md: add mddev->pers to avoid potential NULL pointer dereference

When doing re-add, we need to ensure rdev->mddev->pers is not NULL,
which can avoid potential NULL pointer derefence in fallowing
add_bound_rdev().

Fixes: a6da4ef85cef ("md: re-add a failed disk")
Cc: Xiao Ni <[email protected]>
Cc: NeilBrown <[email protected]>
Cc: <[email protected]> # 4.4+
Reviewed-by: NeilBrown <[email protected]>
Signed-off-by: Yufen Yu <[email protected]>
Signed-off-by: Song Liu <[email protected]>

0 files changed, 0 insertions, 0 deletions