348813d12ac0ea9de9 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Wed, 27 Jul 2022 21:18:26 +0200
Subject: kernel/vfs: fix assert failure when creating a vfsreq to a dead mount

---
 src/kernel/vfs/request.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/kernel/vfs/request.c')

diff --git a/src/kernel/vfs/request.c b/src/kernel/vfs/request.c
index 377cb2c..83a104f 100644
--- a/src/kernel/vfs/request.c
+++ b/src/kernel/vfs/request.c
@@ -20,8 +20,10 @@ void vfsreq_create(struct vfs_request req_) {
 		req->caller->waits4fs.req = req;
 	}
 
-	if (!req->backend || !req->backend->potential_handlers)
+	if (!req->backend || !req->backend->potential_handlers) {
 		vfsreq_finish_short(req, -1);
+		return;
+	}
 
 	struct vfs_request **iter = &req->backend->queue;
 	while (*iter != NULL) // find free spot in queue
@@ -74,7 +76,9 @@ void vfsreq_finish(struct vfs_request *req, char __user *stored, long ret,
 		process_transition(req->caller, PS_RUNNING);
 	}
 
-	vfs_backend_refdown(req->backend);
+	if (req->backend)
+		vfs_backend_refdown(req->backend);
+
 	kfree(req);
 	return;
 }
-- 
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