linux-kernel - [lkp-robot] [llist] bc1a405b00: Kernel_panic-not_syncing:No_working_init

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Date:   Fri, 24 Feb 2017 09:20:10 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Byungchul Park <byungchul.park@....com>
Cc:     peterz@...radead.org, mingo@...nel.org, koverstreet@...gle.com,
        neilb@...e.de, nab@...ux-iscsi.org, viro@...iv.linux.org.uk,
        ying.huang@...el.com, oleg@...hat.com, asias@...hat.com,
        shli@...nel.org, linux-kernel@...r.kernel.org, lkp@...org
Subject: [lkp-robot] [llist]  bc1a405b00:
 Kernel_panic-not_syncing:No_working_init_found


FYI, we noticed the following commit:

commit: bc1a405b009b69c8f86a6741614a503400a01f27 ("llist: Don't reinvent the wheel but use existing llist API")
https://github.com/0day-ci/linux Byungchul-Park/llist-Don-t-reinvent-the-wheel-but-use-existing-llist-API/20170213-124427

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -m 420M

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


+------------------------------------------------+---------------+------------+
|                                                | next-20170210 | bc1a405b00 |
+------------------------------------------------+---------------+------------+
| boot_successes                                 | 2             | 0          |
| boot_failures                                  | 0             | 16         |
| Kernel_panic-not_syncing:No_working_init_found | 0             | 16         |
+------------------------------------------------+---------------+------------+



[    6.339828] Write protecting the kernel read-only data: 20480k
[    6.341283] Freeing unused kernel memory: 1040K
[    6.342591] Freeing unused kernel memory: 336K
[    6.343088] Failed to execute /init (error -26)
[    6.343598] Starting init: /bin/sh exists but couldn't execute it (error -26)
[    6.344335] Kernel panic - not syncing: No working init found.  Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst for guidance.
[    6.345783] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.10.0-rc7-next-20170210-00001-gbc1a405 #17
[    6.346645] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[    6.347642] Call Trace:
[    6.347887]  dump_stack+0x61/0x7e
[    6.348236]  ? rest_init+0x27/0xb9
[    6.348315]  panic+0xd3/0x20a
[    6.348315]  ? rest_init+0xb9/0xb9
[    6.348315]  kernel_init+0xe2/0xe6
[    6.348315]  ret_from_fork+0x2c/0x40
[    6.348315] Kernel Offset: disabled

Elapsed time: 10

initrds=(


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong

View attachment "config-4.10.0-rc7-next-20170210-00001-gbc1a405" of type "text/plain" (121487 bytes)

View attachment "job-script" of type "text/plain" (4018 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (12328 bytes)