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0df5b5737c
When running libzpool with the Undefined Behavior Sanitizer (ubsan)
enabled, a zpool create causes a run-time error:
module/zfs/vdev_label.c:600:14: runtime error: shift exponent 64 is
too large for 64-bit type 'long long unsigned int'`
in vdev_config_generate()
Fix is to convert vdev_removal_max_span to its base-2 logarithm, using
highbit64(), and then compare the "shifts".
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Chuck Tuffli <ctuffli@gmail.com>
Closes #9744
Closes #11024
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