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Message-ID: <20180409224152.4d7fe6b7@vmware.local.home> Date: Mon, 9 Apr 2018 22:41:52 -0400 From: Steven Rostedt <rostedt@...dmis.org> To: Ye Xiaolong <xiaolong.ye@...el.com> Cc: linux-kernel@...r.kernel.org, lkp@...org Subject: Re: [lkp-robot] [init, tracing] 2580d6b795: BUG:kernel_reboot-without-warning_in_boot_stage On Tue, 10 Apr 2018 09:23:40 +0800 Ye Xiaolong <xiaolong.ye@...el.com> wrote: > Hi, Steven > > On 04/09, Steven Rostedt wrote: > >On Mon, 9 Apr 2018 13:32:52 +0800 > >kernel test robot <xiaolong.ye@...el.com> wrote: > > > >> FYI, we noticed the following commit (built with gcc-7): > >> > >> commit: 2580d6b795e25879c825a0891cf67390f665b11f ("init, tracing: Have printk come through the trace events for initcall_debug") > >> url: https://github.com/0day-ci/linux/commits/Steven-Rostedt/init-tracing/20180407-130743 > >> > >> > >> in testcase: boot > >> > >> on test machine: qemu-system-x86_64 -enable-kvm -cpu Nehalem -smp 2 -m 512M > >> > >> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): > >> > >> > >> +------------------------------------------------------------------+------------+------------+ > >> | | ecf6709d07 | 2580d6b795 | > >> +------------------------------------------------------------------+------------+------------+ > >> | boot_successes | 0 | 0 | > >> | boot_failures | 8 | 8 | > >> | invoked_oom-killer:gfp_mask=0x | 8 | | > >> | Mem-Info | 8 | | > >> | Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 8 | | > >> | BUG:kernel_reboot-without-warning_in_boot_stage | 0 | 8 | > >> +------------------------------------------------------------------+------------+------------+ > > > >What does this mean? > > It means BUG:BUG:kernel_reboot-without-warning_in_boot_stage occurred 8 times > in boot tests for commit 2580d6b795, while 0 time for its parent ecf6709d07. I don't have a commit 2580d6b795. The commit with the title "init, tracing: Have printk come through the trace events for initcall_debug" is 4e37958d1288ce. linux-next doesn't have that commit sha1 either. > > > > >> > >> > >> > >> [ 0.000000] RAMDISK: [mem 0x1b7e2000-0x1ffcffff] > >> [ 0.000000] ACPI: Early table checksum verification disabled > >> [ 0.000000] ACPI: RSDP 0x00000000000F6860 000014 (v00 BOCHS ) > >> [ 0.000000] ACPI: RSDT 0x000000001FFE1628 000030 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) > >> [ 0.000000] ACPI: FACP 0x000000001FFE147C 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) > >> BUG: kernel reboot-without-warning in boot stage > >> > >> Elapsed time: 10 > >> > >> #!/bin/bash > >> > >> > >> > >> To reproduce: > >> > >> 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 > >> > > > >The config boots fine for me. But I don't have the setup to run the > >above and get it to work, nor the time to figure out why it doesn't > >work. > > Could you paste your failure log here, we can see if there is something we can help. I tried it on a more up-to-date box, after checking out my commit with the title you say is an error. I compiled your config with gcc (GCC) 7.3.1 20180130 (Red Hat 7.3.1-2), and ran the above (which did work). It ended after it got to a login prompt. --- [..] [ 10.588029] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' [ 10.589363] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 [ 10.590385] cfg80211: failed to load regulatory.db [ 10.610002] Freeing unused kernel memory: 1980K [ 10.610533] Write protecting the kernel read-only data: 49152k [ 10.615728] Freeing unused kernel memory: 2028K [ 10.620754] Freeing unused kernel memory: 464K INIT: version 2.88 booting /etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: not found Please wait: booting... [ 10.676861] rc (151) used greatest stack depth: 27848 bytes left Starting udev [ 10.750281] udevd[175]: starting version 3.1.5 [ 10.759923] udevd (175) used greatest stack depth: 27696 bytes left [ 11.129999] udevadm (178) used greatest stack depth: 26696 bytes left Populating dev cache INIT: Entering runlevel: 5 Configuring network interfaces... done. Starting syslogd/klogd: done Poky (Yocto Project Reference Distro) 2.1 qemux86-64 /dev/ttyS0 qemux86-64 login: --- What am I suppose to see? -- Steve
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