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Mark Johnston
fceda40c1e
spa_prop_find() may fail to find the specified property, in which case
it suppresses ENOENT from zap_lookup(). In this case, the return value
is left uninitialized, so spa_autoreplace was being initialized using an
uninitialized stack variable.
This was found using KMSAN. It appears to be a regression from commit
9eb7b46ed0, which removed the initialization of "autoreplace" from the
definition.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Mark Johnston <markj@FreeBSD.org>
Closes #12383