The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x109431: block_demo_done. (2 locations)

Breakpoint 1.2, block_demo_done () at kernel/block.c:239
239	void block_demo_done(void) { __asm__ volatile("nop" ::: "memory"); }
PASS: timeout failure is diagnosed and channel fails closed