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 AuthorDate: Sun Mar 4 17:29:49 2018 +0200 Commit: David S. Miller 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 Acked-by: Herbert Xu Signed-off-by: David S. Miller d3dcf8eb61 rhashtable: Fix rhlist duplicates insertion 499ac3b60f test_rhashtable: add test case for rhltable with duplicate objects 69d5b97c59 HID: we do not randomly make new drivers 'default y' 8c60c36d0b Add linux-next specific files for 20181019 +--------------------------------------------------------------------+------------+------------+------------+---------------+ | | d3dcf8eb61 | 499ac3b60f | 69d5b97c59 | next-20181019 | +--------------------------------------------------------------------+------------+------------+------------+---------------+ | boot_successes | 31 | 0 | 0 | 0 | | boot_failures | 0 | 11 | 11 | 11 | | WARNING:at_lib/debugobjects.c:#__debug_object_init | 0 | 11 | 11 | 11 | | EIP:__debug_object_init | 0 | 11 | 11 | 11 | | WARNING:suspicious_RCU_usage | 0 | 11 | | | | lib/test_rhashtable.c:#suspicious_rcu_dereference_protected()usage | 0 | 11 | | | +--------------------------------------------------------------------+------------+------------+------------+---------------+ [ 2.446663] Duration of test: 327878701 ns [ 2.477209] test if its possible to exceed max_size 8192: no, ok [ 2.478020] Average test time: 316717656 [ 2.478351] test inserting duplicates [ 2.478695] ODEBUG: object is on stack, but not annotated [ 2.479301] WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:328 __debug_object_init+0x1c3/0x390 [ 2.480022] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.16.0-rc4-00130-g499ac3b #1 [ 2.480022] EIP: __debug_object_init+0x1c3/0x390 [ 2.480022] EFLAGS: 00210082 CPU: 0 [ 2.480022] EAX: 0000002d EBX: 401e7e08 ECX: 4018dea8 EDX: 00000000 [ 2.480022] ESI: 4cc18e94 EDI: 4bf60600 EBP: 401e7d64 ESP: 401e7d40 [ 2.480022] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 2.480022] CR0: 80050033 CR2: 00000000 CR3: 0c3df000 CR4: 001406b0 [ 2.480022] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 2.480022] DR6: fffe0ff0 DR7: 00000400 [ 2.480022] Call Trace: [ 2.480022] ? config_sync_direct_show+0x40/0x40 [ 2.480022] ? debug_object_init+0x1a/0x20 [ 2.480022] ? __init_work+0x16/0x30 [ 2.480022] ? rhashtable_init+0x163/0x2d0 [ 2.480022] ? rhltable_init+0x12/0x30 [ 2.480022] ? test_insert_dup+0x43/0x67d [ 2.480022] ? sched_clock_cpu+0x10f/0x130 [ 2.480022] ? config_sync_direct_show+0x40/0x40 [ 2.480022] ? jhash+0x130/0x130 [ 2.480022] ? my_hashfn+0x30/0x30 [ 2.480022] ? test_rht_init+0x2b8/0x563 [ 2.480022] ? kfree+0x22a/0x2a0 [ 2.480022] ? igb_xmit_frame_ring+0x382/0xb90 [ 2.480022] ? test_rhashtable+0x773/0x773 [ 2.480022] ? do_one_initcall+0x90/0x13b [ 2.480022] ? parse_args+0x1c0/0x2c0 [ 2.480022] ? do_early_param+0x78/0x78 [ 2.480022] ? kernel_init_freeable+0xf3/0x166 [ 2.480022] ? rest_init+0x1f0/0x1f0 [ 2.480022] ? kernel_init+0xd/0xf0 [ 2.480022] ? ret_from_fork+0x2e/0x38 [ 2.480022] Code: 39 d3 0f 83 03 01 00 00 83 7d dc 01 0f 84 d4 fe ff ff 68 00 06 f6 4b 83 c0 01 89 4d e4 a3 2c 49 c0 4c e8 90 43 d7 ff 5f 8b 4d e4 <0f> 0b e9 b4 fe ff ff 8d b6 00 00 00 00 a3 74 45 18 4c e9 fa fe [ 2.480022] ---[ end trace e4315fcaa0eaa1bc ]--- [ 2.507561] # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD git bisect start v4.16 v4.15 -- git bisect good 1388c80438e69fc01d83fbe98da3cac24c3c8731 # 01:00 G 11 0 0 0 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip git bisect good 98577c6aa2cddf73d55b6f1e2825a1f333ea1723 # 01:14 G 11 0 0 0 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 # 01:26 G 11 0 0 0 Merge branch 'for-4.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata git bisect bad f1869a890cdedb92a3fab969db5d0fd982850273 # 02:03 B 0 10 24 0 tty: vt: fix up tabstops properly git bisect bad 9ec7ccc8f4f89843991cf692e89fc1fcbca85c83 # 02:38 B 0 11 25 0 Merge tag 'drm-fixes-for-v4.16-rc7' of git://people.freedesktop.org/~airlied/linux git bisect good 76c0b6a36a1239494a5ae3c0dc83208a8112c483 # 02:51 G 11 0 0 0 Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi git bisect good 9ce207880d8e4b20b6c1bcd82c749970c2b9e6d2 # 03:02 G 11 0 0 0 Merge tag 'mmc-v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc git bisect bad 394c73d396284897207dbb1bad2a43e621cb9dac # 03:35 B 0 7 21 0 Merge tag 'modules-for-v4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux git bisect bad c4f4d2f917729e9b7b8bb452bf4971be93e7a15f # 04:09 B 0 4 18 0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net git bisect bad 5a9f8df68ee6927f21dd3f2c75c16feb8b53a9e8 # 04:51 B 0 2 17 1 net: dsa: Fix dsa_is_user_port() test inversion git bisect bad 652dfb2b31b076153c73106863a4a57e5318c152 # 05:31 B 0 3 17 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 # 06:09 B 0 1 15 0 l2tp: do not accept arbitrary sockets git bisect bad 89036a2a9852f70dcec97d5962974fe806828382 # 06:50 B 0 5 19 0 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth git bisect good 25b5cdfcce1b57971840505dfc78556bd12dea6d # 07:09 G 11 0 0 0 dt-bindings: net: renesas-ravb: Make stream buffer optional git bisect bad 803fafbe0cd522fa6b9e41ca3b96cfb2e2a2222d # 07:46 B 0 2 16 0 fsl/fman: avoid sleeping in atomic context while adding an address git bisect bad 499ac3b60f657dae82055fc81c7b01e6242ac9bc # 08:26 B 0 1 15 0 test_rhashtable: add test case for rhltable with duplicate objects git bisect good d3dcf8eb615537526bd42ff27a081d46d337816e # 08:47 G 11 0 0 0 rhashtable: Fix rhlist duplicates insertion # first bad commit: [499ac3b60f657dae82055fc81c7b01e6242ac9bc] test_rhashtable: add test case for rhltable with duplicate objects git bisect good d3dcf8eb615537526bd42ff27a081d46d337816e # 09:07 G 31 0 0 0 rhashtable: Fix rhlist duplicates insertion # extra tests with debug options git bisect bad 499ac3b60f657dae82055fc81c7b01e6242ac9bc # 09:40 B 0 2 16 0 test_rhashtable: add test case for rhltable with duplicate objects # extra tests on HEAD of linux-devel/devel-catchup-201810272014 git bisect bad bde3aebf99e207edd8f1d6a67d5a3e8663f31a52 # 09:45 B 0 21 38 0 0day head guard for 'devel-catchup-201810272014' # extra tests on tree/branch linus/master git bisect bad 69d5b97c597307773fe6c59775a5d5a88bb7e6b3 # 10:21 B 0 11 25 0 HID: we do not randomly make new drivers 'default y' # extra tests on tree/branch linux-next/master git bisect bad 8c60c36d0b8c92599b8f0ec391b5250bc40e8e05 # 10:55 B 0 1 15 0 Add linux-next specific files for 20181019 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/lkp Intel Corporation