[PATCH 2/2] riscv: Sanitize syscall table indexing under speculation

[Paul Walmsley]

On Thu, 18 Dec 2025, Lukas Gerlach wrote:

> The syscall number is a user-controlled value used to index into the
> syscall table. Use array_index_nospec() to clamp this value after the
> bounds check to prevent speculative out-of-bounds access and subsequent
> data leakage via cache side channels.
> 
> Signed-off-by: Lukas Gerlach <lukas.gerlach at cispa.de>

Thanks, queued for v6.19-rc.


- Paul