lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date:   Tue, 27 Dec 2016 09:11:50 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, LKP <lkp@...org>
Subject: [usb_add_gadget_udc_release] bea5b158ff WARNING: CPU: 0 PID: 1 at
 lib/kobject.c:597 kobject_get

Greetings,

Here is an USB WARNING triggered by Rob's test patch.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

commit bea5b158ff0da9c7246ff391f754f5f38e34577a
Author:     Rob Herring <robh@...nel.org>
AuthorDate: Thu Aug 11 10:20:58 2016 -0500
Commit:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CommitDate: Wed Aug 31 15:13:55 2016 +0200

     driver core: add test of driver remove calls during probe
     
     In recent discussions on ksummit-discuss[1], it was suggested to do a
     sequence of probe, remove, probe for testing driver remove paths. This
     adds a kconfig option for said test.
     
     [1] https://lists.linuxfoundation.org/pipermail/ksummit-discuss/2016-August/003459.html
     
     Suggested-by: Arnd Bergmann <arnd@...db.de>
     Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
     Signed-off-by: Rob Herring <robh@...nel.org>
     Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

+---------------------------------------------------+------------+------------+------------+
|                                                   | cebf8fd169 | bea5b158ff | 5cc3c0a7bf |
+---------------------------------------------------+------------+------------+------------+
| boot_successes                                    | 416        | 21         | 1          |
| boot_failures                                     | 4          | 76         | 12         |
| BUG:kernel_reboot-without-warning_in_test_stage   | 4          |            |            |
| calltrace:init                                    | 0          | 76         |            |
| WARNING:at_lib/kobject.c:#kobject_get             | 0          | 67         | 8          |
| INFO:task_blocked_for_more_than#seconds           | 0          | 28         | 7          |
| calltrace:kernfs_notify_workfn                    | 0          | 23         |            |
| calltrace:ret_from_fork                           | 0          | 28         |            |
| RIP:__default_send_IPI_dest_field                 | 0          | 28         |            |
| calltrace:watchdog                                | 0          | 28         |            |
| RIP:kernfs_link_sibling                           | 0          | 9          |            |
| Kernel_panic-not_syncing:hung_task:blocked_tasks  | 0          | 28         | 7          |
| BUG:unable_to_handle_kernel                       | 0          | 3          | 2          |
| Oops                                              | 0          | 3          | 2          |
| RIP:kobject_get                                   | 0          | 3          |            |
| Kernel_panic-not_syncing:Fatal_exception          | 0          | 3          | 2          |
| RIP:__sanitizer_cov_trace_pc                      | 0          | 19         |            |
| WARNING:at_drivers/usb/core/urb.c:#usb_submit_urb | 0          | 6          |            |
| calltrace:hub_init_func2                          | 0          | 2          |            |
| calltrace:pm_runtime_work                         | 0          | 4          |            |
| calltrace:ring_buffer_producer_thread             | 0          | 1          |            |
| calltrace:usb_gadget_state_work                   | 0          | 5          |            |
| BUG:kernel_hang_in_test_stage                     | 0          | 39         | 3          |
| WARNING:at_kernel/workqueue.c:#worker_thread      | 0          | 1          |            |
+---------------------------------------------------+------------+------------+------------+

[   21.806527] hub 1-0:1.0: 1 port detected
[   21.809142] kobject (ffff88001cb86f78): tried to init an initialized object, something is seriously wrong.
[   21.810522] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc4-00003-gbea5b15 #1
[   21.824599] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[   21.826031]  0000000000000297 ffff88001f7c3b48 ffffffff9efb5abe ffff88001cb86f78
[   21.827157]  ffffffffa06ab160 ffff88001cb86ed8 ffff88001cb51820 ffff88001f7c3b68
[   21.828286]  ffffffff9efb8f05 ffff88001cb86f68 ffff88001cb86f68 ffff88001f7c3b80
[   21.829416] Call Trace:
[   21.829781]  [<ffffffff9efb5abe>] dump_stack+0xb6/0x118
[   21.830527]  [<ffffffff9efb8f05>] kobject_init+0xa5/0xb0
[   21.831282]  [<ffffffff9f57b1fd>] device_initialize+0x2d/0xf0
[   21.832097]  [<ffffffff9f57bf2a>] device_register+0x1a/0x30
[   21.832888]  [<ffffffff9f732626>] usb_add_gadget_udc_release+0xc6/0x370
[   21.833813]  [<ffffffff9f732994>] usb_add_gadget_udc+0x24/0x30
[   21.847657]  [<ffffffff9f7361d1>] dummy_udc_probe+0x1e1/0x240
[   21.848476]  [<ffffffff9f735ff0>] ? dummy_free_request+0xc0/0xc0
[   21.849348]  [<ffffffff9f582c1e>] platform_drv_probe+0x4e/0xd0
[   21.850181]  [<ffffffff9f582bd0>] ? platform_drv_remove+0x60/0x60
[   21.851049]  [<ffffffff9f580eb2>] driver_probe_device+0xd2/0x490
[   21.851907]  [<ffffffff9f581411>] __device_attach_driver+0xb1/0xf0
[   21.852780]  [<ffffffff9f581360>] ? __driver_attach+0xf0/0xf0
[   21.853598]  [<ffffffff9f57eeb2>] bus_for_each_drv+0x92/0xe0
[   21.854405]  [<ffffffff9f580c41>] __device_attach+0xf1/0x170
[   21.855214]  [<ffffffff9f5814bf>] device_initial_probe+0x1f/0x30
[   21.856068]  [<ffffffff9f57f20e>] bus_probe_device+0xde/0xf0
[   21.856867]  [<ffffffff9f57bb6e>] device_add+0x50e/0x780
[   21.857624]  [<ffffffff9f5835d5>] platform_device_add+0xf5/0x2d0
[   21.858477]  [<ffffffffa0a96198>] init+0x328/0x49a
[   21.859175]  [<ffffffffa0a95e70>] ? trace_event_define_fields_udc_log_req+0x25a/0x25a
[   21.873293]  [<ffffffffa0a4041c>] do_one_initcall+0xa5/0x191
[   21.874108]  [<ffffffffa0a4072d>] kernel_init_freeable+0x225/0x2cd
[   21.874995]  [<ffffffff9faffe98>] kernel_init+0x18/0x180
[   21.875755]  [<ffffffff9fb1034f>] ret_from_fork+0x1f/0x40
[   21.876528]  [<ffffffff9faffe80>] ? rest_init+0xd0/0xd0
[   21.877477] ------------[ cut here ]------------
[   21.878158] WARNING: CPU: 0 PID: 1 at lib/kobject.c:597 kobject_get+0xd6/0x100
[   21.879584] kobject: '(null)' (ffff88001cb82a70): is not initialized, yet kobject_get() is being called.
[   21.880940] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc4-00003-gbea5b15 #1
[   21.881997] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[   21.883418]  0000000000000297 ffff88001f7c3a00 ffffffff9efb5abe ffff88001f7c3a50
[   21.884546]  0000000000000000 ffffffffa00f2390 ffffffff9efb8fe6 ffff88001f7c3a40
[   21.885673]  ffffffff9ece04cb 00000255a011c933 ffffffffa00f2390 0000000000000255
[   21.899837] Call Trace:
[   21.900210]  [<ffffffff9efb5abe>] dump_stack+0xb6/0x118
[   21.900969]  [<ffffffff9efb8fe6>] ? kobject_get+0xd6/0x100
[   21.901747]  [<ffffffff9ece04cb>] __warn+0x11b/0x140
[   21.902460]  [<ffffffff9ece0558>] warn_slowpath_fmt+0x68/0x80
[   21.903282]  [<ffffffff9ef40e87>] ? kernfs_put+0x37/0x240
[   21.904054]  [<ffffffff9f57a720>] ? online_show+0x60/0x60
[   21.904818]  [<ffffffff9efb8fe6>] kobject_get+0xd6/0x100
[   21.905581]  [<ffffffff9f57a720>] ? online_show+0x60/0x60
[   21.906355]  [<ffffffff9f57a749>] klist_children_get+0x29/0x40
[   21.907191]  [<ffffffff9fafe9c5>] klist_node_init+0x45/0x50
[   21.907987]  [<ffffffff9fafecfd>] klist_add_tail+0x1d/0x50
[   21.908761]  [<ffffffff9f57bb8a>] device_add+0x52a/0x780
[   21.909526]  [<ffffffff9f57bf32>] device_register+0x22/0x30
[   21.910329]  [<ffffffff9f732626>] usb_add_gadget_udc_release+0xc6/0x370
[   21.911277]  [<ffffffff9f732994>] usb_add_gadget_udc+0x24/0x30
[   21.912117]  [<ffffffff9f7361d1>] dummy_udc_probe+0x1e1/0x240
[   21.912939]  [<ffffffff9f735ff0>] ? dummy_free_request+0xc0/0xc0
[   21.913795]  [<ffffffff9f582c1e>] platform_drv_probe+0x4e/0xd0
[   21.914625]  [<ffffffff9f582bd0>] ? platform_drv_remove+0x60/0x60
[   21.915490]  [<ffffffff9f580eb2>] driver_probe_device+0xd2/0x490
[   21.916351]  [<ffffffff9f581411>] __device_attach_driver+0xb1/0xf0
[   21.917238]  [<ffffffff9f581360>] ? __driver_attach+0xf0/0xf0
[   21.918060]  [<ffffffff9f57eeb2>] bus_for_each_drv+0x92/0xe0
[   21.918870]  [<ffffffff9f580c41>] __device_attach+0xf1/0x170
[   21.919691]  [<ffffffff9f5814bf>] device_initial_probe+0x1f/0x30
[   21.920554]  [<ffffffff9f57f20e>] bus_probe_device+0xde/0xf0
[   21.921368]  [<ffffffff9f57bb6e>] device_add+0x50e/0x780
[   21.922134]  [<ffffffff9f5835d5>] platform_device_add+0xf5/0x2d0
[   21.922990]  [<ffffffffa0a96198>] init+0x328/0x49a
[   21.923674]  [<ffffffffa0a95e70>] ? trace_event_define_fields_udc_log_req+0x25a/0x25a
[   21.924782]  [<ffffffffa0a4041c>] do_one_initcall+0xa5/0x191
[   21.925597]  [<ffffffffa0a4072d>] kernel_init_freeable+0x225/0x2cd
[   21.926483]  [<ffffffff9faffe98>] kernel_init+0x18/0x180
[   21.927243]  [<ffffffff9fb1034f>] ret_from_fork+0x1f/0x40
[   21.928015]  [<ffffffff9faffe80>] ? rest_init+0xd0/0xd0
[   21.929031] ---[ end trace def35186a836ffe3 ]---
[   65.318331] Writes:  Total: 2  Max/Min: 0/0   Fail: 0 

git bisect start v4.9 v4.8 --
git bisect  bad 9fe68cad6e74967b88d0c6aeca7d9cd6b6e91942  # 01:19      7-     11  Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
git bisect  bad 5fa0eb0b4d4780fbd6d8a09850cc4fd539e9fe65  # 01:37      0-      1  Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect  bad d8ea757b25ec82687c497fc90aa83f9bcea24b5b  # 01:50      0-      1  Merge tag 'xtensa-20161005' of git://github.com/jcmvbkbc/linux-xtensa
git bisect  bad e6445f52d9c8b0e6557a45fa7d0e8e088d430a8c  # 02:01      1-      2  Merge tag 'usb-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
git bisect good 1a4a2bc460721bc8f91e4c1294d39b38e5af132f  # 03:16     50+      0  Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 49deffe0b0e4c2030696c7a6fd680bacf4761069  # 03:40     54+      0  Merge tag 'arc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
git bisect good 597f03f9d133e9837d00965016170271d4f87dcf  # 04:19     53+      0  Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect  bad 9929780e86854833e649b39b290b5fe921eb1701  # 04:47      2-      2  Merge tag 'driver-core-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
git bisect good 7a53eea1f7b527fd3b6d7ca992914840981afe99  # 07:37     51+      1  Merge tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
git bisect  bad 775115c06091fcfa1189a50aca488fa596839617  # 07:49      8-      3  drivers/base dmam_declare_coherent_memory leaks
git bisect  bad 426bc8e789f8ac84270b196191904d347586032f  # 08:08      1-      1  base: soc: make it explicitly non-modular
git bisect  bad bea5b158ff0da9c7246ff391f754f5f38e34577a  # 08:30      3-      2  driver core: add test of driver remove calls during probe
git bisect good cebf8fd16900fdfd58c0028617944f808f97fe50  # 11:35    100+      1  driver core: fix race between creating/querying glue dir and its cleanup
# first bad commit: [bea5b158ff0da9c7246ff391f754f5f38e34577a] driver core: add test of driver remove calls during probe
git bisect good cebf8fd16900fdfd58c0028617944f808f97fe50  # 14:28    306+      4  driver core: fix race between creating/querying glue dir and its cleanup
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect  bad bea5b158ff0da9c7246ff391f754f5f38e34577a  # 14:44     13-      7  driver core: add test of driver remove calls during probe
# extra tests on HEAD of linux-devel/devel-spot-201612242150
git bisect  bad 5cc3c0a7bfc339d9960e6c946a678d179a2aa03c  # 14:44      0-     12  0day head guard for 'devel-spot-201612242150'
# extra tests on tree/branch linus/master
git bisect  bad 7c0f6ba682b9c7632072ffbedf8d328c8f3c42ba  # 14:55      3-      4  Replace <asm/uaccess.h> with <linux/uaccess.h> globally
# extra tests on tree/branch linus/master
git bisect  bad 7c0f6ba682b9c7632072ffbedf8d328c8f3c42ba  # 14:55      0-      4  Replace <asm/uaccess.h> with <linux/uaccess.h> globally
# extra tests on tree/branch linux-next/master
git bisect  bad 84ede50b623fb45c4c026c80d0abf8cc5193f041  # 15:12      1-      1  Add linux-next specific files for 20161224


---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/lkp                          Intel Corporation

Download attachment "dmesg-yocto-vp-61:20161225143335:x86_64-randconfig-it0-12242227:4.8.0-rc4-00003-gbea5b15:1.gz" of type "application/gzip" (15455 bytes)

View attachment "config-4.8.0-rc4-00003-gbea5b15" of type "text/plain" (94976 bytes)

Powered by blists - more mailing lists