xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots

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LOLLM noticed that the inode btree root formatting methods copy too many
bytes -- there's only one set of keys in node blocks, not two.  This
causes memory corruption of whatever's beyond the buffers.

Cc: stable@vger.kernel.org # v6.14
Fixes: f0415af60f ("xfs: wire up a new metafile type for the realtime refcount")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

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Darrick J. Wong 2026-09-14 22:39:25 -07:00 • committed by Carlos Maiolino

parent 476582d754

commit fe2f9135df

1 changed files with 2 additions and 2 deletions

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fs/xfs/libxfs/xfs_rtrefcount_btree.c

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