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Date: Tue, 03 Mar 2020 10:10:32 +0800
From: kernel test robot <lkp@...el.com>
To: Frank Rowand <frank.rowand@...y.com>
Cc: LKP <lkp@...ts.01.org>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Frank Rowand <frowand.list@...il.com>,
Rob Herring <robh@...nel.org>, philip.li@...el.com
Subject: f4056e705b ("of: unittest: add overlay gpio test to catch gpio
.."): WARNING: held lock freed!
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
commit f4056e705b2ef7f123a188f6aee23ade70e7d793
Author: Frank Rowand <frank.rowand@...y.com>
AuthorDate: Thu Feb 20 12:40:20 2020 -0600
Commit: Rob Herring <robh@...nel.org>
CommitDate: Wed Feb 26 10:42:04 2020 -0600
of: unittest: add overlay gpio test to catch gpio hog problem
Geert reports that gpio hog nodes are not properly processed when
the gpio hog node is added via an overlay reply and provides an
RFC patch to fix the problem [1].
Add a unittest that shows the problem. Unittest will report "1 failed"
test before applying Geert's RFC patch and "0 failed" after applying
Geert's RFC patch.
[1] https://lore.kernel.org/linux-devicetree/20191230133852.5890-1-geert+renesas@glider.be/
Signed-off-by: Frank Rowand <frank.rowand@...y.com>
Signed-off-by: Rob Herring <robh@...nel.org>
2f7afc343d of: property: Add device link support for power-domains and hwlocks
f4056e705b of: unittest: add overlay gpio test to catch gpio hog problem
76897807dc dt-bindings: clock: Convert UniPhier clock to json-schema
+---------------------------------------------------+------------+------------+------------+
| | 2f7afc343d | f4056e705b | 76897807dc |
+---------------------------------------------------+------------+------------+------------+
| boot_successes | 32 | 0 | 0 |
| boot_failures | 8 | 13 | 2 |
| BUG:kernel_timeout_in_torture_test_stage | 3 | | |
| WARNING:at_kernel/workqueue.c:#wq_worker_sleeping | 4 | | |
| EIP:wq_worker_sleeping | 4 | | |
| BUG:kernel_hang_in_boot_stage | 1 | | |
| WARNING:held_lock_freed | 0 | 13 | 2 |
| is_freeing_memory#-#,with_a_lock_still_held_there | 0 | 13 | 2 |
| BUG:kernel_NULL_pointer_dereference,address | 0 | 13 | 2 |
| Oops:#[##] | 0 | 13 | 2 |
| EIP:device_links_driver_cleanup | 0 | 13 | 2 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 13 | 2 |
+---------------------------------------------------+------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp@...el.com>
[ 380.048469] ### dt-test ### EXPECT / : GPIO line <<int>> (line-D-input) hogged as input
[ 380.081817] ### dt-test ### EXPECT \ : GPIO line <<int>> (line-C-input) hogged as input
[ 380.095866] ### dt-test ### EXPECT / : GPIO line <<int>> (line-C-input) hogged as input
[ 380.096714] ### dt-test ### FAIL of_unittest_overlay_gpio():2422 unittest_gpio_chip_request() called 0 times (expected 1 time)
[ 380.106856]
[ 380.107033] =========================
[ 380.107392] WARNING: held lock freed!
[ 380.107759] 5.6.0-rc1-00020-gf4056e705b2ef #1 Not tainted
[ 380.108273] -------------------------
[ 380.108632] swapper/0/1 is freeing memory f3dc8200-f3dc83ff, with a lock still held there!
[ 380.109410] f3dc82c8 (&dev->mutex){....}, at: device_release_driver_internal+0x12/0x116
[ 380.110174] 2 locks held by swapper/0/1:
[ 380.110548] #0: 41be5d38 ((of_reconfig_chain).rwsem){++++}, at: __blocking_notifier_call_chain+0x17/0x40
[ 380.111472] #1: f3dc82c8 (&dev->mutex){....}, at: device_release_driver_internal+0x12/0x116
[ 380.112296]
[ 380.112296] stack backtrace:
[ 380.112773] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.6.0-rc1-00020-gf4056e705b2ef #1
[ 380.113569] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 380.114411] Call Trace:
[ 380.114694] ? dump_stack+0x69/0x90
[ 380.115034] ? debug_check_no_locks_freed+0xcf/0xe8
[ 380.115516] ? slab_free_freelist_hook+0x7f/0xec
[ 380.115966] ? kfree+0x22a/0x348
[ 380.116283] ? unittest_gpio_remove+0x23/0x2e
[ 380.116711] ? unittest_gpio_remove+0x23/0x2e
[ 380.117129] ? device_release_driver_internal+0x9d/0x116
[ 380.117642] ? bus_remove_device+0xa1/0xb0
[ 380.118039] ? device_del+0x167/0x2fa
[ 380.118394] ? class_dir_child_ns_type+0xb/0xb
[ 380.118832] ? klist_iter_exit+0x11/0x1a
[ 380.119219] ? platform_device_del+0x17/0x57
[ 380.119638] ? platform_device_unregister+0xa/0x12
[ 380.120109] ? of_platform_device_destroy+0x51/0x55
[ 380.120586] ? of_platform_notify+0xa7/0xcc
[ 380.120992] ? notifier_call_chain+0x2b/0x45
[ 380.121455] ? __blocking_notifier_call_chain+0x2b/0x40
[ 380.121982] ? blocking_notifier_call_chain+0x23/0x27
[ 380.122466] ? of_reconfig_notify+0x14/0x2c
[ 380.122877] ? __of_changeset_entry_notify+0x8d/0xd3
[ 380.123360] ? __of_changeset_revert_notify+0x24/0x41
[ 380.123871] ? of_overlay_remove+0x1a1/0x218
[ 380.124323] ? of_unittest+0x1bf8/0x1fe7
[ 380.124755] ? of_unittest_printf_one+0x11e/0x11e
[ 380.125231] ? do_one_initcall+0x118/0x2cf
[ 380.125647] ? kernel_init_freeable+0x139/0x188
[ 380.126084] ? rest_init+0x11d/0x11d
[ 380.126439] ? kernel_init+0x5/0xcc
[ 380.126813] ? ret_from_fork+0x1e/0x30
[ 380.127392] BUG: kernel NULL pointer dereference, address: 00000000
[ 380.128064] #PF: supervisor read access in kernel mode
[ 380.128562] #PF: error_code(0x0000) - not-present page
[ 380.129075] *pde = 00000000
[ 380.129356] Oops: 0000 [#1] PREEMPT SMP
[ 380.129728] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.6.0-rc1-00020-gf4056e705b2ef #1
[ 380.130480] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 380.143418] EIP: device_links_driver_cleanup+0xcb/0xff
[ 380.143947] Code: 54 24 04 31 c9 b8 c8 01 c7 41 e8 19 aa cf ff 83 7b 18 04 5a 75 0d f6 43 1c 10 74 07 89 d8 e8 ae f5 ff ff c7 43 18 00 00 00 00 <8b> 47 04 89 fb e9 42 ff ff ff 8d 9e e4 00 00 00 89 d8 e8 31 f0 ff
[ 380.145732] EAX: f3dc82e0 EBX: 6b6b6b67 ECX: 00000000 EDX: 6b6b6b6b
[ 380.146331] ESI: f3dc820c EDI: fffffffc EBP: 00000000 ESP: f5155d20
[ 380.146981] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010246
[ 380.147633] CR0: 80050033 CR2: 00000000 CR3: 01d8e000 CR4: 001406d0
[ 380.148232] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 380.148832] DR6: fffe0ff0 DR7: 00000400
[ 380.149203] Call Trace:
[ 380.149458] ? device_release_driver_internal+0xa4/0x116
[ 380.150005] ? bus_remove_device+0xa1/0xb0
[ 380.150419] ? device_del+0x167/0x2fa
[ 380.150815] ? class_dir_child_ns_type+0xb/0xb
[ 380.151306] ? klist_iter_exit+0x11/0x1a
[ 380.151736] ? platform_device_del+0x17/0x57
[ 380.152149] ? platform_device_unregister+0xa/0x12
[ 380.152616] ? of_platform_device_destroy+0x51/0x55
[ 380.153089] ? of_platform_notify+0xa7/0xcc
[ 380.153501] ? notifier_call_chain+0x2b/0x45
[ 380.153939] ? __blocking_notifier_call_chain+0x2b/0x40
[ 380.154470] ? blocking_notifier_call_chain+0x23/0x27
[ 380.154998] ? of_reconfig_notify+0x14/0x2c
[ 380.155437] ? __of_changeset_entry_notify+0x8d/0xd3
[ 380.155951] ? __of_changeset_revert_notify+0x24/0x41
[ 380.156439] ? of_overlay_remove+0x1a1/0x218
[ 380.156863] ? of_unittest+0x1bf8/0x1fe7
[ 380.157269] ? of_unittest_printf_one+0x11e/0x11e
[ 380.157730] ? do_one_initcall+0x118/0x2cf
[ 380.158153] ? kernel_init_freeable+0x139/0x188
[ 380.158609] ? rest_init+0x11d/0x11d
[ 380.158980] ? kernel_init+0x5/0xcc
[ 380.159331] ? ret_from_fork+0x1e/0x30
[ 380.159723] Modules linked in:
[ 380.160025] CR2: 0000000000000000
[ 380.160354] ---[ end trace fa157650c0d14f0b ]---
[ 380.160804] EIP: device_links_driver_cleanup+0xcb/0xff
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 65e5f40b639d0788611a2e18ae27cadbce7eef70 f8788d86ab28f61f7b46eb6be375f8a726783636 --
git bisect bad 4e979fd94657ebcb12ceaeb74021db2ae0c44e99 # 17:02 B 0 8 27 3 Merge 'stblinux/defconfig/fixes' into devel-hourly-2020030110
git bisect bad 5c333c40ae2ad15257877a5b4c85f2001888d8bd # 17:02 B 0 9 27 2 Merge 'georgi.djakov/icc-next' into devel-hourly-2020030110
git bisect good a5e9a9f2b30c6b17d0e4c5368e21354f1c25baea # 17:37 G 11 0 1 7 Merge 'linux-review/Gustavo-A-R-Silva/net-marvell-Replace-zero-length-array-with-flexible-array-member/20200225-081226' into devel-hourly-2020030110
git bisect good 3761a240da8cfc7a2515c537e7078756a5d490aa # 18:14 G 11 0 1 2 Merge 'linux-review/Athira-Rajeev/powerpc-perf-Use-SIER_USER_MASK-while-updating-SPRN_SIER-for-EBB-events/20200229-053024' into devel-hourly-2020030110
git bisect bad 46761b71e3f0897a438a914779c022bedf38aacd # 18:14 B 1 7 0 3 Merge 'linux-review/Sergiu-Cuciurean/net-wireless-marvell-libertas-Use-new-structure-for-SPI-transfer-delays/20200228-162311' into devel-hourly-2020030110
git bisect good a6b0da9ee130ff186536d2852ee17a001476e8c8 # 18:20 G 12 0 1 2 Merge 'linux-review/Gustavo-A-R-Silva/ipv6-Replace-zero-length-array-with-flexible-array-member/20200229-073152' into devel-hourly-2020030110
git bisect good fef5536de043ba7b4798f37bf03d93ac3fb3b849 # 18:38 G 12 0 0 1 Merge 'linux-review/Balbir-Singh/Add-support-for-block-disk-resize-notification/20200226-050213' into devel-hourly-2020030110
git bisect good 1fa9848c93094a60d230f9fcc37f5e8b7c903457 # 19:11 G 12 0 1 8 Merge 'linux-review/Jiri-Pirko/mlxsw-pci-Wait-longer-before-accessing-the-device-after-reset/20200229-023848' into devel-hourly-2020030110
git bisect bad 7291198059b3c748b855973e643cca9844895e00 # 19:11 B 1 9 0 2 Merge 'linux-review/George-Hilliard/Support-the-Allwinner-F1C100s-USB-stack/20200229-003545' into devel-hourly-2020030110
git bisect bad 4abfe6f04d93e4aac202007486266bd1a904cc43 # 19:11 B 1 10 0 0 dt-bindings: i2c: Convert UniPhier FI2C controller to json-schema
git bisect good faf8e30acb219849725aa75302d36e0ffdb6a258 # 19:29 G 12 0 0 1 dt-bindings: arm: Add kryo260 compatible
git bisect good 8acbbddcf9913149ef47b20f487289da02c4a291 # 20:02 G 12 0 2 5 dt-bindings: ata: rcar-sata: Convert to json-schema
git bisect bad 0ac1743979408a4999f32b777ce71f40fac040fa # 21:42 B 0 3 21 0 of: unittest: annotate warnings triggered by unittest
git bisect bad f4056e705b2ef7f123a188f6aee23ade70e7d793 # 22:48 B 0 1 17 0 of: unittest: add overlay gpio test to catch gpio hog problem
git bisect good 2f7afc343d49eea0bf88ea5fc8cb3afc392356c3 # 02:09 G 12 0 1 1 of: property: Add device link support for power-domains and hwlocks
# first bad commit: [f4056e705b2ef7f123a188f6aee23ade70e7d793] of: unittest: add overlay gpio test to catch gpio hog problem
git bisect good 2f7afc343d49eea0bf88ea5fc8cb3afc392356c3 # 02:56 G 36 0 5 7 of: property: Add device link support for power-domains and hwlocks
# extra tests with debug options
# extra tests on head commit of robh/for-next
git bisect bad 76897807dc79747161429c984528cf8c6670b328 # 10:08 B 0 2 18 0 dt-bindings: clock: Convert UniPhier clock to json-schema
# bad: [76897807dc79747161429c984528cf8c6670b328] dt-bindings: clock: Convert UniPhier clock to json-schema
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/lkp@lists.01.org
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