Linux Kernel Spin Lock Deadlock Vulnerability in drm/i915/gt Component

A vulnerability has been addressed in the Linux kernel's drm/i915/gt component, where the use of spin_lock and spin_unlock functions in interrupt contexts could lead to a deadlock. This issue arises when an interrupt occurs while a lock is held, creating a conflict. The vulnerability has been resolved by modifying the lock management to save the interrupt request (irq) state before acquiring the spin lock, preventing potential deadlocks.

Impact

The vulnerability could cause a deadlock situation, where processes become stuck waiting for each other to release locks, potentially leading to system hangs or unresponsiveness.