FYI, we noticed the following commit (built with gcc-7): commit: dea079527088cffccd014c815ecaf5b0f0506c59 ("[[repost]RFC PATCH] mm/workingset : judge file page activity via timestamp") url: https://github.com/0day-ci/linux/commits/Zhaoyang-Huang/RFC-PATCH-mm-work... 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 SandyBridge -smp 2 -m 2G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +-------------------------------+------------+------------+ | | 9520b5324b | dea0795270 | +-------------------------------+------------+------------+ | boot_successes | 4 | 0 | | boot_failures | 0 | 4 | | BUG:kernel_hang_in_boot_stage | 0 | 4 | +-------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com&gt; [ 0.067096] ACPI: Early table checksum verification disabled [ 0.068955] ACPI: RSDP 0x00000000000F6840 000014 (v00 BOCHS ) [ 0.071039] ACPI: RSDT 0x000000007FFE15C9 000030 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.073473] ACPI: FACP 0x000000007FFE149D 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.075983] ACPI: DSDT 0x000000007FFE0040 00145D (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) BUG: kernel hang in boot stage Elapsed time: 140 qemu-img create -f qcow2 disk-vm-snb-2G-406-0 256G qemu-img create -f qcow2 disk-vm-snb-2G-406-1 256G To reproduce: # build kernel cd linux cp config-5.1.0-rc6-00158-gdea07952 .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 prepare make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 modules_prepare make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 SHELL=/bin/bash make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 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, lkp