nfsd: return NFS4ERR_NOTSUPP for unsupported netloc4 types

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nfsd4_decode_nl4_server() handled only NL4_NETADDR and returned
nfserr_bad_xdr for NL4_NAME and NL4_URL. Those forms are well-formed XDR,
so BADXDR is misleading -- the request is unsupported, not malformed.

Decode and discard the utf8str_cis for NL4_NAME and NL4_URL to keep the
stream consistent, and return nfserr_notsupp. nfsd4_proc_compound() honors
a decode-time op->status, so the op fails without executing.

Fixes: 84e1b21d5e ("NFSD add ca_source_server<> to COPY")
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260710-nfsd-testing-v3-7-a0ff7db6aa3e@kernel.org
Signed-off-by: Chuck Lever <cel@kernel.org>

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Jeff Layton 2026-07-10 10:00:11 -04:00 • committed by Chuck Lever

parent 3b0c3595db

commit 45b06a7508

1 changed files with 13 additions and 0 deletions

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fs/nfsd/nfs4xdr.c

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