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Date:   Wed, 06 Mar 2019 15:25:11 +0800
From:   kernel test robot <lkp@...el.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     LKP <lkp@...org>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org
Subject: 2264f5132f ("xarray: Add xas_create_range"):  watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [swapper/0:1]

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 2264f5132fe45571139727ebdeb78696b35d1506
Author:     Matthew Wilcox <willy@...radead.org>
AuthorDate: Mon Dec 4 00:11:48 2017 -0500
Commit:     Matthew Wilcox <willy@...radead.org>
CommitDate: Sun Oct 21 10:45:59 2018 -0400

    xarray: Add xas_create_range
    
    This hopefully temporary function is useful for users who have not yet
    been converted to multi-index entries.
    
    Signed-off-by: Matthew Wilcox <willy@...radead.org>

4e99d4e957  xarray: Add xas_for_each_conflict
2264f5132f  xarray: Add xas_create_range
3717f613f4  Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
baf5a9d1f9  Add linux-next specific files for 20190305
+------------------------------------------------+------------+------------+------------+---------------+
|                                                | 4e99d4e957 | 2264f5132f | 3717f613f4 | next-20190305 |
+------------------------------------------------+------------+------------+------------+---------------+
| boot_successes                                 | 823        | 268        | 196        | 21            |
| boot_failures                                  | 0          | 13         | 85         | 5             |
| BUG:soft_lockup-CPU##stuck_for#s               | 0          | 13         | 85         | 5             |
| EIP:arch_local_irq_restore                     | 0          | 9          |            |               |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 0          | 13         | 85         | 5             |
| EIP:do_raw_spin_lock                           | 0          | 1          |            |               |
| EIP:xas_alloc                                  | 0          | 1          | 1          |               |
| EIP:xas_descend                                | 0          | 1          | 4          |               |
| EIP:arch_local_save_flags                      | 0          | 1          |            |               |
| EIP:_raw_spin_unlock_irqrestore                | 0          | 0          | 51         | 5             |
| EIP:xas_load                                   | 0          | 0          | 4          |               |
| EIP:xa_is_node                                 | 0          | 0          | 2          |               |
| EIP:xas_store                                  | 0          | 0          | 6          |               |
| EIP:__xas_next                                 | 0          | 0          | 1          |               |
| EIP:_find_next_bit                             | 0          | 0          | 2          |               |
| EIP:xas_next_marked                            | 0          | 0          | 3          |               |
| EIP:xas_result                                 | 0          | 0          | 1          |               |
| EIP:check_find_3                               | 0          | 0          | 1          |               |
| EIP:xa_erase_index                             | 0          | 0          | 1          |               |
| EIP:xas_init_marks                             | 0          | 0          | 2          |               |
| EIP:xas_start                                  | 0          | 0          | 1          |               |
| EIP:xas_find_marked                            | 0          | 0          | 1          |               |
| EIP:__call_rcu                                 | 0          | 0          | 1          |               |
| EIP:xas_clear_mark                             | 0          | 0          | 1          |               |
| EIP:xas_create                                 | 0          | 0          | 1          |               |
| EIP:xa_load                                    | 0          | 0          | 1          |               |
+------------------------------------------------+------------+------------+------------+---------------+

[   20.348565] test_firmware: interface ready
[   20.739595] IDA: 147321 of 147321 tests passed
[   20.751639] test_printf: crng possibly not yet initialized. plain 'p' buffer contains "(ptrval)"
[   20.752775] test_printf: all 240 tests passed
[   20.773777] test_uuid: all 18 tests passed
[   46.091442] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [swapper/0:1]
[   46.111602] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.19.0-rc5-00256-g2264f51 #1
[   46.121589] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[   46.131615] EIP: arch_local_irq_restore+0x2/0x7
[   46.141580] Code: 2d b2 00 75 13 68 6a fc e1 b1 68 e2 0e e1 b1 e8 5d 53 fd ff 0f 0b 58 5a c7 43 20 00 00 00 00 5b c3 9c 58 8d 74 26 00 c3 50 9d <8d> 74 26 00 c3 fa 90 8d 74 26 00 c3 fb 90 8d 74 26 00 c3 3d b0 2e
[   46.171652] EAX: 00200206 EBX: 00200206 ECX: 00000000 EDX: 00200206
[   46.181601] ESI: b231907c EDI: 00043eb8 EBP: b1f8b740 ESP: cdc31e34
[   46.191592] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00200206
[   46.201599] CR0: 80050033 CR2: ffffffff CR3: 0218c000 CR4: 00000690
[   46.211554] Call Trace:
[   46.211554]  ? _raw_spin_unlock_irqrestore+0xf/0x18
[   46.221628]  ? debug_object_active_state+0xac/0xc6
[   46.231606]  ? debug_rcu_head_queue+0x20/0x26
[   46.231606]  ? __call_rcu+0x27/0x162
[   46.241616]  ? radix_tree_node_ctor+0x19/0x19
[   46.251605]  ? call_rcu_sched+0xc/0xe
[   46.251605]  ? xas_free_nodes+0x64/0x73
[   46.261587]  ? xas_store+0x11b/0x2bd
[   46.271596]  ? __check_store_iter+0x143/0x26f
[   46.271596]  ? check_store_iter+0x1a9/0x25c
[   46.281606]  ? check_xas_retry+0x328/0x328
[   46.291619]  ? xarray_checks+0x41/0x73
[   46.301602]  ? do_one_initcall+0x62/0x132
[   46.301602]  ? do_early_param+0x6c/0x6c
[   46.311591]  ? kernel_init_freeable+0xdc/0x17b
[   46.321601]  ? kernel_init_freeable+0xfe/0x17b
[   46.321601]  ? rest_init+0x9c/0x9c
[   46.331608]  ? kernel_init+0x5/0xd1
[   46.341600]  ? ret_from_fork+0x19/0x24
[   46.341600] Kernel panic - not syncing: softlockup: hung tasks
[   46.351557] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G             L    4.19.0-rc5-00256-g2264f51 #1
[   46.361587] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[   46.371629] Call Trace:
[   46.381579]  ? dump_stack+0x52/0x66
[   46.381579]  ? panic+0x93/0x1aa
[   46.391564]  ? watchdog_timer_fn+0x1dc/0x1fd
[   46.391564]  ? __hrtimer_run_queues+0xa3/0xe9
[   46.401635]  ? softlockup_fn+0x25/0x25
[   46.411624]  ? hrtimer_run_queues+0xc7/0xdb
[   46.411624]  ? run_local_timers+0x12/0x36
[   46.421599]  ? update_process_times+0x19/0x40
[   46.431580]  ? tick_nohz_handler+0xaf/0xe9
[   46.431580]  ? smp_apic_timer_interrupt+0x51/0x60
[   46.442305]  ? apic_timer_interrupt+0xf8/0x100
[   46.451611]  ? arch_local_irq_restore+0x2/0x7
[   46.451611]  ? _raw_spin_unlock_irqrestore+0xf/0x18
[   46.461659]  ? debug_object_active_state+0xac/0xc6
[   46.471580]  ? debug_rcu_head_queue+0x20/0x26
[   46.481588]  ? __call_rcu+0x27/0x162
[   46.491506]  ? radix_tree_node_ctor+0x19/0x19
[   46.491629]  ? call_rcu_sched+0xc/0xe
[   46.501620]  ? xas_free_nodes+0x64/0x73
[   46.501620]  ? xas_store+0x11b/0x2bd
[   46.511630]  ? __check_store_iter+0x143/0x26f
[   46.521609]  ? check_store_iter+0x1a9/0x25c
[   46.531591]  ? check_xas_retry+0x328/0x328
[   46.541597]  ? xarray_checks+0x41/0x73
[   46.541597]  ? do_one_initcall+0x62/0x132
[   46.551579]  ? do_early_param+0x6c/0x6c
[   46.561494]  ? kernel_init_freeable+0xdc/0x17b
[   46.561594]  ? kernel_init_freeable+0xfe/0x17b
[   46.571616]  ? rest_init+0x9c/0x9c
[   46.581628]  ? kernel_init+0x5/0xd1
[   46.581628]  ? ret_from_fork+0x19/0x24
[   46.591638] Kernel Offset: disabled


                                                          # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start v4.20 v4.19 --
git bisect  bad 1de4f2ef216dade3b5bd5f5247c4c750a953f51c  # 10:55  B     11     1   11  34  Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
git bisect good 69d5b97c597307773fe6c59775a5d5a88bb7e6b3  # 11:20  G    150     0    0   0  HID: we do not randomly make new drivers 'default y'
git bisect  bad b5b1de3537e2cd8f52971224a1be24bb3ce34a65  # 11:36  B     39     6   39  39  Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
git bisect  bad 6ef746769ef5cfef84cdfdf61ecbab5a6aa4651a  # 11:49  B     30     8   30  30  Merge tag 'pm-4.20-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
git bisect  bad fe675d4d3c6b96710d481346821839b4a817c672  # 12:01  B     38     6   38  38  Merge tag 'mailbox-v4.20' of git://git.linaro.org/landing-teams/working/fujitsu/integration
git bisect  bad 9f51ae62c84a23ade0ba86457d30a30c9db0c50f  # 12:15  B     11     3   12  12  Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
git bisect  bad ac747c0715f29c2be3848b719a1b7e65b07f7b21  # 12:29  B     12     6   13  13  Merge tag 'kbuild-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
git bisect  bad dad4f140edaa3f6bb452b6913d41af1ffd672e45  # 12:51  B      4     2    4   4  Merge branch 'xarray' of git://git.infradead.org/users/willy/linux-dax
git bisect  bad 77da9389b9d5f07d54fda092d1ab56002ec0019a  # 13:04  B     10     1    0   0  mm: Convert collapse_shmem to XArray
git bisect  bad eb797a8ee0ab4cd03df556980ce7bf167cadaa50  # 13:14  B      1     1    0   0  page cache: Rearrange address_space
git bisect good 41aec91f55985e7f14ee75fe2f6e7bcfff0d0fae  # 13:27  G    157     0    0   0  xarray: Add XArray conditional store operations
git bisect good 4e99d4e9579d3b950bf4b38d0d64eb1b9be78761  # 13:40  G    152     0    0   0  xarray: Add xas_for_each_conflict
git bisect  bad 3d5bd6e1a04ae779bc5e0de9ba2e92aa55c40fe8  # 13:52  B     99     3    0   0  xarray: Add MAINTAINERS entry
git bisect  bad 9f14d4f1f1045f161fd4db8a8e194b7825c2874a  # 14:07  B      3     1    1   1  xarray: Add xa_reserve and xa_release
git bisect  bad 2264f5132fe45571139727ebdeb78696b35d1506  # 14:18  B     42     2    2   2  xarray: Add xas_create_range
# first bad commit: [2264f5132fe45571139727ebdeb78696b35d1506] xarray: Add xas_create_range
git bisect good 4e99d4e9579d3b950bf4b38d0d64eb1b9be78761  # 14:33  G    815     0    0   0  xarray: Add xas_for_each_conflict
# extra tests with debug options
git bisect  bad 2264f5132fe45571139727ebdeb78696b35d1506  # 14:46  B      0     2   16   0  xarray: Add xas_create_range
# extra tests on HEAD of linus/master
git bisect  bad 63bdf4284c38a48af21745ceb148a087b190cd21  # 14:57  B      3    12    3   4  Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
# extra tests on tree/branch linus/master
git bisect  bad 3717f613f48df0222311f974cf8a06c8a6c97bae  # 15:13  B      3     3    1   1  Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
# extra tests on tree/branch linux-next/master
git bisect  bad baf5a9d1f9b95eb97e9eb54932e20dbbf814771c  # 15:23  B     13     2    0   0  Add linux-next specific files for 20190305

---
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