Hi, I have seen the following message while booting 2.6.26-rt1 kernel on x86_64. I have enabled CONFIG_DEBUG_LOCK_ALLOC, CONFIG_PROVE_LOCKING, CONFIG_LOCKDEP. CONFIG_LOCK_STAT, CONFIG_DEBUG_LOCKDEP in the config. INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. Pid: 0, comm: swapper Not tainted 2.6.26-rt1 #1 Call Trace: [<ffffffff81055365>] ? static_obj+0x74/0x80 [<ffffffff810582d1>] __lock_acquire+0x911/0xc4c [<ffffffff81056eb8>] ? mark_lock+0x85/0x41d [<ffffffff8105e129>] ? rt_mutex_slowtrylock+0x18/0x85 [<ffffffff8105869a>] lock_acquire+0x8e/0xb2 [<ffffffff8105e129>] ? rt_mutex_slowtrylock+0x18/0x85 [<ffffffff812b630f>] __spin_lock_irqsave+0x40/0x73 [<ffffffff8105e129>] rt_mutex_slowtrylock+0x18/0x85 [<ffffffff812b4175>] rt_mutex_trylock+0x9/0xb [<ffffffff812b57ed>] rt_spin_lock+0x31/0x56 [<ffffffff8104e99d>] compat_down_timeout+0x12/0x47 [<ffffffff8117815e>] acpi_os_wait_semaphore+0x9b/0x12e [<ffffffff81057480>] ? trace_hardirqs_on+0xd/0xf [<ffffffff811975ca>] acpi_ut_acquire_mutex+0x86/0x114 [<ffffffff8118b610>] acpi_ns_root_initialize+0x21/0x2d9 [<ffffffff815c13a1>] acpi_initialize_subsystem+0x66/0x8e [<ffffffff815c165f>] acpi_early_init+0x54/0xfc [<ffffffff815a3b5b>] start_kernel+0x357/0x37f [<ffffffff815a3428>] x86_64_start_kernel+0x237/0x242 INFO: lockdep is turned off. --------------------------- | preempt count: 00000002 ] | 2-level deep critical section nesting: ---------------------------------------- .. [<ffffffff815a3961>] .... start_kernel+0x15d/0x37f .....[<ffffffff815a3428>] .. ( <= x86_64_start_kernel+0x237/0x242) .. [<ffffffff812b62f2>] .... __spin_lock_irqsave+0x23/0x73 .....[<ffffffff8105e129>] .. ( <= rt_mutex_slowtrylock+0x18/0x85) Parsing all Control Methods: Table [DSDT](id 0001) - 933 Objects with 49 Devices 142 Methods 11 Regions tbxface-0598 [00] tb_load_namespace : ACPI Tables successfully acquired evxfevnt-0091 [00] enable : Transition to ACPI mode successful CPU0: Dual-Core AMD Opteron(tm) Processor 2218 stepping 02 Using local APIC timer interrupts. APIC timer calibration result 12500428 Thanks, Sripathi. -- 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
