#debugging

• 2026-09-18 Finding an infinite loop in a game shader without running the game

  The World of Warcraft beta hung an NVIDIA GPU a few frames after every world load on Linux: Xid 109, device lost, client dead. Recording the Vulkan stream once and replaying it offline turned a hang that needed a logged-in game into one that could be bisected in seventeen-second runs, down to one compute shader with an unbounded tree traversal.

• 2026-09-07 Who keeps killing gnome-keyring?

  gnome-keyring-daemon 50.0 started aborting every ten minutes, hours after a password manager was installed. The password manager was innocent. A status bar widget was spawning several copies of a mail CLI at once, and each one hit a client-registration race in the daemon.

• 2026-09-07 A munmap of the wrong pointer that only crashes sometimes

  GTK 4.22 unmapped a heap struct instead of the dmabuf format table it meant to release. It only crashed when malloc happened to return a page-aligned chunk, and only on monitor hotplug. One second after replugging a display, the terminal was gone.