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6e3c109bc0
Direct I/O implementation added condition to call dbuf_undirty() only in case of block cloning. But the condition is not right if the block is no longer dirty in this TXG, but still in DB_NOFILL state. It resulted in block not reverting to DB_UNCACHED and following NULL de-reference on attempt to access absent db_data. While there, add assertions for db_data to make debugging easier. Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #16829 |
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