3 ms·
Agree, but even 100% test coverage can't catch this kind of bug. I don't know of any systematic testing method which would be able to catch it. Maybe something
by max_k 5y ago
Agree, but even 100% test coverage can't catch this kind of bug. I don't know of any systematic testing method which would be able to catch it. Maybe something like valgrind which detects accesses to uninitialized memory, but then you'd still have to execute very special code paths (which is "more" than 100% coverage).
- aaronmdjones 5y agoValgrind cannot be used for/in the kernel. However, the kernel has an almost-equivalent use-of-uninitialized-memory detector; https://www.kernel.org/doc/html/v4.14/dev-tools/kmemcheck.html https://www.kernel.org/doc/html/v4.14/dev-tools/kmemcheck.ht...