Re: [Intel-wired-lan] [e1000_netpoll] BUG: sleeping function called from invalid context at kernel/irq/manage.c:110

From	Francois Romieu <romieu@fr.zoreil.com>
Newsgroups	linux.kernel
Subject	Re: [Intel-wired-lan] [e1000_netpoll] BUG: sleeping function called from invalid context at kernel/irq/manage.c:110
Date	2016-07-29 01:30 +0200
Message-ID	<s02Ux-4JT-29@gated-at.bofh.it> (permalink)
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Eric Dumazet <eric.dumazet@gmail.com> :
[...]
> I would prefer having a definitive advice from Thomas Gleixner and/or
> others if disable_irq() is forbidden from IRQ path.
> 
> As I said, about all netpoll() methods in net drivers use disable_irq()
> so a lot of patches would be needed.

s/about all/many/

There has been a WARN_ONCE(!irqs_disabled() in netpoll_send_skb_on_dev for
quite some time now but it's apparently screened by too many tests to be
effective. :o/

-- 
Ueimor

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[e1000_netpoll] BUG: sleeping function called from invalid context  at kernel/irq/manage.c:110 Fengguang Wu <fengguang.wu@intel.com> - 2016-07-26 06:00 +0200
  Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Eric Dumazet <eric.dumazet@gmail.com> - 2016-07-26 11:20 +0200
    Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Thomas Gleixner <tglx@linutronix.de> - 2016-07-26 12:00 +0200
      Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Thomas Gleixner <tglx@linutronix.de> - 2016-07-28 09:50 +0200
        Re: [e1000_netpoll] BUG: sleeping function called from invalid context at kernel/irq/manage.c:110 Valdis.Kletnieks@vt.edu - 2016-07-28 11:50 +0200
    Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Fengguang Wu <fengguang.wu@intel.com> - 2016-07-26 17:40 +0200
      Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Eric Dumazet <eric.dumazet@gmail.com> - 2016-07-26 18:30 +0200
        Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Fengguang Wu <fengguang.wu@intel.com> - 2016-07-27 17:10 +0200
          Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Eric Dumazet <eric.dumazet@gmail.com> - 2016-07-27 21:00 +0200
    Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Jeff Kirsher <jeffrey.t.kirsher@intel.com> - 2016-07-27 23:40 +0200
      Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Eric Dumazet <eric.dumazet@gmail.com> - 2016-07-28 07:50 +0200
        Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Sabrina Dubroca <sd@queasysnail.net> - 2016-07-28 12:30 +0200
          Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Thomas Gleixner <tglx@linutronix.de> - 2016-07-28 14:30 +0200
          Re: [e1000_netpoll] BUG: sleeping function called from invalid  context at kernel/irq/manage.c:110 Fengguang Wu <fengguang.wu@intel.com> - 2016-07-28 15:40 +0200
        Re: [Intel-wired-lan] [e1000_netpoll] BUG: sleeping function called  from invalid context at kernel/irq/manage.c:110 Francois Romieu <romieu@fr.zoreil.com> - 2016-07-29 01:30 +0200

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