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Date: Sun, 1 Dec 2019 23:00:15 +0800
From: kernel test robot <lkp@...el.com>
To: Saravana Kannan <saravanak@...gle.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Frank Rowand <frowand.list@...il.com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
LKP <lkp@...ts.01.org>
Subject: 5e6669387e ("of/platform: Pause/resume sync state during init .."):
[ 3.192726] WARNING: CPU: 1 PID: 1 at drivers/base/core.c:688
device_links_supplier_sync_state_resume
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 5e6669387e2287f25f09fd0abd279dae104cfa7e
Author: Saravana Kannan <saravanak@...gle.com>
AuthorDate: Wed Sep 4 14:11:24 2019 -0700
Commit: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CommitDate: Fri Oct 4 17:30:19 2019 +0200
of/platform: Pause/resume sync state during init and of_platform_populate()
When all the top level devices are populated from DT during kernel
init, the supplier devices could be added and probed before the
consumer devices are added and linked to the suppliers. To avoid the
sync_state() callback from being called prematurely, pause the
sync_state() callbacks before populating the devices and resume them
at late_initcall_sync().
Similarly, when children devices are populated from a module using
of_platform_populate(), there could be supplier-consumer dependencies
between the children devices that are populated. To avoid the same
problem with sync_state() being called prematurely, pause and resume
sync_state() callbacks across of_platform_populate().
Signed-off-by: Saravana Kannan <saravanak@...gle.com>
Link: https://lore.kernel.org/r/20190904211126.47518-6-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
fc5a251d0f driver core: Add sync_state driver/bus callback
5e6669387e of/platform: Pause/resume sync state during init and of_platform_populate()
81b6b96475 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux; tag 'dma-mapping-5.5' of git://git.infradead.org/users/hch/dma-mapping
+-------------------------------------------------------------------------+------------+------------+------------+
| | fc5a251d0f | 5e6669387e | 81b6b96475 |
+-------------------------------------------------------------------------+------------+------------+------------+
| boot_successes | 30 | 0 | 0 |
| boot_failures | 1 | 11 | 22 |
| Oops:#[##] | 1 | | |
| EIP:unmap_vmas | 1 | | |
| PANIC:double_fault | 1 | | |
| Kernel_panic-not_syncing:Fatal_exception | 1 | | |
| WARNING:at_drivers/base/core.c:#device_links_supplier_sync_state_resume | 0 | 11 | 22 |
| EIP:device_links_supplier_sync_state_resume | 0 | 11 | 22 |
+-------------------------------------------------------------------------+------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp@...el.com>
[ 3.186107] OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found -1
[ 3.188595] platform testcase-data:testcase-device2: IRQ index 0 not found
[ 3.191047] ### dt-test ### end of unittest - 199 passed, 0 failed
[ 3.191932] ------------[ cut here ]------------
[ 3.192571] Unmatched sync_state pause/resume!
[ 3.192726] WARNING: CPU: 1 PID: 1 at drivers/base/core.c:688 device_links_supplier_sync_state_resume+0x27/0xc0
[ 3.195084] Modules linked in:
[ 3.195494] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G T 5.4.0-rc1-00005-g5e6669387e228 #1
[ 3.196674] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 3.197693] EIP: device_links_supplier_sync_state_resume+0x27/0xc0
[ 3.198680] Code: 00 00 00 3e 8d 74 26 00 57 56 31 d2 53 b8 a0 d0 d9 c1 e8 6c b6 38 00 a1 e4 d0 d9 c1 85 c0 75 13 68 84 ba c4 c1 e8 29 30 b1 ff <0f> 0b 58 eb 7f 8d 74 26 00 83 e8 01 85 c0 a3 e4 d0 d9 c1 75 6f 8b
[ 3.201560] EAX: 00000022 EBX: 00000000 ECX: 00000000 EDX: 00000000
[ 3.202466] ESI: 000001ab EDI: c02c7f80 EBP: c1e87d27 ESP: c02c7f20
[ 3.203301] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010282
[ 3.204258] CR0: 80050033 CR2: bfa1bf98 CR3: 01f28000 CR4: 00140690
[ 3.205022] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 3.205919] DR6: fffe0ff0 DR7: 00000400
[ 3.206529] Call Trace:
[ 3.207011] ? of_platform_sync_state_init+0x13/0x16
[ 3.207719] ? do_one_initcall+0xda/0x260
[ 3.208247] ? kernel_init_freeable+0x110/0x197
[ 3.208906] ? rest_init+0x120/0x120
[ 3.209369] ? kernel_init+0xa/0x100
[ 3.209775] ? ret_from_fork+0x19/0x24
[ 3.210283] ---[ end trace 81d0f2d2ee65199b ]---
[ 3.210955] ALSA device list:
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 1251b72273bfd2d17832055d93713797f027bd7e 219d54332a09e8d8741c1e1982f5eae56099de85 --
git bisect bad 5850da4ca99731a66a1b54fcd4e937f2ce09d422 # 07:14 B 0 3 19 0 Merge 'frank-w-bpi-r2-4.14/5.4-r64-pcie' into devel-catchup-201911300217
git bisect bad a9ff9d736bfbcad09085e7b370eff28200691aae # 07:38 B 0 3 19 0 Merge 'linux-review/Jaroslav-Kysela/ALSA-hda-fixup-for-the-bass-speaker-on-Lenovo-Carbon-X1-7th-gen/20191130-013305' into devel-catchup-201911300217
git bisect good ff7d78108fd9afb5e90dcdbf84c1857702452473 # 08:37 G 10 0 0 0 0day base guard for 'devel-catchup-201911300217'
git bisect bad 95a324fbf220358a41e082098d16489e7efabb05 # 08:59 B 0 2 18 0 Merge 'linux-review/Vincenzo-Frascino/mips-Fix-gettimeofday-in-the-vdso-library/20191130-011805' into devel-catchup-201911300217
git bisect good 361b0d286afea0d867537536977a695b5557d133 # 09:55 G 11 0 0 0 Merge tag 'devprop-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
git bisect good 0dd09bc02c1bad55e92306ca83b38b3cf48b9f40 # 11:06 G 11 0 1 1 Merge tag 'staging-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
git bisect good 3275a71e76fac5bc276f0d60e027b18c2e8d7a5b # 12:07 G 11 0 0 0 Merge tag 'drm-next-5.5-2019-10-09' of git://people.freedesktop.org/~agd5f/linux into drm-next
git bisect good 2ef4144d1ea8b181d377d0783c43032cb44889f7 # 15:08 G 11 0 0 0 Merge tag 'drm-intel-next-2019-11-01-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
git bisect good acc61b8929365e63a3e8c8c8913177795aa45594 # 15:34 G 11 0 0 1 Merge tag 'drm-next-5.5-2019-11-22' of git://people.freedesktop.org/~agd5f/linux into drm-next
git bisect bad 95f1fa9e3418d50ce099e67280b5497b9c93843b # 16:06 B 0 2 19 1 Merge tag 'trace-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
git bisect bad 80eb5fea3c14fb171facb5242a1555b3aafea4d0 # 16:31 B 0 1 17 0 Merge tag 'powerpc-spectre-rsb' of powerpc-CVE-2019-18660.bundle
git bisect bad 0c40c1be2512abc99ea27df83f882dd61b5437bc # 17:30 B 0 11 27 0 mmc: dw_mmc: Fix debugfs on 64-bit platforms
git bisect bad f5cb0a7e64f41b6f1c5cacc64a476962f5e97f91 # 18:00 B 0 2 18 0 debugfs: remove return value of debugfs_create_x32()
git bisect bad c31e73121f4c1ec45a3e523ac6ce3ce6dafdcec1 # 18:35 B 0 1 17 0 base: soc: Handle custom soc information sysfs entries
git bisect good fc5a251d0fd7ca9038bab78a8c97932c8c6ca23b # 19:07 G 11 0 0 0 driver core: Add sync_state driver/bus callback
git bisect bad d4387cd117414ba80230f27a514be5ca4a09cfcc # 19:34 B 0 9 25 0 of: property: Create device links for all child-supplier depencencies
git bisect bad 5e6669387e2287f25f09fd0abd279dae104cfa7e # 19:53 B 0 11 27 0 of/platform: Pause/resume sync state during init and of_platform_populate()
# first bad commit: [5e6669387e2287f25f09fd0abd279dae104cfa7e] of/platform: Pause/resume sync state during init and of_platform_populate()
git bisect good fc5a251d0fd7ca9038bab78a8c97932c8c6ca23b # 20:17 G 31 0 1 1 driver core: Add sync_state driver/bus callback
# extra tests with debug options
git bisect good 5e6669387e2287f25f09fd0abd279dae104cfa7e # 20:29 G 10 0 0 0 of/platform: Pause/resume sync state during init and of_platform_populate()
# extra tests on head commit of linus/master
git bisect bad 81b6b96475ac7a4ebfceae9f16fb3758327adbfe # 20:47 B 0 22 61 0 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux; tag 'dma-mapping-5.5' of git://git.infradead.org/users/hch/dma-mapping
# bad: [81b6b96475ac7a4ebfceae9f16fb3758327adbfe] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux; tag 'dma-mapping-5.5' of git://git.infradead.org/users/hch/dma-mapping
# extra tests on revert first bad commit
git bisect good c1a48460693b4421be494a524e06e57bdb9fc9bf # 21:19 G 10 0 0 0 Revert "of/platform: Pause/resume sync state during init and of_platform_populate()"
# good: [c1a48460693b4421be494a524e06e57bdb9fc9bf] Revert "of/platform: Pause/resume sync state during init and of_platform_populate()"
# extra tests on linus/master
# duplicated: [81b6b96475ac7a4ebfceae9f16fb3758327adbfe] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux; tag 'dma-mapping-5.5' of git://git.infradead.org/users/hch/dma-mapping
# extra tests on linux-next/master
# 119: [419593dad8439007452bb6f267861863b572c520] Add linux-next specific files for 20191129
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation
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