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Date: Sun, 26 Feb 2017 17:56:26 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Felipe Balbi <balbi@...com>
Cc: Jean Delvare <khali@...ux-fr.org>, linux-i2c@...r.kernel.org,
linux-usb@...r.kernel.org, Rob Herring <robh@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-kernel@...r.kernel.org, LKP <lkp@...org>
Subject: [usb] bea5b158ff WARNING: CPU: 0 PID: 25 at
drivers/usb/core/urb.c:338 usb_submit_urb
Greetings,
This debug patch possibly discloses some USB/I2C bugs. Since the USB
warning shows up earlier in dmesg, it might also be the root cause of
the I2C bug. The attached reproduce-* script may help debug them.
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 driver core: fix race between creating/querying glue dir and its cleanup
bea5b158ff driver core: add test of driver remove calls during probe
+---------------------------------------------------+------------+------------+
| | cebf8fd169 | bea5b158ff |
+---------------------------------------------------+------------+------------+
| boot_successes | 215 | 0 |
| boot_failures | 0 | 55 |
| calltrace:init | 0 | 55 |
| WARNING:at_drivers/usb/core/urb.c:#usb_submit_urb | 0 | 30 |
| calltrace:hub_init_func3 | 0 | 13 |
| BUG:unable_to_handle_kernel | 0 | 55 |
| Oops | 0 | 55 |
| EIP_is_at_i2c_do_del_adapter | 0 | 55 |
| calltrace:of_unittest | 0 | 55 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 55 |
| calltrace:pm_runtime_work | 0 | 16 |
| calltrace:hub_init_func2 | 0 | 1 |
+---------------------------------------------------+------------+------------+
[ 9.260542] hub 1-0:1.0: 1 port detected
[ 9.261049] hub 1-0:1.0: USB hub found
[ 9.261458] hub 1-0:1.0: 1 port detected
[ 9.262388] kobject (cf9188bc): tried to init an initialized object, something is seriously wrong.
[ 9.263589] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc4-00003-gbea5b15 #2
[ 9.264595] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 9.265922] 00000000 00000000 c0047db4 c11aec39 cf9188bc c1c1ba9c c0047dcc c11b0616
[ 9.267073] c1ab0c68 cf9188bc cf9188b4 cf918868 c0047dd8 c13090ec cf9188b4 c0047de4
[ 9.268230] c130a49e ce6a8000 c0047e04 c1402216 ce69300c 00200246 cf9188b4 cf918000
[ 9.269388] Call Trace:
[ 9.269720] [<c11aec39>] dump_stack+0x58/0x72
[ 9.270312] [<c11b0616>] kobject_init+0x27/0x71
[ 9.270929] [<c13090ec>] device_initialize+0x1b/0xbd
[ 9.271599] [<c130a49e>] device_register+0xb/0x15
[ 9.272236] [<c1402216>] usb_add_gadget_udc_release+0x85/0x215
[ 9.273036] [<c1402403>] usb_add_gadget_udc+0xa/0xc
[ 9.273700] [<c1403f37>] dummy_udc_probe+0x130/0x168
[ 9.274377] [<c130cf05>] platform_drv_probe+0x44/0x80
[ 9.275047] [<c130bef3>] driver_probe_device+0xfe/0x297
[ 9.275748] [<c130c17a>] __device_attach_driver+0x65/0x71
[ 9.276481] [<c130add0>] bus_for_each_drv+0x3a/0x67
[ 9.277130] [<c130bd02>] __device_attach+0x86/0xdb
[ 9.277778] [<c130c115>] ? driver_allows_async_probing+0xc/0xc
[ 9.278561] [<c130c28a>] device_initial_probe+0xd/0xf
[ 9.279235] [<c130af4f>] bus_probe_device+0x25/0x67
[ 9.279895] [<c130a33d>] device_add+0x341/0x497
[ 9.280517] [<c130930f>] ? dev_set_name+0x14/0x16
[ 9.281154] [<c130d4c5>] platform_device_add+0x117/0x161
[ 9.281879] [<c1d18945>] init+0x20d/0x2f4
[ 9.282431] [<c1d18738>] ? usb_udc_init+0x3f/0x3f
[ 9.283075] [<c1cdeba3>] do_one_initcall+0x7e/0xfc
[ 9.283725] [<c1056209>] ? parse_args+0x19b/0x26f
[ 9.284362] [<c1cded68>] ? kernel_init_freeable+0x147/0x1eb
[ 9.285100] [<c1cded84>] kernel_init_freeable+0x163/0x1eb
[ 9.285826] [<c170d049>] kernel_init+0x8/0xd0
[ 9.286417] [<c17122e2>] ret_from_kernel_thread+0xe/0x24
[ 9.287118] [<c170d041>] ? rest_init+0xa5/0xa5
[ 9.288532] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
[ 9.290663] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 9.291372] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 9.293351] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 9.294031] serio: i8042 AUX port at 0x60,0x64 irq 12
The attached dmesg has more follow up errors.
git bisect start v4.9 v4.8 --
git bisect bad 9fe68cad6e74967b88d0c6aeca7d9cd6b6e91942 # 00:43 18- 30 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
git bisect bad d8ea757b25ec82687c497fc90aa83f9bcea24b5b # 01:11 4- 6 Merge tag 'xtensa-20161005' of git://github.com/jcmvbkbc/linux-xtensa
git bisect bad e6445f52d9c8b0e6557a45fa7d0e8e088d430a8c # 01:17 6- 11 Merge tag 'usb-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
git bisect good 1a4a2bc460721bc8f91e4c1294d39b38e5af132f # 01:32 52+ 0 Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 3ef0a61a467639cf7def299309cd9ea524c3e1c1 # 01:50 52+ 0 Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad e6dce825fba05f447bd22c865e27233182ab3d79 # 02:02 17- 27 Merge tag 'tty-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
git bisect good 597f03f9d133e9837d00965016170271d4f87dcf # 02:34 55+ 0 Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 7a53eea1f7b527fd3b6d7ca992914840981afe99 # 02:55 51+ 0 Merge tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
git bisect bad 9929780e86854833e649b39b290b5fe921eb1701 # 03:03 1- 3 Merge tag 'driver-core-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
git bisect bad 2c507e464f791327c94d17a0137f00b4717744fc # 03:15 2- 4 device core: Remove deprecated create_singlethread_workqueue
git bisect bad 03aca7b260ea2aadf92596d2f57160e4aee8ffb0 # 03:26 0- 7 attribute_container: Fix typo
git bisect bad bea5b158ff0da9c7246ff391f754f5f38e34577a # 03:41 0- 1 driver core: add test of driver remove calls during probe
git bisect good 24ef5f360f22e4408cb49d75755d27d5a21820f7 # 03:57 51+ 0 debugfs: remove extra debugfs_create_file_unsafe() declaration
git bisect good cebf8fd16900fdfd58c0028617944f808f97fe50 # 08:29 55+ 0 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 # 11:46 160+ 0 driver core: fix race between creating/querying glue dir and its cleanup
# extra tests with CONFIG_DEBUG_INFO_REDUCED
# extra tests on HEAD of linux-devel/devel-spot-201702252217
git bisect bad b2c7455f59b51a4477df19cd36f18ef4734a860e # 11:51 0- 13 0day head guard for 'devel-spot-201702252217'
# extra tests on tree/branch linus/master
git bisect bad c4f3f22eddc982d247ffe2a6690c3e4a5c46dd09 # 12:01 2- 1 Merge tag 'linux-kselftest-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
# extra tests on tree/branch linux-next/master
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
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