kernel panics when hot removing U.2 nvme disk

[Christoph Hellwig]

On Thu, Sep 24, 2020 at 05:47:12AM +0000, Meng Wang wrote:
> Thanks for the info. Is it a problem solely for ext4 + nvme combination? If we change file system or use SATA drive, will the problem get workaround?

This will be called for all removals.  I think the root cause probably
is in ext4 where the evict_inode method doesn't properly deal with
non available storage.