On 11/17, Oleg Nesterov wrote: > > On 11/16, Oleg Nesterov wrote: > > > > On 11/16, Oleg Nesterov wrote: > > > > > > And I didn't check "make xcheck", I guess it still crashes the kernel. > > > > Yes it does. I am almost sure the bug should be trivial, but > > somehow can't find find it. > > Found the trivial but nasty problem. > > And! While this bug could perfectly explain the crash, it doesn't. > I appiled this patch > > --- UTRACE-PTRACE/kernel/fork.c~XXX_CRASH 2009-11-16 > 20:26:23.000000000 +0100 > +++ UTRACE-PTRACE/kernel/fork.c 2009-11-17 20:33:50.000000000 +0100 > @@ -1019,6 +1019,7 @@ static struct task_struct *copy_process( > if (!p) > goto fork_out; > > +p->utrace = NULL; > ftrace_graph_init_task(p); > > rt_mutex_init_task(p); > > but "make xcheck" still crashes. Still investigating.
Damn!!! It works, the kernel does NOT crash. (by mistake, I copied bzImage to the wrong location, iow I tested the kernel without the patch above). Oleg.
