1:40 p.m.
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-renam...
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