Re: [Xen-devel] UBSAN report in find_next_bit()

[Julien Grall <julien.grall@xxxxxxx>]

Hi Andrew,

On 24/06/2019 17:24, Andrew Cooper wrote:
> ARM64's find_next_bit() explicitly copes with offset >= size, and while
> I don't speak ARM asm well enough to work out whether
> _find_first_bit_le() copes with offset == size, the vgic.c code
> definitely expects it to function in this way.
I looked at the instance of find_* in arch/arm/vgic.c. AFAICT, all of them will 
always be called with offset < size. Could you point which one you think will 
relies on offset == size?
Cheers,

--
Julien Grall

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