When spamming file changes rapidly, inotify can report stale UNLOAD/RELOAD
events for modules that were already unloaded by previous events in the same
poll cycle. This caused is_mod_loaded() to return -1, which was then cast to
size_t (18446744073709551615) and used as an array index, causing segfaults.
Additionally, event counts were calculated before validation, causing loops to
run more iterations than valid indices were populated, reading garbage values.
Changes:
- stk.c: Check if is_mod_loaded() returns valid index (>= 0) before adding
to unload/reload lists
- stk.c: Reset and recalculate counts after populating arrays with only valid
indices to prevent loop overrun
- Skip processing events for modules that are no longer loaded
This completes the Linux stability fixes started in v0.0.2.
anth64
2c4d27f915