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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
> I think something like the below may address the issue - I've only build
> tested this so far.
>
> We have another case where DRM does the wrong thing here too - a similar
> thing goes on with connectors as well. I've not yet looked into this,
> but I'll take a look later today.
>
> Fengguang - could you give this some runs through your marvellous test
> system and see whether it fixes the problem you're seeing please?
Russell, I applied the patch (as commit 17e57131d4c2) on top of
v3.12-rc4 and here are the test results for the kernels with
CONFIG_DRM=y
CONFIG_DEBUG_KOBJECT_RELEASE=y
As you may see, it's pure improvements. :)
Tested-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
i386-randconfig-c3-1009
+---------------------------------------------------------------+-----------+--------------+
| | v3.12-rc4 |
17e57131d4c2 |
+---------------------------------------------------------------+-----------+--------------+
| has_kernel_error_warning | 63 |
|
| BUG:kernel_early_hang_without_any_printk_output | 7 |
|
| WARNING:CPU:PID:at_fs/sysfs/dir.c:sysfs_add_one() | 56 |
|
| WARNING:CPU:PID:at_lib/kobject.c:kobject_add_internal() | 56 |
|
| WARNING:CPU:PID:at_drivers/base/driver.c:driver_unregister() | 56 |
|
| WARNING:CPU:PID:at_lib/debugobjects.c:debug_print_object() | 56 |
|
| INFO:trying_to_register_non-static_key | 56 |
|
| BUG:unable_to_handle_kernel_NULL_pointer_dereference_at(null) | 56 |
|
| Oops:PREEMPT_SMP | 56 |
|
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 56 |
|
| BUG:kernel_boot_oops | 56 |
|
| good_boots | 0 | 9
|
+---------------------------------------------------------------+-----------+--------------+
x86_64-randconfig-j5-1009
+------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+------------+-----------+--------------+
| good_boots | 30 | 9 |
+------------+-----------+--------------+
x86_64-randconfig-j3-1009
+---------------------------------------------------------------+-----------+--------------+
| | v3.12-rc4 |
17e57131d4c2 |
+---------------------------------------------------------------+-----------+--------------+
| has_kernel_error_warning | 60 |
|
| WARNING:CPU:PID:at_fs/sysfs/dir.c:sysfs_add_one() | 60 |
|
| WARNING:CPU:PID:at_lib/kobject.c:kobject_add_internal() | 60 |
|
| WARNING:CPU:PID:at_drivers/base/driver.c:driver_unregister() | 60 |
|
| WARNING:CPU:PID:at_lib/debugobjects.c:debug_print_object() | 60 |
|
| WARNING:CPU:PID:at_arch/x86/kernel/irq_64.c:handle_irq() | 3 |
|
| BUG:unable_to_handle_kernel_NULL_pointer_dereference_at | 59 |
|
| Oops:DEBUG_PAGEALLOC | 28 |
|
| WARNING:CPU:PID:at_lib/list_debug.c:__list_del_entry() | 28 |
|
| BUG:scheduling_while_atomic | 30 |
|
| INFO:lockdep_is_turned_off | 30 |
|
| BUG:unable_to_handle_kernel_paging_request_at | 55 |
|
| kernel_BUG_at_kernel/smpboot.c | 13 |
|
| invalid_opcode:DEBUG_PAGEALLOC | 13 |
|
| general_protection_fault:DEBUG_PAGEALLOC | 2 |
|
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 4 |
|
| BUG:kernel_boot_oops | 60 |
|
| WARNING:CPU:PID:at_kernel/workqueue.c:work_fixup_activate() | 24 |
|
| WARNING:CPU:PID:at_kernel/workqueue.c:__queue_work() | 10 |
|
| BUG:unable_to_handle_kernel_NULL_pointer_dereference_at(null) | 2 |
|
| BUG:unable_to_handle_kernel | 1 |
|
| BUG:unable_to_handle_kernel_NULL_point | 1 |
|
| BUG:unable_to_handle_kernel_NULL_pointer_dereference | 4 |
|
| BUG:unable_to_handle_kernel_NULL_pointer_derefe | 1 |
|
| BUG:unable_to_handle_kernel_NULL_pointer_de | 1 |
|
| BUG:un | 1 |
|
| good_boots | 0 | 9
|
+---------------------------------------------------------------+-----------+--------------+
x86_64-randconfig-j1-1009
+-------------------------------------------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+-------------------------------------------------+-----------+--------------+
| has_kernel_error_warning | 60 | 9 |
| BUG:kernel_early_hang_without_any_printk_output | 60 | 9 |
+-------------------------------------------------+-----------+--------------+
x86_64-randconfig-j0-1009
+--------------------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+--------------------------+-----------+--------------+
| good_boots | 56 | 9 |
| has_kernel_error_warning | 4 | |
| BUG:kernel_test_crashed | 4 | |
+--------------------------+-----------+--------------+
x86_64-randconfig-a2-1009
+------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+------------+-----------+--------------+
| good_boots | 3 | 9 |
+------------+-----------+--------------+
x86_64-randconfig-c9-1009
+------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+------------+-----------+--------------+
| good_boots | 33 | 9 |
+------------+-----------+--------------+
x86_64-randconfig-c3-1009
+-------------------------------------------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+-------------------------------------------------+-----------+--------------+
| good_boots | 58 | 8 |
| has_kernel_error_warning | 5 | 1 |
| BUG:kernel_early_hang_without_any_printk_output | 5 | 1 |
+-------------------------------------------------+-----------+--------------+
i386-randconfig-r4-1009
+--------------------------------------------------------------+-----------+--------------+
| | v3.12-rc4 |
17e57131d4c2 |
+--------------------------------------------------------------+-----------+--------------+
| has_kernel_error_warning | 63 |
|
| WARNING:CPU:PID:at_fs/sysfs/dir.c:sysfs_add_one() | 63 |
|
| WARNING:CPU:PID:at_lib/kobject.c:kobject_add_internal() | 63 |
|
| WARNING:CPU:PID:at_drivers/base/driver.c:driver_unregister() | 63 |
|
| WARNING:CPU:PID:at_lib/debugobjects.c:debug_print_object() | 63 |
|
| INFO:trying_to_register_non-static_key | 63 |
|
| kernel_BUG_at_kernel/timer.c | 63 |
|
| invalid_opcode:SMP | 63 |
|
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 63 |
|
| BUG:kernel_boot_oops | 63 |
|
| good_boots | 0 | 9
|
+--------------------------------------------------------------+-----------+--------------+
i386-randconfig-r3-1009
+------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+------------+-----------+--------------+
| good_boots | 3 | 9 |
+------------+-----------+--------------+
i386-randconfig-r1-1009
+-------------------------------------------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+-------------------------------------------------+-----------+--------------+
| has_kernel_error_warning | 63 | 9 |
| BUG:kernel_early_hang_without_any_printk_output | 63 | 9 |
+-------------------------------------------------+-----------+--------------+
i386-randconfig-x2-1009
+------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+------------+-----------+--------------+
| good_boots | 3 | 9 |
+------------+-----------+--------------+
i386-randconfig-i008-1008
+-------------------------------------------------+-----------+--------------+
| | v3.12-rc4 | 17e57131d4c2 |
+-------------------------------------------------+-----------+--------------+
| has_kernel_error_warning | 60 | 9 |
| BUG:kernel_early_hang_without_any_printk_output | 60 | 9 |
+-------------------------------------------------+-----------+--------------+
x86_64-randconfig-x1-1009
+---------------------------------------------------------------+-----------+--------------+
| | v3.12-rc4 |
17e57131d4c2 |
+---------------------------------------------------------------+-----------+--------------+
| has_kernel_error_warning | 63 |
|
| WARNING:CPU:PID:at_fs/sysfs/dir.c:sysfs_add_one() | 63 |
|
| WARNING:CPU:PID:at_lib/kobject.c:kobject_add_internal() | 63 |
|
| WARNING:CPU:PID:at_drivers/base/driver.c:driver_unregister() | 63 |
|
| BUG:unable_to_handle_kernel_NULL_pointer_dereference_at(null) | 63 |
|
| Oops | 63 |
|
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 63 |
|
| BUG:kernel_boot_oops | 63 |
|
| INFO:trying_to_register_non-static_key | 2 |
|
| good_boots | 0 | 9
|
+---------------------------------------------------------------+-----------+--------------+
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