Re: 2.6.22.1-rt4 lockups

2007-07-23 Thread Ingo Molnar
* Daniel Walker <[EMAIL PROTECTED]> wrote: > It looks like sched_class->enqueue_task() is NULL and that's why the > system hangs .. > > The reason why that happens is because check_pgt_cache() is called > from the idle thread, and with PREEMPT_RT check_pgt_cache() locks at > least one mutex .

Re: 2.6.22.1-rt4 lockups

2007-07-23 Thread Daniel Walker
On Mon, 2007-07-23 at 09:08 -0700, Daniel Walker wrote: > On Sat, 2007-07-21 at 23:07 +0100, Rui Nuno Capela wrote: > > > Call Trace: > > [] show_trace_log_lvl+0x1a/0x30 > > [] show_stack_log_lvl+0xb6/0xe0 > > [] show_registers+0x201/0x330 > > [] die+0x118/0x260 > > [] do_page_fault+0x193/0x6

Re: 2.6.22.1-rt4 lockups

2007-07-23 Thread Daniel Walker
On Sat, 2007-07-21 at 23:07 +0100, Rui Nuno Capela wrote: > Call Trace: > [] show_trace_log_lvl+0x1a/0x30 > [] show_stack_log_lvl+0xb6/0xe0 > [] show_registers+0x201/0x330 > [] die+0x118/0x260 > [] do_page_fault+0x193/0x600 > [] error_code+0x72/0x78 > [] activate_task+0x4f/0xb0 > [] try_to

Re: 2.6.22.1-rt4 lockups

2007-07-22 Thread Rui Nuno Capela
Hi again, Sorry to bother, but got another one. Please advise whether these dumps are any useful or are just garbage. ... Oops: [#1] PREEMPT SMP Modules linked in: appletalk ax25 ipx p8023 snd_rtctimer snd_seq_dummy snd_pcm_oss snd_mixer_oss snd_seq_midi snd_seq_midi_event snd_seq w83627hf h