Re: [PATCH v6.13] nfsd: don't ignore the return code of svc_proc_register()

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

✅ All tests passed successfully. No issues detected.
No action required from the submitter.

The upstream commit SHA1 provided is correct: 930b64ca0c511521f0abdd1d57ce52b2a6e3476b

WARNING: Author mismatch between patch and upstream commit:
Backport author: cel@kernel.org
Commit author: Jeff Layton<jlayton@kernel.org>

Status in newer kernel trees:
6.14.y | Present (different SHA1: 9d9456185fd5)

Note: The patch differs from the upstream commit:
---
1:  930b64ca0c511 ! 1:  23c220e9285a7 nfsd: don't ignore the return code of svc_proc_register()
    @@ Metadata
      ## Commit message ##
         nfsd: don't ignore the return code of svc_proc_register()
     
    +    [ Upstream commit 930b64ca0c511521f0abdd1d57ce52b2a6e3476b ]
    +
         Currently, nfsd_proc_stat_init() ignores the return value of
         svc_proc_register(). If the procfile creation fails, then the kernel
         will WARN when it tries to remove the entry later.
    @@ fs/nfsd/nfsctl.c: static __net_init int nfsd_net_init(struct net *net)
      	seqlock_init(&nn->writeverf_lock);
     -	nfsd_proc_stat_init(net);
      #if IS_ENABLED(CONFIG_NFS_LOCALIO)
    - 	spin_lock_init(&nn->local_clients_lock);
      	INIT_LIST_HEAD(&nn->local_clients);
      #endif
      	return 0;
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.13.y       |  Success    |  Success   |