On Wed, 11 Jul 2018 17:07:22 +0200
Mike Galbraith <efault@xxxxxx> wrote:
> --- a/arch/arm64/kernel/fpsimd.c
> +++ b/arch/arm64/kernel/fpsimd.c
> @@ -607,8 +607,8 @@ int sve_set_vector_length(struct task_st
> sve_to_fpsimd(task);
>
> if (task == current) {
> - local_unlock(fpsimd_lock);
> local_bh_enable();
> + local_unlock(fpsimd_lock);
> }
>
> /*
> @@ -841,8 +841,8 @@ asmlinkage void do_sve_acc(unsigned int
>
> sve_alloc(current);
>
> - local_bh_disable();
> local_lock(fpsimd_lock);
> + local_bh_disable();
>
> task_fpsimd_save();
> fpsimd_to_sve(current);
> @@ -854,8 +854,8 @@ asmlinkage void do_sve_acc(unsigned int
> if (test_and_set_thread_flag(TIF_SVE))
> WARN_ON(1); /* SVE access shouldn't have trapped */
>
> - local_unlock(fpsimd_lock);
> local_bh_enable();
> + local_unlock(fpsimd_lock);
> }
>
We really need to have a local_lock_bh(...)
-- Steve
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