Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Subject: Re: [LKP] [btrfs] 70d28b0e4f:
 BUG:kernel_reboot-without-warning_in_early-boot_stage,
 last_printk:Probing_EDD(edd=off_to_disable)...ok
To:     Rong Chen <rong.a.chen@intel.com>, dsterba@suse.cz,
        Nikolay Borisov <nborisov@suse.com>, lkp@01.org,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Yoon Jungyeon <jungyeon@gatech.edu>,
        Johannes Thumshirn <jthumshirn@suse.de>,
        LKML <linux-kernel@vger.kernel.org>
References: <20190401132427.GC9217@shao2-debian>
 <f3cef716-a1e3-2e84-0133-9a9c3fad2a74@suse.com>
 <7a6c000e-c523-382a-d13c-790809260e4e@intel.com>
 <5b82b026-bdd7-f781-e661-f1afdc9cb97b@suse.de>
 <23823210-1951-0492-1755-6263ccf388fa@intel.com>
 <20190401154044.GX29086@suse.cz>
 <d1f57263-277a-d696-2fc2-51c62af6844f@intel.com>
From:   Qu Wenruo <wqu@suse.de>
Openpgp: preference=signencrypt
Autocrypt: addr=wqu@suse.de; prefer-encrypt=mutual; keydata=
 mQENBFnVga8BCACyhFP3ExcTIuB73jDIBA/vSoYcTyysFQzPvez64TUSCv1SgXEByR7fju3o
 8RfaWuHCnkkea5luuTZMqfgTXrun2dqNVYDNOV6RIVrc4YuG20yhC1epnV55fJCThqij0MRL
 1NxPKXIlEdHvN0Kov3CtWA+R1iNN0RCeVun7rmOrrjBK573aWC5sgP7YsBOLK79H3tmUtz6b
 9Imuj0ZyEsa76Xg9PX9Hn2myKj1hfWGS+5og9Va4hrwQC8ipjXik6NKR5GDV+hOZkktU81G5
 gkQtGB9jOAYRs86QG/b7PtIlbd3+pppT0gaS+wvwMs8cuNG+Pu6KO1oC4jgdseFLu7NpABEB
 AAG0F1F1IFdlbnJ1byA8d3F1QHN1c2UuZGU+iQFUBBMBCAA+AhsDBQsJCAcCBhUICQoLAgQW
 AgMBAh4BAheAFiEELd9y5aWlW6idqkLhwj2R86El/qgFAlnVgp0FCQlmAm4ACgkQwj2R86El
 /qilmgf/cUq9kFQo577ku5gc6rFpVg68ublBwjYpwjw0b//xo+Wo1wm+RRbUGs+djSZAqw12
 D4F3r0mBTI7abUCNWAbFkYZSAIFVi0DMkjypIVS7PSaEt04rM9VBTToE+YqU6WENeJ57R2p2
 +hI0wZrBwxObdsdaOtxWtsp3bmhIbdqxSKrtXuRawy4KnQYcLuGzOce9okdlbAE0W3KHm1gQ
 oNAe6FX8nC9qo14m8LqEbThYH+qj4iCMlN8HIfbSx4F3e7nHZ+UAMW+E/lnMRkIB9Df+JyVd
 /NlXzIjZAggcWsqpx6D4wyAuexKWkiGQeUeArUNihAwXjmyqWPGmjVyIh+oC6LkBDQRZ1YGv
 AQgAqlPrYeBLMv3PAZ75YhQIwH6c4SNcB++hQ9TCT5gIQNw51+SQzkXIGgmzxMIS49cZcE4K
 Xk/kHw5hieQeQZa60BWVRNXwoRI4ib8okgDuMkD5Kz1WEyO149+BZ7HD4/yK0VFJGuvDJR8T
 7RZwB69uVSLjkuNZZmCmDcDzS0c/SJOg5nkxt1iTtgUETb1wNKV6yR9XzRkrEW/qShChyrS9
 fNN8e9c0MQsC4fsyz9Ylx1TOY/IF/c6rqYoEEfwnpdlz0uOM1nA1vK+wdKtXluCa79MdfaeD
 /dt76Kp/o6CAKLLcjU1Iwnkq1HSrYfY3HZWpvV9g84gPwxwxX0uXquHxLwARAQABiQE8BBgB
 CAAmFiEELd9y5aWlW6idqkLhwj2R86El/qgFAlnVga8CGwwFCQPCZwAACgkQwj2R86El/qgN
 8Qf+M0vM2Idwm5txZZSs+/kSgcPxEwYmxUinnUJGyc0ZWYQXPl0cBetZon9El0naijGzNWvf
 HxIPB+ZFehk6Otgc78p1a3/xck/s1myFRLrmbbTJNoFiyL25ljcq0J8z5Zp4yuABL2RiLdaZ
 Pt/jfwjBHwGR+QKp6dD2qMrUWf9b7TFzYDMZXzZ2/eoIgtyjEelNBPrIgOFe24iKMjaGjd97
 fJuRcBMHdhUAxvXQF1oRtd83JvYJ5OtwTd8MgkEfl+fo7HwWkuHbzc70L4fFKv2BowqFdaHy
 mId1ijGPGr46tuZ5a4cw/zbaPYx6fJ4sK9tSv/6V1QPNUdqml6hm6pfs6A==
Message-ID: <9a3650ed-b456-a29d-20ae-16de384146ef@suse.de>
Date:   Tue, 2 Apr 2019 11:30:10 +0800
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101
 Thunderbird/60.5.3
MIME-Version: 1.0
In-Reply-To: <d1f57263-277a-d696-2fc2-51c62af6844f@intel.com>
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


On 2019/4/2 上午11:14, Rong Chen wrote:
> 
> On 4/1/19 11:40 PM, David Sterba wrote:
>> On Mon, Apr 01, 2019 at 11:02:37PM +0800,  Chen, Rong A  wrote:
>>> On 4/1/2019 10:29 PM, Qu Wenruo wrote:
>>>> On 2019/4/1 下午10:02,  Chen, Rong A  wrote:
>>>>> On 4/1/2019 9:28 PM, Nikolay Borisov wrote:
>>>>>> On 1.04.19 г. 16:24 ч., kernel test robot wrote:
>>>>>>> FYI, we noticed the following commit (built with gcc-7):
>>>>>>>
>>>>>>> commit: 70d28b0e4f8ed2d38571e7b1f9bec7f321a53102 ("btrfs:
>>>>>>> tree-checker: Verify dev item")
>>>>>>> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git
>>>>>>> master
>>>>>>>
>>>>>>> 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):
>>>>>>>
>>>>>>>
>>>>>>> +--------------------------------------------------------------------------------------------------------+------------+------------+
>>>>>>>
>>>>>>>
>>>>>>> |
>>>>>>> | 36b9d2bc69 | 70d28b0e4f |
>>>>>>> +--------------------------------------------------------------------------------------------------------+------------+------------+
>>>>>>>
>>>>>>>
>>>>>>> |
>>>>>>> boot_successes
>>>>>>> | 14         | 0          |
>>>>>>> |
>>>>>>> boot_failures
>>>>>>> | 2          | 14         |
>>>>>>> |
>>>>>>> IP-Config:Auto-configuration_of_network_failed
>>>>>>> | 2          |            |
>>>>>>> |
>>>>>>> BUG:kernel_reboot-without-warning_in_early-boot_stage,last_printk:Probing_EDD(edd=off_to_disable)...ok
>>>>>>>
>>>>>>> | 0          | 14         |
>>>>>>> +--------------------------------------------------------------------------------------------------------+------------+------------+
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> early console in setup code
>>>>>>> Probing EDD (edd=off to disable)... ok
>>>>>>> BUG: kernel reboot-without-warning in early-boot stage, last printk:
>>>>>>> Probing EDD (edd=off to disable)... ok
>>>>>>> Linux version 5.0.0-rc8-00196-g70d28b0 #1
>>>>>>> Command line: ip=::::vm-snb-quantal-x86_64-1415::dhcp root=/dev/ram0
>>>>>>> user=lkp
>>>>>>> job=/lkp/jobs/scheduled/vm-snb-quantal-x86_64-1415/trinity-300s-quantal-core-x86_64-2018-11-09.cgz-70d28b0-20190330-29362-1y6g0qb-2.yaml
>>>>>>>
>>>>>>> ARCH=x86_64 kconfig=x86_64-randconfig-s5-03231928
>>>>>>> branch=linux-devel/devel-hourly-2019032317
>>>>>>> commit=70d28b0e4f8ed2d38571e7b1f9bec7f321a53102
>>>>>>> BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s5-03231928/gcc-7/70d28b0e4f8ed2d38571e7b1f9bec7f321a53102/vmlinuz-5.0.0-rc8-00196-g70d28b0
>>>>>>>
>>>>>>> max_uptime=1500
>>>>>>> RESULT_ROOT=/result/trinity/300s/vm-snb-quantal-x86_64/quantal-core-x86_64-2018-11-09.cgz/x86_64-randconfig-s5-03231928/gcc-7/70d28b0e4f8ed2d38571e7b1f9bec7f321a53102/8
>>>>>>>
>>>>>>> LKP_SERVER=inn debug apic=debug sysrq_always_enabled
>>>>>>> rcupdate.rcu_cpu_stall_timeout=100 net.ifnames=0 printk.devkmsg=on
>>>>>>> panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic
>>>>>>> load_ramdisk=2 prompt_ramdisk=0 drbd.minor_count=8
>>>>>>> systemd.log_level=err ignore_loglevel console=tty0
>>>>>>> earlyprintk=ttyS0,115200 console=ttyS0,115200 vga=normal rw
>>>>>>> rcuperf.shutdown=0
>>>>>>>
>>>>>> Can this report be made useful by actually including output from
>>>>>> serial
>>>>>> console? For example possible bug-ons or whatnot? dmesg.xz just
>>>>>> contains
>>>>>> qemu's command line + some metadata about the test and :
>>>>>>
>>>>>> "BUG: kernel reboot-without-warning in early-boot stage, last printk:
>>>>>> Probing EDD (edd=off to disable)... ok"
>>>>>>
>>>>>> At least a stack trace would have been useful.
>>>>>>
>>>>>> <snip>
>>>>> Hi,
>>>>>
>>>>> We usually use the tool ("bin/lkp qemu -k <bzImage> job-script") to
>>>>> reproduce it.  It seems no stack trace in the result:
>>>> So there is no regression at that commit right?
>>>>
>>>> Just some false alert?
>>>
>>> Hi,
>>>
>>> I think there's a regression, it stopped in the early-boot stage .
>> Can you please provide any logs that would point at btrfs? If the module
>> is loaded or built-in started, there's a line about that. Besides that
>> it's preceded by messages from other subsystems' initialization.
> 
> 
> Hi,
> 
> CONFIG_BTRFS_FS and CONFIG_BTRFS_FS_REF_VERIFY is enabled in the kconfig.
> I disabled them for the experiment, and the new kernel is bootable. I
> don't have more logs to prove it.
> 
> $ grep BTRFS config-5.0.0-rc8-00196-g70d28b0
> CONFIG_BTRFS_FS=y
> # CONFIG_BTRFS_FS_POSIX_ACL is not set
> # CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
> # CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
> # CONFIG_BTRFS_DEBUG is not set
> # CONFIG_BTRFS_ASSERT is not set
> CONFIG_BTRFS_FS_REF_VERIFY=y

That's strange, ref verify part is pretty far from the tree checker code.

Would you please try to compile btrfs as module and then insert the
module to get some valid kernel messages?

Thanks,
Qu

> 
> 
> Best Regards,
> Rong Chen
> 
> 
>> _______________________________________________
>> LKP mailing list
>> LKP@lists.01.org
>> https://lists.01.org/mailman/listinfo/lkp