[PATCH 5/7] iommu/arm-smmu-v3-test: Add missing error checks for inv array

[Mostafa Saleh]

On Fri, Aug 28, 2026 at 11:27:22AM -0300, Jason Gunthorpe wrote:
> > arm_smmu_invs_merge() and arm_smmu_invs_alloc() can return NULL or
> > errors which are checked by the driver but not the test.
> > 
> > Add KUNIT_ASSERT_NOT_ERR_OR_NULL() after calling them to fail the
> > test instead of accessing NULL or ERR pointers.
> 
> I've generally had the opinion that if kunit tests hit bugs I don't
> actually care what happens next so long as the bug is evident.. Many
> tests can't clean up when they get longjump'd out like this too.

I tend to agree as that's how I use kunit also, but I'd be extra
careful around crashing the kernel from kunit as it can be triggered
from userspace.

Thanks,
Mostafa

> 
> So, IDK, it is fine but I also think this is in a category that maybe
> sashiko prompts should address instead somehow.
> 
> -- 
> Jason