The target architecture is set to "i386". 0x0000fff0 in ?? () Hardware assisted breakpoint 1 at 0x108078: file kernel/task.c, line 1491. Breakpoint 1, fd_demo_done () at kernel/task.c:1491 1491 { __asm__ volatile("nop" ::: "memory"); } PASS: six ELF allocation failures plus kernel-stack failure rolled back mapped refs, then recovered