Re: [PATCH] fs: xfs: fix possible NULL pointer dereference in xfs_rw_bdev()

[Christoph Hellwig]

On Mon, Apr 11, 2022 at 07:31:45PM +0800, Zixuan Fu wrote:
> In our fault-injection testing, bio_alloc() may fail with low memory and
> return NULL.

Well, in that case your fault injection seems to be completely broken.
Please take a closer look at how bio_alloc is implemented and
documented.