[Devel] [PATCH RHEL9 COMMIT] fs/fuse kio: fixed a bug in pcs_rpc_cancel_msg

[Konstantin Khorenko]

The commit is pushed to "branch-rh9-5.14.0-427.33.1.vz9.72.x-ovz" and will appear at git at bitbucket.org:openvz/vzkernel.git
after rh9-5.14.0-427.33.1.vz9.72.3
------>
commit 1a7852cce89230701ff1dca7374a735bde639cac
Author: Liu Kui <kui.liu at virtuozzo.com>
Date:   Tue Sep 24 18:09:17 2024 +0800

    fs/fuse kio: fixed a bug in pcs_rpc_cancel_msg
    
    Set the error when a msg is cancelled, otherwise it could crash kernel
    when the cancelled msg has not been sent.
    
    Fixes: 4f8e574fab72 ("fs/fuse kio: fixed krpc abort, implement proper request
    msg cancellation")
    
    Signed-off-by: Liu Kui <kui.liu at virtuozzo.com>
    Acked-by: Alexey Kuznetsov <kuznet at virtuozzo.com>
    
    Feature: fuse: kRPC - single RPC for kernel and userspace
---
 fs/fuse/kio/pcs/pcs_rpc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/fuse/kio/pcs/pcs_rpc.c b/fs/fuse/kio/pcs/pcs_rpc.c
index 80bbffcb88a8..a4f3ae1fdf5b 100644
--- a/fs/fuse/kio/pcs/pcs_rpc.c
+++ b/fs/fuse/kio/pcs/pcs_rpc.c
@@ -592,6 +592,7 @@ int pcs_rpc_cancel_msg(struct pcs_msg *msg)
 	list_del(&msg->list);
 	spin_unlock(&ep->q_lock);
 
+	pcs_set_local_error(&msg->error, PCS_ERR_CANCEL_REQUEST);
 	pcs_msg_del_calendar(msg);
 	msg->stage = PCS_MSG_STAGE_NONE;
 	msg->done(msg);