linux-kernel - Re: [printk] b031a684bf: INFO:rcu_tasks_detected_stalls_on

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Message-ID: <YAuNmjUDhNbiYn0b@jagdpanzerIV.localdomain>
Date:   Sat, 23 Jan 2021 11:44:42 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:     kernel test robot <oliver.sang@...el.com>
Cc:     John Ogness <john.ogness@...utronix.de>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        lkp@...el.com, zhengjun.xing@...ux.intel.com
Subject: Re: [printk]  b031a684bf: INFO:rcu_tasks_detected_stalls_on_tasks

On (21/01/22 16:13), kernel test robot wrote:
[..]
> 
> +------------------------------------------------+------------+------------+
> |                                                | 6b916706f8 | b031a684bf |
> +------------------------------------------------+------------+------------+
> | boot_successes                                 | 66         | 18         |
> | boot_failures                                  | 2          | 26         |
> | INFO:rcu_sched_detected_stalls_on_CPUs/tasks   | 1          |            |
> | RIP:enqueue_hrtimer                            | 1          |            |
> | RIP:__memset                                   | 1          |            |
> | RIP:clear_page_rep                             | 2          | 2          |
> | BUG:kernel_hang_in_boot_stage                  | 2          |            |
> | INFO:rcu_sched_self-detected_stall_on_CPU      | 1          | 4          |
> | INFO:rcu_tasks_detected_stalls_on_tasks        | 0          | 22         |
> | RIP:kernel_init_free_pages                     | 0          | 1          |
> | IP-Config:Auto-configuration_of_network_failed | 0          | 3          |
> | RIP:zone_page_state                            | 0          | 1          |
> +------------------------------------------------+------------+------------+


A side note:

> # printk and dmesg options
> #
> CONFIG_PRINTK_TIME=y
> # CONFIG_PRINTK_CALLER is not set
> CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
> CONFIG_CONSOLE_LOGLEVEL_QUIET=4


Could you please keep CONFIG_PRINTK_CALLER enabled at all times?

	-ss