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Groups > linux.kernel > #1445201

Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes to /dev/kmsg

From Borislav Petkov <bp@alien8.de>
Newsgroups linux.kernel
Subject Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes to /dev/kmsg
Date 2016-07-18 06:50 +0200
Message-ID <rW8Fb-1zz-5@gated-at.bofh.it> (permalink)
References (2 earlier) <rV4Nj-3rj-3@gated-at.bofh.it> <rVaJ4-6Xs-21@gated-at.bofh.it> <rVvku-2JU-19@gated-at.bofh.it> <rVN7I-5gm-3@gated-at.bofh.it> <rW6k1-bI-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Mon, Jul 18, 2016 at 10:18:09AM +0800, Dave Young wrote:
> I would say avoiding ratelimit during boot make no much sense. Userspace can not
> write to /dev/kmsg when system_state == SYSTEM_BOOTING because init process
> has not run yet.

You're right - kernel_init() sets SYSTEM_RUNNING before running the init
process. I probably should kill all that logic in the second patch.

> I means to set printk.devkmsg=off by default, userspace can set it to
> on by sysctl.

That can't happen: DEVKMSG_LOG_MASK_LOCK.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--

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Thread

Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Dave Young <dyoung@redhat.com> - 2016-07-15 08:30 +0200
  Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Borislav Petkov <bp@alien8.de> - 2016-07-15 14:50 +0200
    Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Dave Young <dyoung@redhat.com> - 2016-07-16 12:50 +0200
      Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Borislav Petkov <bp@alien8.de> - 2016-07-17 07:50 +0200
        Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Dave Young <dyoung@redhat.com> - 2016-07-18 04:20 +0200
          Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Borislav Petkov <bp@alien8.de> - 2016-07-18 06:50 +0200
            Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Dave Young <dyoung@redhat.com> - 2016-07-18 07:30 +0200
              Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Borislav Petkov <bp@alien8.de> - 2016-07-18 09:30 +0200
                Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Dave Young <dyoung@redhat.com> - 2016-07-18 09:40 +0200
                Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Borislav Petkov <bp@alien8.de> - 2016-07-18 10:10 +0200
                Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Dave Young <dyoung@redhat.com> - 2016-07-18 10:20 +0200
                Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Borislav Petkov <bp@alien8.de> - 2016-07-18 11:10 +0200
                Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Dave Young <dyoung@redhat.com> - 2016-07-19 02:40 +0200
                Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Borislav Petkov <bp@alien8.de> - 2016-07-19 08:50 +0200
                Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Dave Young <dyoung@redhat.com> - 2016-07-19 09:10 +0200
                Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes  to /dev/kmsg Steven Rostedt <rostedt@goodmis.org> - 2016-07-25 17:20 +0200

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