[linux-next20251111]KASAN null-ptr-deref in bio_get_last_bvec() after "block: accumulate memory segment gaps per bio"

[Keith Busch]

On Tue, Nov 11, 2025 at 08:54:39PM +0530, Venkat Rao Bagalkote wrote:
> Greetings!!!
> 
> IBM CI has reported a null pointer dereference, while running xfstests.

Thanks, this bug was also reported late yesterday and a proposed fix was
posted just earlier today:

  https://lore.kernel.org/linux-block/20251111140620.2606536-1-kbusch@meta.com/