On 4/2/2024 4:49 AM, Jacek Lawrynowicz wrote:
ivpu_device->context_xa is locked both in kernel thread and IRQ context. It requires XA_FLAGS_LOCK_IRQ flag to be passed during initialization otherwise the lock could be acquired from a thread and interrupted by an IRQ that locks it for the second time causing the deadlock.This deadlock was reported by lockdep and observed in internal tests. Fixes: 35b137630f08 ("accel/ivpu: Introduce a new DRM driver for Intel VPU") Cc: <sta...@vger.kernel.org> # v6.3+ Signed-off-by: Jacek Lawrynowicz <jacek.lawrynow...@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jh...@quicinc.com>
