linux-kernel - BUG: spinlock bad magic on CPU#0

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Date:	Fri, 14 Jan 2011 16:08:03 +0200
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Len Brown <lenb@...nel.org>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: BUG: spinlock bad magic on CPU#0

Hello,

Acer Aspire  5741g
2.6.37-git11

Got this trace today:

[    0.814609] ACPI: EC: Look up EC in DSDT
[    0.825556] BUG: spinlock bad magic on CPU#0, swapper/1
[    0.825639]  lock: ffffffff8242fa90, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[    0.825741] Pid: 1, comm: swapper Not tainted 2.6.37-dbg-git11-07456-gdbc61c6-dirty #359
[    0.825841] Call Trace:
[    0.825923]  [<ffffffff81247919>] ? spin_bug+0x9c/0xa3
[    0.826004]  [<ffffffff812479e9>] ? do_raw_spin_lock+0x29/0x122
[    0.826093]  [<ffffffff814867e5>] ? _raw_spin_lock_irqsave+0x56/0x60
[    0.826181]  [<ffffffff81275e8a>] ? acpi_os_acquire_lock+0x9/0xb
[    0.826264]  [<ffffffff81275e8a>] ? acpi_os_acquire_lock+0x9/0xb
[    0.826350]  [<ffffffff81288fad>] ? acpi_ev_acquire_global_lock+0x10b/0x206
[    0.826438]  [<ffffffff8129620c>] ? acpi_ex_acquire_mutex_object+0xa3/0x11d
[    0.826525]  [<ffffffff812952e3>] ? acpi_ex_acquire_global_lock+0x61/0xa2
[    0.826613]  [<ffffffff8128def7>] ? acpi_ex_read_data_from_field+0x293/0x2f1
[    0.826701]  [<ffffffff81296e88>] ? acpi_ex_resolve_node_to_value+0x320/0x444
[    0.826789]  [<ffffffff812a8587>] ? acpi_ut_trace_ptr+0x58/0x65
[    0.826874]  [<ffffffff8128efb1>] ? acpi_ex_resolve_to_value+0x379/0x406
[    0.826961]  [<ffffffff81284efb>] ? acpi_ds_evaluate_name_path+0x9e/0x143
[    0.827048]  [<ffffffff812824c5>] ? acpi_ds_exec_end_op+0xda/0x641
[    0.827131]  [<ffffffff812a844c>] ? acpi_ut_status_exit+0x6f/0x80
[    0.827216]  [<ffffffff812a2e5c>] ? acpi_ps_parse_loop+0xc65/0xf45
[    0.827302]  [<ffffffff812a1acf>] ? acpi_ps_parse_aml+0x162/0x467
[    0.827385]  [<ffffffff812a8691>] ? acpi_ut_ptr_exit+0x33/0x3b
[    0.827470]  [<ffffffff812a3b5a>] ? acpi_ps_execute_method+0x26d/0x393
[    0.827558]  [<ffffffff8129c14d>] ? acpi_ns_evaluate+0x235/0x3b7
[    0.827643]  [<ffffffff812ab605>] ? acpi_ut_add_reference+0xb1/0xb8
[    0.827730]  [<ffffffff8129c42a>] ? acpi_ns_exec_module_code_list+0x15b/0x25d
[    0.827818]  [<ffffffff812a9dbb>] ? acpi_initialize_objects+0x88/0x17d
[    0.827907]  [<ffffffff81ad43ff>] ? acpi_init+0x0/0x10a
[    0.827990]  [<ffffffff81ad42c1>] ? acpi_bus_init+0x9f/0x1dd
[    0.828076]  [<ffffffff8123c24b>] ? kobject_create_and_add+0x37/0x68
[    0.828162]  [<ffffffff81ad4470>] ? acpi_init+0x71/0x10a
[    0.828248]  [<ffffffff810002ee>] ? do_one_initcall+0x7a/0x13c
[    0.828334]  [<ffffffff81aacda0>] ? kernel_init+0x16c/0x1f0
[    0.828420]  [<ffffffff81002fa4>] ? kernel_thread_helper+0x4/0x10
[    0.828506]  [<ffffffff81031ab3>] ? finish_task_switch+0x78/0xec
[    0.828592]  [<ffffffff81487318>] ? restore_args+0x0/0x30
[    0.828677]  [<ffffffff81aacc34>] ? kernel_init+0x0/0x1f0
[    0.828760]  [<ffffffff81002fa0>] ? kernel_thread_helper+0x0/0x10
[    0.828935] ACPI: Executed 1 blocks of module-level executable AML code


	Sergey

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