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Message-Id: <200702140000.l1E00pCL012981@turbo.physics.adelaide.edu.au> Date: Wed, 14 Feb 2007 10:30:51 +1030 (CST) From: Jonathan Woithe <jwoithe@...sics.adelaide.edu.au> To: linux-kernel@...r.kernel.org Cc: jwoithe@...sics.adelaide.edu.au (Jonathan Woithe) Subject: 2.6.20-rt5: BUG: scheduling while atomic When running 2.6.20-rt5 on a Via Apollo based mainboard with the "low latency desktop" preemption setting active the following messages were logged. This isn't all of them - there were quite a few, some of which passed out of the message buffer. I didn't see this with 2.6.19.2. I don't know about earlier -rt kernels because the machine concerned is a recent acquisition. Any ideas? I'm happy to test things if it will help narrow down the problem. Regards jonathan ======================= BUG: scheduling while atomic: swapper/0x00000001/1, CPU#0 [<c0360e21>] __sched_text_start+0x91/0x5f5 [<c036146b>] schedule+0xe6/0x100 [<c0124ed8>] flush_cpu_workqueue+0x92/0xd0 [<c01279f1>] autoremove_wake_function+0x0/0x33 [<c01279f1>] autoremove_wake_function+0x0/0x33 [<c0152188>] filevec_add_drain_per_cpu+0x0/0x2 [<c0124f3a>] flush_workqueue+0x24/0x2f [<c012536a>] schedule_on_each_cpu_wq+0x82/0x92 [<c017e44d>] remove_proc_entry+0x110/0x167 [<c017e379>] remove_proc_entry+0x3c/0x167 [<c011c1f3>] unregister_proc_table+0x60/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c07d>] unregister_sysctl_table+0x21/0x3f [<c02b2c9c>] parport_device_proc_unregister+0x16/0x22 [<c02b08bb>] parport_unregister_device+0xc/0xf9 [<c02b3c11>] parport_device_id+0xa4/0xaf [<c02b2e88>] parport_daisy_init+0x130/0x1c0 [<c0135045>] setup_irq+0x19b/0x1f8 [<c02b04f4>] parport_announce_port+0x9/0xb4 [<c02b6496>] parport_pc_probe_port+0x57a/0x5e9 [<c02b6b9f>] sio_via_probe+0x325/0x398 [<c011b9f3>] __request_region+0x4e/0x86 [<c04601aa>] parport_pc_init_superio+0x43/0x67 [<c04601e7>] parport_pc_find_ports+0x19/0x69 [<c046062c>] parport_pc_init+0x88/0x91 [<c044a758>] do_initcalls+0x58/0xf5 [<c017e241>] proc_mkdir_mode+0x3e/0x51 [<c0136436>] register_irq_proc+0x5a/0x6a [<c0100376>] init+0x0/0x14e [<c01003b9>] init+0x43/0x14e [<c0103827>] kernel_thread_helper+0x7/0x10 ======================= BUG: scheduling while atomic: swapper/0x00000001/1, CPU#0 [<c0360e21>] __sched_text_start+0x91/0x5f5 [<c036146b>] schedule+0xe6/0x100 [<c0124ed8>] flush_cpu_workqueue+0x92/0xd0 [<c01279f1>] autoremove_wake_function+0x0/0x33 [<c01279f1>] autoremove_wake_function+0x0/0x33 [<c0152188>] filevec_add_drain_per_cpu+0x0/0x2 [<c0124f3a>] flush_workqueue+0x24/0x2f [<c012536a>] schedule_on_each_cpu_wq+0x82/0x92 [<c017e44d>] remove_proc_entry+0x110/0x167 [<c017e379>] remove_proc_entry+0x3c/0x167 [<c011c1f3>] unregister_proc_table+0x60/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c07d>] unregister_sysctl_table+0x21/0x3f [<c02b2c9c>] parport_device_proc_unregister+0x16/0x22 [<c02b08bb>] parport_unregister_device+0xc/0xf9 [<c02b3c11>] parport_device_id+0xa4/0xaf [<c02b2e88>] parport_daisy_init+0x130/0x1c0 [<c0135045>] setup_irq+0x19b/0x1f8 [<c02b04f4>] parport_announce_port+0x9/0xb4 [<c02b6496>] parport_pc_probe_port+0x57a/0x5e9 [<c02b6b9f>] sio_via_probe+0x325/0x398 [<c011b9f3>] __request_region+0x4e/0x86 [<c04601aa>] parport_pc_init_superio+0x43/0x67 [<c04601e7>] parport_pc_find_ports+0x19/0x69 [<c046062c>] parport_pc_init+0x88/0x91 [<c044a758>] do_initcalls+0x58/0xf5 [<c017e241>] proc_mkdir_mode+0x3e/0x51 [<c0136436>] register_irq_proc+0x5a/0x6a [<c0100376>] init+0x0/0x14e [<c01003b9>] init+0x43/0x14e [<c0103827>] kernel_thread_helper+0x7/0x10 ======================= BUG: scheduling while atomic: swapper/0x00000001/1, CPU#0 [<c0360e21>] __sched_text_start+0x91/0x5f5 [<c036146b>] schedule+0xe6/0x100 [<c0124ed8>] flush_cpu_workqueue+0x92/0xd0 [<c01279f1>] autoremove_wake_function+0x0/0x33 [<c01279f1>] autoremove_wake_function+0x0/0x33 [<c0152188>] filevec_add_drain_per_cpu+0x0/0x2 [<c0124f3a>] flush_workqueue+0x24/0x2f [<c012536a>] schedule_on_each_cpu_wq+0x82/0x92 [<c017e44d>] remove_proc_entry+0x110/0x167 [<c017e379>] remove_proc_entry+0x3c/0x167 [<c011c1f3>] unregister_proc_table+0x60/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c1cf>] unregister_proc_table+0x3c/0x73 [<c011c07d>] unregister_sysctl_table+0x21/0x3f [<c02b2c9c>] parport_device_proc_unregister+0x16/0x22 [<c02b08bb>] parport_unregister_device+0xc/0xf9 [<c02b3c11>] parport_device_id+0xa4/0xaf [<c02b2e88>] parport_daisy_init+0x130/0x1c0 [<c0135045>] setup_irq+0x19b/0x1f8 [<c02b04f4>] parport_announce_port+0x9/0xb4 [<c02b6496>] parport_pc_probe_port+0x57a/0x5e9 [<c02b6b9f>] sio_via_probe+0x325/0x398 [<c011b9f3>] __request_region+0x4e/0x86 [<c04601aa>] parport_pc_init_superio+0x43/0x67 [<c04601e7>] parport_pc_find_ports+0x19/0x69 [<c046062c>] parport_pc_init+0x88/0x91 [<c044a758>] do_initcalls+0x58/0xf5 [<c017e241>] proc_mkdir_mode+0x3e/0x51 [<c0136436>] register_irq_proc+0x5a/0x6a [<c0100376>] init+0x0/0x14e [<c01003b9>] init+0x43/0x14e [<c0103827>] kernel_thread_helper+0x7/0x10 ======================= lp0: using parport0 (interrupt-driven). parport_pc: VIA parallel port: io=0x378, irq=7 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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