linux-kernel - [lib/bitmap] 11692cc46d: BUG:kernel_reboot-without-warning_in_boot

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Date:   Tue, 19 Jul 2022 22:14:47 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Paul Menzel <pmenzel@...gen.mpg.de>
Cc:     Yury Norov <yury.norov@...il.com>, linux-kernel@...r.kernel.org,
        lkp@...ts.01.org, lkp@...el.com
Subject: [lib/bitmap]  11692cc46d:
 BUG:kernel_reboot-without-warning_in_boot_stage



Greeting,

FYI, we noticed the following commit (built with gcc-11):

commit: 11692cc46d6a33394930b3fbf52431697fa79ec1 ("lib/bitmap: Make count and length parameters unsigned")
https://github.com/norov/linux __bitmap-for-next

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

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


+-------------------------------------------------+------------+------------+
|                                                 | d9c0a24a77 | 11692cc46d |
+-------------------------------------------------+------------+------------+
| boot_successes                                  | 12         | 0          |
| boot_failures                                   | 0          | 16         |
| BUG:kernel_reboot-without-warning_in_boot_stage | 0          | 16         |
+-------------------------------------------------+------------+------------+


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


[    2.110742][    T0] Dentry cache hash table entries: 2097152 (order: 12, 16777216 bytes, linear)
[    2.118619][    T0] Inode-cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear)
[    2.121232][    T0] mem auto-init: stack:off, heap alloc:off, heap free:off
[    2.122840][    T0] Stack Depot early init allocating hash table with memblock_alloc, 8388608 bytes
[    2.602190][    T0] Memory: 2984360K/16776696K available (40969K kernel code, 13408K rwdata, 8584K rodata, 3240K init, 4676K bss, 3068416K reserved, 0K cma-reserved)
BUG: kernel reboot-without-warning in boot stage

Kboot worker: lkp-worker31
Elapsed time: 60

kvm=(


To reproduce:

        # build kernel
	cd linux
	cp config-5.19.0-rc3-00038-g11692cc46d6a .config
	make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
	cd <mod-install-dir>
	find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz


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

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



View attachment "config-5.19.0-rc3-00038-g11692cc46d6a" of type "text/plain" (164567 bytes)

View attachment "job-script" of type "text/plain" (4627 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (3972 bytes)