On Sat, 1 December 2007 19:32:56 +0100, Ingo Molnar wrote: > * Jörn Engel <joern@xxxxxxxxx> wrote: > > > I have to change my qemu setup a little to see the top of those > > dumps... > > btw., if you start qemu like this: > > qemu -cdrom ./cdrom.iso -hda ./hda.img -boot c -full-screen -kernel > ~/bzImage -append "root=/dev/hda1 earlyprintk=serial,ttyS0,9600 > console=tty console=ttyS0,9600 enforcing=0 debug" > > you'll get the inner kernel's serial console log to qemu's standard > output. Pretty useful for capturing kernel crashes. Almost. "-serial stdio" was missing. Much better now. stopped custom tracer. BUG: spinlock recursion on CPU#0, sh/953 lock: c030f280, .magic: dead4ead, .owner: sh/953, .owner_cpu: 0 Pid: 953, comm: sh Not tainted 2.6.24-rc3-ge1cca7e8-dirty #2 [<c0103a04>] show_trace_log_lvl+0x35/0x54 [<c010450a>] show_trace+0x2c/0x2e [<c0104e6d>] dump_stack+0x84/0x8a [<c01ded7c>] spin_bug+0xa7/0xae [<c01def14>] _raw_spin_lock+0x45/0xfa [<c02a02b1>] _spin_lock_irqsave+0x68/0x7a [<c01087e7>] pit_read+0x14/0x99 [<c0130ee9>] get_monotonic_cycles+0xf/0x2d [<c013c0ef>] now+0x2a/0x7c [<c013c33b>] ____trace+0x4d/0x1e8 [<c013dbf3>] __mcount+0x95/0xa6 [<c010d35c>] mcount+0x14/0x18 [<c0135a44>] lock_acquired+0xe/0x1d7 [<c02a02b9>] _spin_lock_irqsave+0x70/0x7a [<c01087e7>] pit_read+0x14/0x99 [<c0130791>] update_wall_time+0x23/0x692 [<c0121756>] do_timer+0x24/0xb1 [<c01331fe>] tick_periodic+0x49/0x84 [<c013325b>] tick_handle_periodic+0x22/0x73 [<c0106315>] timer_interrupt+0x4f/0x56 [<c013e2c7>] handle_IRQ_event+0x24/0x4f [<c013f44a>] handle_edge_irq+0xb8/0x125 [<c01054ee>] do_IRQ+0x89/0xa3 [<c01033df>] common_interrupt+0x23/0x28 [<c015d924>] vfs_write+0xa6/0x14c [<c015df6e>] sys_write+0x4c/0x70 [<c0102a1f>] syscall_call+0x7/0xb ======================= I assume you have the latency tracer working. If you could send me your config, I could do a manual config-bisect and see which part of mine causes the problem. Jörn -- Admonish your friends privately, but praise them openly. -- Publilius Syrus _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
