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Date: Thu, 19 Apr 2018 11:14:49 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Paul Blakey <paulb@...lanox.com>
Cc: linux-kernel@...r.kernel.org, lkp@...org,
Thomas Graf <tgraf@...g.ch>,
Daniel Borkmann <daniel@...earbox.net>,
Florian Westphal <fw@...len.de>,
Herbert Xu <herbert@...dor.apana.org.au>
Subject: 499ac3b60f ("test_rhashtable: add test case for rhltable with
duplicate objects"): 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/next/linux-next.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
+----------------------------------------------------+------------+------------+
| | d3dcf8eb61 | 499ac3b60f |
+----------------------------------------------------+------------+------------+
| boot_successes | 28 | 0 |
| boot_failures | 0 | 15 |
| WARNING:at_lib/debugobjects.c:#__debug_object_init | 0 | 15 |
| EIP:__debug_object_init | 0 | 15 |
| Mem-Info | 0 | 2 |
+----------------------------------------------------+------------+------------+
[ 9.724580] Duration of test: 115289366 ns
[ 9.736431] test if its possible to exceed max_size 8192: no, ok
[ 9.737933] Average test time: 118138571
[ 9.738694] test inserting duplicates
[ 9.739384] ODEBUG: object is on stack, but not annotated
[ 9.740024] WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:328 __debug_object_init+0x17b/0x380
[ 9.740024] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.16.0-rc4-00130-g499ac3b #1
[ 9.740024] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 9.740024] EIP: __debug_object_init+0x17b/0x380
[ 9.740024] EFLAGS: 00210096 CPU: 0
[ 9.740024] EAX: 0000002d EBX: c0023e3c ECX: c0080ae0 EDX: 00000000
[ 9.740024] ESI: c2403d14 EDI: c2e99fa0 EBP: c2e99f9c ESP: c0023d90
[ 9.740024] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 9.740024] CR0: 80050033 CR2: 00000000 CR3: 02828000 CR4: 00000690
[ 9.740024] Call Trace:
[ 9.740024] ? kstrtos8_from_user+0x50/0x50
[ 9.740024] ? rhashtable_init+0x1ff/0x2d0
[ 9.740024] ? rhltable_init+0xf/0x20
[ 9.740024] ? test_insert_dup+0x38/0x430
[ 9.740024] ? __lock_acquire+0x47c/0x8a0
[ 9.740024] ? kstrtos8_from_user+0x50/0x50
[ 9.740024] ? jhash+0x120/0x120
[ 9.740024] ? my_hashfn+0x30/0x30
[ 9.740024] ? test_rht_init+0x2bd/0x55f
[ 9.740024] ? test_rhashtable+0x40f/0x40f
[ 9.740024] ? do_one_initcall+0x7c/0x120
[ 9.740024] ? kernel_init_freeable+0xcc/0x164
[ 9.740024] ? kernel_init_freeable+0xec/0x164
[ 9.740024] ? rest_init+0x110/0x110
[ 9.740024] ? kernel_init+0x5/0xe0
[ 9.740024] ? ret_from_fork+0x19/0x24
[ 9.740024] Code: 00 39 d3 0f 83 32 01 00 00 83 7c 24 08 01 74 20 89 4c 24 08 68 14 3d 40 c2 83 c0 01 a3 cc a7 e3 c2 e8 7f 90 ab ff 5e 8b 4c 24 08 <0f> 0b 8d 76 00 8b 41 08 83 f8 03 74 48 72 36 83 f8 04 75 0c ba
[ 9.740024] ---[ end trace 0df84646a6fe1676 ]---
[ 9.763142]
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start f495aa00f6e9a7241096abc57c000cf2f98a2a40 661e50bc853209e41a5c14a290ca4decc43cbfd1 --
git bisect good 48d0d60ce4ae55c6e81020c638e4031faf8e8b92 # 04:31 G 11 0 0 0 Merge 'krzk/for-next' into devel-hourly-2018030913
git bisect good 1f5ca3de3b75425387c5fe59906a03e4fa6573ad # 04:49 G 11 0 1 1 Merge 'anholt/for-next' into devel-hourly-2018030913
git bisect bad 7e454c4a43319dd82b50bc7374dff990b51ee05b # 05:04 B 0 1 14 0 Merge 'block/for-next' into devel-hourly-2018030913
git bisect bad 223f4a9a8596ee7d6b4ca78605320f4eba725eb8 # 05:24 B 0 8 21 0 Merge 'jkirsher-net-queue/dev-queue' into devel-hourly-2018030913
git bisect good 3078ca90f959c821b41933bac8bacbf49cdaf624 # 05:50 G 10 0 5 5 Merge 'lpieralisi-pci/pci/rcar' into devel-hourly-2018030913
git bisect bad 89036a2a9852f70dcec97d5962974fe806828382 # 06:04 B 0 7 20 0 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
git bisect good 25b5cdfcce1b57971840505dfc78556bd12dea6d # 06:19 G 11 0 5 5 dt-bindings: net: renesas-ravb: Make stream buffer optional
git bisect bad 803fafbe0cd522fa6b9e41ca3b96cfb2e2a2222d # 06:35 B 0 5 18 0 fsl/fman: avoid sleeping in atomic context while adding an address
git bisect bad 499ac3b60f657dae82055fc81c7b01e6242ac9bc # 06:53 B 0 2 15 0 test_rhashtable: add test case for rhltable with duplicate objects
git bisect good d3dcf8eb615537526bd42ff27a081d46d337816e # 07:09 G 11 0 2 2 rhashtable: Fix rhlist duplicates insertion
# first bad commit: [499ac3b60f657dae82055fc81c7b01e6242ac9bc] test_rhashtable: add test case for rhltable with duplicate objects
git bisect good d3dcf8eb615537526bd42ff27a081d46d337816e # 07:19 G 30 0 8 10 rhashtable: Fix rhlist duplicates insertion
# extra tests with debug options
git bisect bad 499ac3b60f657dae82055fc81c7b01e6242ac9bc # 07:35 B 0 5 18 0 test_rhashtable: add test case for rhltable with duplicate objects
# extra tests on HEAD of linux-devel/devel-hourly-2018030913
git bisect bad f495aa00f6e9a7241096abc57c000cf2f98a2a40 # 07:40 B 0 57 73 0 0day head guard for 'devel-hourly-2018030913'
# extra tests on tree/branch linux-next/master
# extra tests with first bad commit reverted
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
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