pkg/cover: fix comparison filtering

If coverage filter is enabled, executor filters comparisons based on PCs.
But we don't include comparison callback PCs in the filter,
so most of them will be falsely filtered away.
Add comparison callback PCs to symbols and compile units and use
both when creating coverage filter. But still use only coverage
PCs while generating coverage reports.

Reported-by: Kaipeng Zeng
Link: https://groups.google.com/g/syzkaller/c/mD0wv-A2wno/m/v1ntQbTUAwAJ

0 files changed, 0 insertions, 0 deletions