The task that was running when die() was called. The task that was running when panic() was called. The task that was running when an ALT-SYSRQ-c keyboard interrupt was received. The task that was running when the character "c" was echoed to /proc/sysrq-trigger.
crash> set PID: 2366 COMMAND: "crash" TASK: ffff88001ae60000 [THREAD_INFO: ffff88001c1f0000] CPU: 0 STATE: TASK_RUNNING (ACTIVE)
crash> set 1 PID: 1 COMMAND: "systemd" TASK: ffff88001dfd8000 [THREAD_INFO: ffff88001dfe0000] CPU: 0 STATE: TASK_INTERRUPTIBLE