linux-kernel - [efi] 1c5fecb612: WARNING:at

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Message-ID: <20191201155238.GR18573@shao2-debian>
Date:   Sun, 1 Dec 2019 23:52:38 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Narendra K <Narendra.K@...l.com>
Cc:     Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Mario Limonciello <mario.limonciello@...l.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        lkp@...ts.01.org
Subject: [efi] 1c5fecb612: WARNING:at_kernel/iomem.c:#memremap

FYI, we noticed the following commit (built with gcc-7):

commit: 1c5fecb61255aa12a16c4c06335ab68979865914 ("efi: Export Runtime Configuration Interface table to sysfs")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: rcutorture
with following parameters:

	runtime: 300s
	test: default
	torture_type: tasks

test-description: rcutorture is rcutorture kernel module load/unload test.
test-url: https://www.kernel.org/doc/Documentation/RCU/torture.txt


on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G

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


+------------------------------------------------+------------+------------+
|                                                | 5828efb95b | 1c5fecb612 |
+------------------------------------------------+------------+------------+
| boot_successes                                 | 0          | 0          |
| boot_failures                                  | 4          | 4          |
| Kernel_panic-not_syncing:No_working_init_found | 4          | 4          |
| WARNING:at_kernel/iomem.c:#memremap            | 0          | 4          |
| EIP:memremap                                   | 0          | 4          |
+------------------------------------------------+------------+------------+


If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>


[   27.829857] WARNING: CPU: 0 PID: 1 at kernel/iomem.c:82 memremap+0x62/0x148
[   27.832571] Modules linked in:
[   27.833528] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G                T 5.3.0-rc1-00004-g1c5fecb61255a #2
[   27.836364] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[   27.838876] EIP: memremap+0x62/0x148
[   27.840028] Code: 89 c7 83 f8 02 75 2a 80 3d bb 47 c8 c1 00 0f 85 bd 00 00 00 c6 05 bb 47 c8 c1 01 53 8d 45 ec 50 68 78 3c a5 c1 e8 f2 ff f1 ff <0f> 0b e9 9d 00 00 00 31 c0 f7 c6 01 00 00 00 74 65 85 ff 74 0f 89
[   27.845798] EAX: 0000003f EBX: 0000001e ECX: 00000000 EDX: 30706000
[   27.847665] ESI: 00000001 EDI: 00000002 EBP: e9e03f0c ESP: e9e03ee4
[   27.849523] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010282
[   27.851616] CR0: 80050033 CR2: 08056130 CR3: 01db5000 CR4: 000406b0
[   27.853465] Call Trace:
[   27.853896]  ? kobject_add+0x5b/0x66
[   27.854502]  ? map_properties+0x425/0x425
[   27.855171]  efi_rci2_sysfs_init+0x1f/0x1e2
[   27.855873]  ? map_properties+0x425/0x425
[   27.856545]  do_one_initcall+0xa0/0x1cb
[   27.857187]  ? parse_args+0xa3/0x28b
[   27.857823]  ? trace_initcall_level+0x53/0x6e
[   27.858548]  kernel_init_freeable+0x102/0x190
[   27.859300]  ? rest_init+0xee/0xee
[   27.859887]  kernel_init+0xd/0xdf
[   27.860443]  ret_from_fork+0x1e/0x28
[   27.861144] ---[ end trace c5c6f0b028e1905c ]---


To reproduce:

        # build kernel
	cd linux
	cp config-5.3.0-rc1-00004-g1c5fecb61255a .config
	make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 olddefconfig prepare modules_prepare bzImage

        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,
Rong Chen


View attachment "config-5.3.0-rc1-00004-g1c5fecb61255a" of type "text/plain" (112992 bytes)

View attachment "job-script" of type "text/plain" (4454 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (14240 bytes)