When a procfs file belonging to a process which was in PS_TRACED status was accessed, calling kprintf() from process_procfs_request() caused stack overrun, and x86_cpu_local_variables was destroyed.
When a procfs file belonging to a process which was in PS_TRACED status was accessed, calling kprintf() from process_procfs_request() caused stack overrun, and x86_cpu_local_variables was destroyed.