kernel: drm/i915/perf: add sentinel to xehp_oa_b_counters

A bounds-checking error was found in the Linux kernel Intel i915 graphics driver's performance monitoring subsystem. A local user with access to Intel GPU performance counters can trigger address validation for observability architecture counters on Xe-HP and newer hardware, causing the driver to...

kernel: drm/i915/perf: add sentinel to xehp_oa_b_counters

A bounds-checking error was found in the Linux kernel Intel i915 graphics driver's performance monitoring subsystem. A local user with access to Intel GPU performance counters can trigger address validation for observability architecture counters on Xe-HP and newer hardware, causing the driver to...