[BUG] block: bdi_register_owner() failure cause NULL pointer dereference

Hi, Folks We observed the hard lockup while trying raid assemble with sas3ircu, it was start with the failure inside bdi_register_owner() with duplicated kobj path, and later comeup the NULL pointer dereference, after that system hang and we saw hard lockup on screen. The duplicated issue could

[BUG] block: bdi_register_owner() failure cause NULL pointer dereference

Hi, Folks We observed the hard lockup while trying raid assemble with sas3ircu, it was start with the failure inside bdi_register_owner() with duplicated kobj path, and later comeup the NULL pointer dereference, after that system hang and we saw hard lockup on screen. The duplicated issue could