Re: [PATCH] bcachefs: fix null-ptr-deref in have_stripes()

[Kent Overstreet]

On Thu, Oct 24, 2024 at 01:13:45AM +0900, Jeongjun Park wrote:
> c->btree_roots_known[i].b can be NULL. In this case, a NULL pointer dereference
> occurs, so you need to add code to check the variable.
> 
> Reported-by: syzbot+b468b9fef56949c3b528@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: ("bcachefs: metadata version bucket_stripe_sectors")
> Signed-off-by: Jeongjun Park <aha310510@xxxxxxxxx>

Thanks, applied