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7dc2baaa1f
While I have no reports of it, I suspect possible use-after-free scenario when zil_commit_waiter() tries to dereference zcw_lwb for lwb already freed by zil_sync(), while zcw_done is not set. Extension of zl_lock scope as it was originally should block zil_sync() from freeing the lwb, closing this race. This reverts #14959 and couple chunks of #14841. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #15228 |
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