linux-kernel - [lkp-robot] [blk] 47e0fb461f: BUG:unable_to_handle

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Date:   Thu, 21 Sep 2017 10:46:03 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     NeilBrown <neilb@...e.com>
Cc:     Jens Axboe <axboe@...nel.dk>, Christoph Hellwig <hch@....de>,
        Ming Lei <ming.lei@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: [lkp-robot] [blk]  47e0fb461f: BUG:unable_to_handle_kernel


FYI, we noticed the following commit:

commit: 47e0fb461fca1a68a566c82fcc006cc787312d8c ("blk: make the bioset rescue_workqueue optional.")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: trinity
with following parameters:

	runtime: 300s

test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/


on test machine: qemu-system-x86_64 -enable-kvm -cpu IvyBridge -m 420M

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+-------------------------------------------------------+------------+------------+
|                                                       | 011067b056 | 47e0fb461f |
+-------------------------------------------------------+------------+------------+
| boot_successes                                        | 0          | 0          |
| boot_failures                                         | 6          | 6          |
| WARNING:at_drivers/ata/libata-core.c:#ata_host_detach | 6          | 6          |
| EIP:ata_host_detach                                   | 6          | 6          |
| BUG:unable_to_handle_kernel                           | 0          | 6          |
| Oops:#[##]                                            | 0          | 6          |
| EIP:ata_dev_next                                      | 0          | 6          |
| Kernel_panic-not_syncing:Fatal_exception              | 0          | 6          |
+-------------------------------------------------------+------------+------------+



[   60.775694] BUG: unable to handle kernel paging request at 00002480
[   60.776801] IP: ata_dev_next+0x74/0xd4
[   60.777629] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 
[   60.777635] 
[   60.779284] Oops: 0000 [#1]
[   60.780019] CPU: 0 PID: 44 Comm: kworker/u2:3 Tainted: G S      W       4.12.0-rc5-00126-g47e0fb46 #1
[   60.781816] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[   60.783712] Workqueue: events_unbound async_run_entry_fn
[   60.784703] task: d4bfe940 task.stack: d515e000
[   60.785615] EIP: ata_dev_next+0x74/0xd4
[   60.786453] EFLAGS: 00210286 CPU: 0
[   60.787248] EAX: d5f85e80 EBX: 00000000 ECX: 00000001 EDX: d5f85640
[   60.788329] ESI: d5f858a0 EDI: 00000000 EBP: d515fef4 ESP: d515fee8
[   60.789416]  DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
[   60.790419] CR0: 80050033 CR2: 00002480 CR3: 02a75000 CR4: 001406b0
[   60.791506] Call Trace:
[   60.792195]  ata_scsi_scan_host+0x38/0x131
[   60.793051]  async_port_probe+0x43/0x48
[   60.793886]  async_run_entry_fn+0x3b/0x13b
[   60.794746]  process_one_work+0x11f/0x26c
[   60.795595]  worker_thread+0x1b2/0x26f
[   60.796419]  kthread+0xf9/0xfe
[   60.797168]  ? process_scheduled_works+0x24/0x24
[   60.798074]  ? __kthread_create_on_node+0x109/0x109
[   60.799021]  ret_from_fork+0x19/0x30
[   60.799829] Code: 41 69 c9 e0 05 00 00 8d 84 08 20 fa ff ff eb 2f 83 fb 03 74 66 05 e0 05 00 00 8b 3a 8d 8f 40 16 00 00 39 ca 74 49 b9 01 00 00 00 <39> 97 80 24 00 00 74 3c 69 c9 e0 05 00 00 01 f1 39 c8 73 45 83
[   60.802985] EIP: ata_dev_next+0x74/0xd4 SS:ESP: 0068:d515fee8
[   60.804012] CR2: 0000000000002480
[   60.804794] ---[ end trace a06f3b23fe961bc3 ]---


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong

View attachment "config-4.12.0-rc5-00126-g47e0fb46" of type "text/plain" (117880 bytes)

View attachment "job-script" of type "text/plain" (3715 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (16160 bytes)