[PATCH v2 0/2] Fix XDR encoding near page boundaries

cel
2024-12-23T18:07:34Z

From: Chuck Lever <chuck.lever@oracle.com>

Build out the patch series to address the longstanding bug pointed
out by J David and Rick Macklem.

At least during NFSv4 COMPOUND encoding, using
write_bytes_to_xdr_buf() seems less brittle than saving a pointer
into the XDR encoding buffer.

I have one more patch to add (not yet included) that addresses the
issue in the NFSv4 READ and READ_PLUS encoders.

Changes since RFC:
- Document the guarantees around pointer returned by xdr_reserve_space()
- Use write_bytes_to_xdr_buf() instead

Chuck Lever (2):
NFSD: Encode COMPOUND operation status on page boundaries
SUNRPC: Document validity guarantees of the pointer returned by
reserve_space

fs/nfsd/nfs4xdr.c | 20 ++++++++++----------
net/sunrpc/xdr.c | 3 +++
2 files changed, 13 insertions(+), 10 deletions(-)

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2.47.0