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Date: Thu, 22 Dec 2016 11:42:10 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Rob Herring <robh@...nel.org>, linux-ide@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-kernel@...r.kernel.org, LKP <lkp@...org>
Subject: [ata] bea5b158ff WARNING: CPU: 0 PID: 1 at
drivers/ata/libata-core.c:6482 ata_port_detach
Greetings,
Here is an libata 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 | e575a3b48c |
+-------------------------------------------------------+------------+------------+------------+
| boot_successes | 63 | 0 | 0 |
| boot_failures | 0 | 22 | 13 |
| WARNING:at_drivers/ata/libata-core.c:#ata_port_detach | 0 | 21 | 13 |
| calltrace:piix_init | 0 | 21 | |
| calltrace:async_run_entry_fn | 0 | 22 | |
| WARNING:at_include/linux/kref.h:#kobject_get | 0 | 22 | 13 |
| WARNING:at_fs/sysfs/group.c:#sysfs_remove_group | 0 | 16 | 9 |
| general_protection_fault:#[##]DEBUG_PAGEALLOC | 0 | 21 | 13 |
| RIP:kstrdup | 0 | 17 | |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 21 | 13 |
| RIP:vsnprintf | 0 | 4 | |
| calltrace:i8042_init | 0 | 1 | |
| calltrace:serio_handle_event | 0 | 1 | |
| BUG:unable_to_handle_kernel | 0 | 0 | 2 |
| Oops | 0 | 0 | 2 |
+-------------------------------------------------------+------------+------------+------------+
[ 10.651919] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc208 irq 15
[ 10.816182] ata2.01: NODEV after polling detection
[ 10.817008] ------------[ cut here ]------------
[ 10.818022] WARNING: CPU: 0 PID: 1 at drivers/ata/libata-core.c:6482 ata_port_detach+0x87/0x127
[ 10.819174] Modules linked in:
[ 10.819531] CPU: 0 PID: 1 Comm: swapper Not tainted 4.8.0-rc4-00003-gbea5b15 #1
[ 10.820322] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 10.821417] ffffffff820ccb54 ffff88001ccdfb78 ffffffff813e8456 ffff88001ccdfbc8
[ 10.822264] ffffffff810a2873 0000000000000000 000000091e3ea5c0 ffffffff810cf5c4
[ 10.823128] ffff880015c20000 0000000000000001 ffff88001cd11000 ffff88001cd113a0
[ 10.823977] Call Trace:
[ 10.824251] [<ffffffff813e8456>] dump_stack+0x19/0x1b
[ 10.824811] [<ffffffff810a2873>] __warn+0xd5/0xf3
[ 10.825330] [<ffffffff810cf5c4>] ? woken_wake_function+0x13/0x13
[ 10.825992] [<ffffffff810a28ae>] warn_slowpath_null+0x1d/0x1f
[ 10.826628] [<ffffffff81732a2d>] ata_port_detach+0x87/0x127
[ 10.827240] [<ffffffff81732af2>] ata_host_detach+0x25/0x31
[ 10.827848] [<ffffffff81732b2c>] ata_pci_remove_one+0x15/0x17
[ 10.828476] [<ffffffff8174ba90>] piix_remove_one+0x38/0x3c
[ 10.829075] [<ffffffff8144528f>] pci_device_remove+0x4e/0xf7
[ 10.829700] [<ffffffff815f732f>] really_probe+0x170/0x2fa
[ 10.830294] [<ffffffff810d81ae>] ? trace_hardirqs_on+0xd/0xf
[ 10.830920] [<ffffffff815f7502>] driver_probe_device+0x49/0x77
[ 10.831561] [<ffffffff815f75a6>] __driver_attach+0x76/0x9c
[ 10.832161] [<ffffffff815f7530>] ? driver_probe_device+0x77/0x77
[ 10.832819] [<ffffffff815f7530>] ? driver_probe_device+0x77/0x77
[ 10.833477] [<ffffffff815f56a8>] bus_for_each_dev+0x5b/0x99
[ 10.834085] [<ffffffff815f6f02>] driver_attach+0x1e/0x20
[ 10.834672] [<ffffffff815f67f4>] bus_add_driver+0xf0/0x1e8
[ 10.835275] [<ffffffff815f7e98>] driver_register+0xad/0xe5
[ 10.835894] [<ffffffff814454f7>] __pci_register_driver+0x68/0x6f
[ 10.836557] [<ffffffff8263893f>] ? nvme_core_init+0x88/0x88
[ 10.837167] [<ffffffff82639647>] ? inic_pci_driver_init+0x1b/0x1b
[ 10.837833] [<ffffffff82639660>] piix_init+0x19/0x29
[ 10.838380] [<ffffffff810003e4>] do_one_initcall+0x8b/0x150
[ 10.838994] [<ffffffff825ed96c>] do_basic_setup+0xa2/0xc5
[ 10.839587] [<ffffffff825eda7b>] ? kernel_init_freeable+0xec/0xec
[ 10.840253] [<ffffffff825eda06>] kernel_init_freeable+0x77/0xec
[ 10.840906] [<ffffffff81a074a1>] kernel_init+0xe/0xf3
[ 10.841465] [<ffffffff81a0eb6f>] ret_from_fork+0x1f/0x40
[ 10.842051] [<ffffffff81a07493>] ? rest_init+0x13a/0x13a
[ 10.842641] ---[ end trace b67e72a9ee09950c ]---
[ 10.843181] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100
git bisect start v4.9 v4.8 --
git bisect bad 9fe68cad6e74967b88d0c6aeca7d9cd6b6e91942 # 00:16 0- 22 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
git bisect bad 5fa0eb0b4d4780fbd6d8a09850cc4fd539e9fe65 # 00:26 0- 22 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 597f03f9d133e9837d00965016170271d4f87dcf # 00:50 22+ 0 Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 0fb3ca447ddabcfb8dc7e0f719955e500b170cbd # 01:01 0- 22 Merge tag 'pstore-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
git bisect bad 3ddf40e8c31964b744ff10abb48c8e36a83ec6e7 # 01:11 0- 20 mm: filemap: fix mapping->nrpages double accounting in fuse
git bisect bad 58e4411b2d05bea9992fd8ee510f696b73d314c1 # 01:23 0- 21 Merge tag 'spi-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
git bisect bad 21f54ddae449f4bdd9f1498124901d67202243d9 # 01:32 0- 22 Using BUG_ON() as an assert() is _never_ acceptable
git bisect bad 9929780e86854833e649b39b290b5fe921eb1701 # 01:47 0- 19 Merge tag 'driver-core-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
git bisect good 7a53eea1f7b527fd3b6d7ca992914840981afe99 # 01:59 22+ 0 Merge tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
git bisect bad 775115c06091fcfa1189a50aca488fa596839617 # 02:16 0- 20 drivers/base dmam_declare_coherent_memory leaks
git bisect bad 426bc8e789f8ac84270b196191904d347586032f # 02:29 0- 22 base: soc: make it explicitly non-modular
git bisect bad bea5b158ff0da9c7246ff391f754f5f38e34577a # 02:42 0- 21 driver core: add test of driver remove calls during probe
git bisect good cebf8fd16900fdfd58c0028617944f808f97fe50 # 02:53 22+ 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 # 02:56 63+ 0 driver core: fix race between creating/querying glue dir and its cleanup
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad bea5b158ff0da9c7246ff391f754f5f38e34577a # 03:09 0- 43 driver core: add test of driver remove calls during probe
# extra tests on HEAD of linux-devel/devel-spot-201612161945
git bisect bad e575a3b48c3717463fd4fd670b409f1d17de6fa3 # 03:09 0- 13 0day head guard for 'devel-spot-201612161945'
# extra tests on tree/branch linus/master
git bisect bad bd9999cd6a5eb899504ce14c1f70c5479143bbbc # 03:27 0- 57 Merge tag 'media/v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
# extra tests on tree/branch linus/master
git bisect bad bd9999cd6a5eb899504ce14c1f70c5479143bbbc # 03:28 0- 66 Merge tag 'media/v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
# extra tests on tree/branch linux-next/master
git bisect bad bf579a3afa46c74b7e89930974ba119d4c76bab2 # 03:39 0- 33 Add linux-next specific files for 20161216
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
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