linux-kernel - [lkp-robot] [platform/x86] b925ff7dcd: BUG:unable_to_handle

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Date:   Mon, 13 Feb 2017 10:40:15 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Michał Kępień <kernel@...pniu.pl>
Cc:     Jonathan Woithe <jwoithe@...t42.net>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        lkp@...org
Subject: [lkp-robot] [platform/x86]  b925ff7dcd: BUG:unable_to_handle_kernel


FYI, we noticed the following commit:

commit: b925ff7dcd1fc45b86baaebd3442f8b484123716 ("platform/x86: fujitsu-laptop: only register backlight device if FUJ02B1 is present")
url: https://github.com/0day-ci/linux/commits/Micha-K-pie/fujitsu-laptop-renames-and-cleanups/20170209-030748
base: git://git.infradead.org/users/dvhart/linux-platform-drivers-x86.git for-next

in testcase: boot

on test machine: qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap -m 360M

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


+------------------------------------------+------------+------------+
|                                          | 5b2f1ad8eb | b925ff7dcd |
+------------------------------------------+------------+------------+
| boot_successes                           | 14         | 0          |
| boot_failures                            | 0          | 14         |
| BUG:unable_to_handle_kernel              | 0          | 14         |
| Oops:#[##]                               | 0          | 14         |
| Kernel_panic-not_syncing:Fatal_exception | 0          | 14         |
+------------------------------------------+------------+------------+



[    4.657478] BUG: unable to handle kernel NULL pointer dereference at 00000008
[    4.658433] IP: fujitsu_init+0x137/0x1b7
[    4.659208] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 
[    4.659218] 
[    4.660432] Oops: 0002 [#1]
[    4.660781] CPU: 0 PID: 1 Comm: swapper Not tainted 4.10.0-rc6-00039-gb925ff7 #1
[    4.662127] task: c0011000 task.stack: c001a000
[    4.662684] EIP: fujitsu_init+0x137/0x1b7
[    4.663608] EFLAGS: 00210282 CPU: 0
[    4.664060] EAX: 00000000 EBX: 00000000 ECX: d1e775f7 EDX: 00000000
[    4.665098] ESI: 00000000 EDI: ffffffff EBP: c001bf18 ESP: c001bf14
[    4.665864]  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[    4.666338] CR0: 80050033 CR2: 00000008 CR3: 12d9e000 CR4: 000406b0
[    4.667193] Call Trace:
[    4.667417]  ? hdaps_init+0x20/0x20
[    4.667727]  do_one_initcall+0x7c/0x119
[    4.668106]  ? parse_args+0x269/0x470
[    4.668481]  ? kernel_init_freeable+0xd3/0x172
[    4.668999]  kernel_init_freeable+0xef/0x172
[    4.669432]  ? rest_init+0xb0/0xb0
[    4.669733]  kernel_init+0xb/0x100
[    4.670160]  ? schedule_tail+0xc/0x50
[    4.670484]  ? rest_init+0xb0/0xb0
[    4.670795]  ret_from_fork+0x21/0x30
[    4.671232] Code: ba 02 00 00 00 b9 04 00 00 00 b8 04 10 00 00 e8 0c 25 86 ff 83 f8 03 a1 20 f4 34 d3 5a 8b 40 2c 75 09 c7 40 08 04 00 00 00 eb 07 <c7> 40 08 00 00 00 00 68 18 b4 be d2 e8 4e 17 15 ff 58 eb 65 a1
[    4.673075] EIP: fujitsu_init+0x137/0x1b7 SS:ESP: 0068:c001bf14
[    4.673737] CR2: 0000000000000008
[    4.674040] ---[ end trace 8e0e45e20088f01f ]---


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/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-4.10.0-rc6-00039-gb925ff7" of type "text/plain" (91896 bytes)

View attachment "job-script" of type "text/plain" (3716 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (12016 bytes)