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Date:   Sat, 21 Jul 2018 10:14:33 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Paul Blakey <paulb@...lanox.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        LKP <lkp@...org>
Subject: [lkp-robot] [confidence: ] 499ac3b60f [    9.040615] WARNING: CPU: 0
 PID: 1 at lib/debugobjects.c:328 __debug_object_init


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 499ac3b60f657dae82055fc81c7b01e6242ac9bc
Author:     Paul Blakey <paulb@...lanox.com>
AuthorDate: Sun Mar 4 17:29:49 2018 +0200
Commit:     David S. Miller <davem@...emloft.net>
CommitDate: Wed Mar 7 10:44:03 2018 -0500

    test_rhashtable: add test case for rhltable with duplicate objects
    
    Tries to insert duplicates in the middle of bucket's chain:
    bucket 1:  [[val 21 (tid=1)]] -> [[ val 1 (tid=2),  val 1 (tid=0) ]]
    
    Reuses tid to distinguish the elements insertion order.
    
    Signed-off-by: Paul Blakey <paulb@...lanox.com>
    Acked-by: Herbert Xu <herbert@...dor.apana.org.au>
    Signed-off-by: David S. Miller <davem@...emloft.net>

d3dcf8eb61  rhashtable: Fix rhlist duplicates insertion
499ac3b60f  test_rhashtable: add test case for rhltable with duplicate objects
28c20cc73b  Merge tag 'drm-fixes-2018-07-20' of git://anongit.freedesktop.org/drm/drm
89cf553533  Add linux-next specific files for 20180720
+-----------------------------------------------------+------------+------------+------------+---------------+
|                                                     | d3dcf8eb61 | 499ac3b60f | 28c20cc73b | next-20180720 |
+-----------------------------------------------------+------------+------------+------------+---------------+
| boot_successes                                      | 0          | 0          | 0          | 0             |
| boot_failures                                       | 78         | 19         | 27         | 51            |
| WARNING:at_arch/x86/mm/dump_pagetables.c:#note_page | 78         | 19         | 25         | 38            |
| EIP:note_page                                       | 78         | 19         | 25         | 38            |
| WARNING:at_lib/debugobjects.c:#__debug_object_init  | 0          | 19         | 27         | 51            |
| EIP:__debug_object_init                             | 0          | 19         | 27         | 51            |
| WARNING:at_mm/page_alloc.c:#__alloc_pages_nodemask  | 0          | 0          | 27         | 51            |
| EIP:__alloc_pages_nodemask                          | 0          | 0          | 27         | 51            |
| Mem-Info                                            | 0          | 0          | 27         | 51            |
+-----------------------------------------------------+------------+------------+------------+---------------+

[    8.895900]   Duration of test: 593133413 ns
[    9.027319] test if its possible to exceed max_size 8192: no, ok
[    9.037926] Average test time: 554321718
[    9.038814] test inserting duplicates
[    9.039642] ODEBUG: object is on stack, but not annotated
[    9.040615] WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:328 __debug_object_init+0x228/0x3e0
[    9.040615] Modules linked in:
[    9.040615] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.16.0-rc4-00130-g499ac3b #2
[    9.040615] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[    9.047343] EIP: __debug_object_init+0x228/0x3e0
[    9.047343] EFLAGS: 00210092 CPU: 0
[    9.047343] EAX: c16719a8 EBX: c0080e28 ECX: c103eae0 EDX: 00000016
[    9.047343] ESI: c0023e10 EDI: c1fd5238 EBP: 00074b14 ESP: c0023d60
[    9.047343]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[    9.047343] CR0: 80050033 CR2: 00000000 CR3: 01923000 CR4: 000006b0
[    9.047343] Call Trace:
[    9.047343]  ? bucket_table_alloc+0x70/0x170
[    9.047343]  ? kstrtos8_from_user+0xb0/0xb0
[    9.047343]  ? rhashtable_init+0x1a2/0x2a0
[    9.047343]  ? rhltable_init+0xf/0x30
[    9.047343]  ? test_insert_dup+0x41/0x43d
[    9.047343]  ? sched_clock_local+0xc5/0x190
[    9.047343]  ? kstrtos8_from_user+0xb0/0xb0
[    9.047343]  ? jhash+0x130/0x130
[    9.047343]  ? my_hashfn+0x30/0x30
[    9.047343]  ? test_rht_init+0x2b5/0x55f
[    9.047343]  ? vprintk_default+0xf/0x20
[    9.047343]  ? test_rhashtable+0x409/0x409
[    9.047343]  ? do_one_initcall+0x3f/0x1c0
[    9.047343]  ? parse_args+0xe6/0x370
[    9.047343]  ? set_debug_rodata+0xa/0xa
[    9.047343]  ? kernel_init_freeable+0xe6/0x174
[    9.047343]  ? kernel_init_freeable+0x100/0x174
[    9.047343]  ? rest_init+0x120/0x120
[    9.047343]  ? kernel_init+0x5/0xf0
[    9.047343]  ? ret_from_fork+0x19/0x30
[    9.047343] Code: ff ff c7 43 08 01 00 00 00 e9 d4 fe ff ff 8b 4c 24 0c 85 c9 0f 84 a5 fe ff ff 40 a3 ec 06 f6 c1 68 74 19 67 c1 e8 ee c1 e4 ff 5a <0f> 0b 8b 43 08 83 f8 03 0f 85 92 fe ff ff ba 83 05 68 c1 89 d8
[    9.047343] ---[ end trace 3fb7737483abaf54 ]---
[    9.136072] 

                                                          # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start v4.16 v4.15 --
git bisect good 1388c80438e69fc01d83fbe98da3cac24c3c8731  # 16:06  G     18     0   18  18  Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 98577c6aa2cddf73d55b6f1e2825a1f333ea1723  # 16:40  G     18     0   18  18  Merge tag 'chrome-platform-4.16-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform
git bisect good efac2483e8f289cd879e750075e63a9d16897e65  # 17:12  G     19     0   19  19  Merge branch 'for-4.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
git bisect  bad f1869a890cdedb92a3fab969db5d0fd982850273  # 17:31  B      0     9   24   0  tty: vt: fix up tabstops properly
git bisect  bad 9ec7ccc8f4f89843991cf692e89fc1fcbca85c83  # 17:59  B      0    14   29   0  Merge tag 'drm-fixes-for-v4.16-rc7' of git://people.freedesktop.org/~airlied/linux
git bisect good 76c0b6a36a1239494a5ae3c0dc83208a8112c483  # 18:36  G     19     0   19  19  Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
git bisect good 9ce207880d8e4b20b6c1bcd82c749970c2b9e6d2  # 18:53  G     18     0   18  18  Merge tag 'mmc-v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
git bisect  bad 394c73d396284897207dbb1bad2a43e621cb9dac  # 19:09  B      0    13   28   0  Merge tag 'modules-for-v4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
git bisect  bad c4f4d2f917729e9b7b8bb452bf4971be93e7a15f  # 19:30  B      0    12   27   0  Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
git bisect  bad 5a9f8df68ee6927f21dd3f2c75c16feb8b53a9e8  # 19:44  B      0     5   20   0  net: dsa: Fix dsa_is_user_port() test inversion
git bisect  bad 652dfb2b31b076153c73106863a4a57e5318c152  # 20:16  B      0    19   34   0  Merge tag 'wireless-drivers-for-davem-2018-03-08' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
git bisect  bad 17cfe79a65f98abe535261856c5aef14f306dff7  # 20:35  B      0    18   33   0  l2tp: do not accept arbitrary sockets
git bisect  bad 89036a2a9852f70dcec97d5962974fe806828382  # 20:52  B      0     2   17   0  Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
git bisect good 25b5cdfcce1b57971840505dfc78556bd12dea6d  # 21:27  G     19     0   19  19  dt-bindings: net: renesas-ravb: Make stream buffer optional
git bisect  bad 803fafbe0cd522fa6b9e41ca3b96cfb2e2a2222d  # 21:43  B      0     1   16   0  fsl/fman: avoid sleeping in atomic context while adding an address
git bisect  bad 499ac3b60f657dae82055fc81c7b01e6242ac9bc  # 22:20  B      0    19   34   0  test_rhashtable: add test case for rhltable with duplicate objects
git bisect good d3dcf8eb615537526bd42ff27a081d46d337816e  # 22:45  G     19     0   19  19  rhashtable: Fix rhlist duplicates insertion
# first bad commit: [499ac3b60f657dae82055fc81c7b01e6242ac9bc] test_rhashtable: add test case for rhltable with duplicate objects
git bisect good d3dcf8eb615537526bd42ff27a081d46d337816e  # 23:12  G     59     0   59  78  rhashtable: Fix rhlist duplicates insertion
# extra tests with debug options
git bisect  bad 499ac3b60f657dae82055fc81c7b01e6242ac9bc  # 23:29  B      0     1   16   0  test_rhashtable: add test case for rhltable with duplicate objects
# extra tests on HEAD of linus/master
git bisect  bad 30b06abfb92bfd5f9b63ea6a2ffb0bd905d1a6da  # 23:41  B      0     5   20   0  Merge tag 'pinctrl-v4.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
# extra tests on tree/branch linus/master
git bisect  bad 28c20cc73b9cc4288c86c2a3fc62af4087de4b19  # 00:06  B      0    19   34   0  Merge tag 'drm-fixes-2018-07-20' of git://anongit.freedesktop.org/drm/drm
# extra tests with first bad commit reverted
git bisect good 0f03cc902101ed1df7b09968eb0d7fa416e94519  # 00:30  G     18     0   18  18  Revert "test_rhashtable: add test case for rhltable with duplicate objects"
# extra tests on tree/branch linux-next/master
git bisect  bad 89cf553533084a35b44f533d59198497d3319d69  # 00:51  B      0     3   46  28  Add linux-next specific files for 20180720

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

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