From: Fengguang Wu <fengguang.wu@intel.com>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Dave Airlie <airlied@linux.ie>,
Linus Torvalds <torvalds@linux-foundation.org>,
xen-devel@lists.xenproject.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
Date: Fri, 11 Oct 2013 13:14:51 +0800 [thread overview]
Message-ID: <20131011051451.GA12193@localhost> (raw)
In-Reply-To: <20131010105324.GA5105@n2100.arm.linux.org.uk>
> 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@intel.com>
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 |
+---------------------------------------------------------------+-----------+--------------+
next prev parent reply other threads:[~2013-10-11 5:14 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-06 8:23 [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Fengguang Wu
2013-10-06 17:26 ` Linus Torvalds
2013-10-07 2:11 ` Fengguang Wu
2013-10-07 5:10 ` Fengguang Wu
2013-10-07 8:12 ` Linus Torvalds
[not found] ` <20131007083505.GA22585@localhost>
2013-10-07 22:14 ` Linus Torvalds
2013-10-07 22:29 ` Russell King - ARM Linux
2013-10-07 23:33 ` Russell King - ARM Linux
2013-10-07 23:47 ` Linus Torvalds
2013-10-08 2:09 ` Fengguang Wu
2013-10-08 2:14 ` Fengguang Wu
2013-10-08 2:36 ` Fengguang Wu
2013-10-08 3:07 ` Linus Torvalds
2013-10-08 2:51 ` Linus Torvalds
2013-10-08 3:11 ` Fengguang Wu
2013-10-08 3:29 ` Linus Torvalds
2013-10-08 3:35 ` Fengguang Wu
2013-10-08 4:35 ` [DRM_CURRUS_QEMU/timer] WARNING: CPU: 0 PID: 1 at debug_print_object() Fengguang Wu
2013-10-08 12:17 ` [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Fengguang Wu
2013-10-08 22:14 ` Russell King - ARM Linux
2013-10-08 22:48 ` Greg Kroah-Hartman
2013-10-09 0:45 ` Linus Torvalds
2013-10-09 1:18 ` Dave Jones
2013-10-09 1:26 ` [PATCH] kobject: show debug info on delayed kobject release Fengguang Wu
2013-10-09 14:47 ` Russell King - ARM Linux
2013-10-09 14:12 ` [xen] double fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Josh Boyer
2013-10-09 0:46 ` Fengguang Wu
2013-10-08 8:06 ` Russell King - ARM Linux
2013-10-10 2:23 ` Dave Airlie
2013-10-10 2:38 ` Linus Torvalds
2013-10-10 9:19 ` Russell King - ARM Linux
2013-10-10 10:53 ` Russell King - ARM Linux
2013-10-11 3:55 ` Dave Airlie
2013-10-11 4:28 ` Dave Airlie
2013-10-11 5:14 ` Fengguang Wu [this message]
2013-10-23 11:20 ` Xiong Zhou
2013-10-08 2:43 ` Linus Torvalds
2013-10-08 7:58 ` Ingo Molnar
2013-10-08 8:20 ` Fengguang Wu
2013-10-08 8:26 ` Ingo Molnar
2013-10-08 9:34 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2013-10-06 22:14 Boris Ostrovsky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20131011051451.GA12193@localhost \
--to=fengguang.wu@intel.com \
--cc=airlied@linux.ie \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@arm.linux.org.uk \
--cc=torvalds@linux-foundation.org \
--cc=xen-devel@lists.xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).