This is a note to let you know that I've just added the patch titled NFSv4.x: Fail client initialisation if state manager thread can't run to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: nfsv4.x-fail-client-initialisation-if-state-manager-.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit b5cf19e74c5211a3869a21e33e396fc53e10f785 Author: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> Date: Tue Dec 6 12:42:59 2022 -0500 NFSv4.x: Fail client initialisation if state manager thread can't run [ Upstream commit b4e4f66901658fae0614dea5bf91062a5387eda7 ] If the state manager thread fails to start, then we should just mark the client initialisation as failed so that other processes or threads don't get stuck in nfs_wait_client_init_complete(). Reported-by: ChenXiaoSong <chenxiaosong2@xxxxxxxxxx> Fixes: 4697bd5e9419 ("NFSv4: Fix a race in the net namespace mount notification") Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index ecac56be6cb7..0cd803b4d90c 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1227,6 +1227,8 @@ void nfs4_schedule_state_manager(struct nfs_client *clp) if (IS_ERR(task)) { printk(KERN_ERR "%s: kthread_run: %ld\n", __func__, PTR_ERR(task)); + if (!nfs_client_init_is_complete(clp)) + nfs_mark_client_ready(clp, PTR_ERR(task)); nfs4_clear_state_manager_bit(clp); nfs_put_client(clp); module_put(THIS_MODULE);