Am Mittwoch 18 Januar 2012 schrieb John Kacur: > I got a whole bunch of these in 3.0.14-rt31 that basically look alike. > Will try to drill deeper down. In the meantime, I'm happy to provide > more information if anyone would like. > Thanks, John > > [ 4251.928097] BUG: sleeping function called from invalid context at > /home/jkacur/rt.linux.git/kernel/rtmutex.c:645 > [ 4251.928100] in_atomic(): 1, irqs_disabled(): 1, pid: 168, name: irq/9-acpi > [ 4251.928102] INFO: lockdep is turned off. > [ 4251.928103] irq event stamp: 5888 > [ 4251.928104] hardirqs last enabled at (5887): [<ffffffff810b2a69>] > rcu_preempt_note_context_switch+0x1c8/0x1d9 > [ 4251.928109] hardirqs last disabled at (5888): [<ffffffff813e4326>] > _raw_spin_lock_irq+0x19/0x79 > [ 4251.928113] softirqs last enabled at (0): [<ffffffff81041c88>] > copy_process+0x517/0xfbd > [ 4251.928116] softirqs last disabled at (0): [< (null)>] > (null) > [ 4251.928119] Pid: 168, comm: irq/9-acpi Not tainted > 3.0.14-rt31-debug-00322-g6aaac97b #1 > [ 4251.928121] Call Trace: > [ 4251.928125] [<ffffffff81037b06>] __might_sleep+0xf4/0xf9 > [ 4251.928128] [<ffffffff8107e4f5>] rt_spin_lock_fastlock.clone.0+0x24/0x31 > [ 4251.928130] [<ffffffff813e3b33>] rt_spin_lock+0x16/0x40 > [ 4251.928133] [<ffffffff8103eb60>] __wake_up+0x28/0x50 > [ 4251.928136] [<ffffffff8122ca51>] acpi_ec_gpe_handler+0x72/0xc4 > [ 4251.928145] [<ffffffff81238443>] acpi_ev_gpe_dispatch+0xbd/0x12e > [ 4251.928147] [<ffffffff81238727>] acpi_ev_gpe_detect+0xbb/0x110 The bug happens because acpi_ev_gpe_detect does raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags) before it calls acpi_ev_gpe_dispatch. -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
