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Re: [lkp] [mm] e7c1db75fe: BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c

From Sudeep Holla <sudeep.holla@arm.com>
Newsgroups linux.kernel
Subject Re: [lkp] [mm] e7c1db75fe: BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c
Date 2016-11-29 18:30 +0100
Message-ID <sIUoa-311-41@gated-at.bofh.it> (permalink)
References <sIjHX-4h4-17@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Sun, Nov 27, 2016 at 6:16 PM, kernel test robot
<xiaolong.ye@intel.com> wrote:
>
> FYI, we noticed the following commit:
>
> commit e7c1db75fed821a961ce1ca2b602b08e75de0cd8 ("mm: Prevent __alloc_pages_nodemask() RCU CPU stall warnings")
> https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next
>
> in testcase: boot
>
> on test machine: qemu-system-x86_64 -enable-kvm -cpu Nehalem -smp 2 -m 1G
>
> caused below changes:
>
[...]

> [    8.953192] BUG: sleeping function called from invalid context at mm/page_alloc.c:3746
> [    8.956353] in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: swapper/0

I am observing similar BUG/backtrace even on ARM64 platform.

--
Regards,
Sudeep

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Re: [lkp] [mm] e7c1db75fe: BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c Sudeep Holla <sudeep.holla@arm.com> - 2016-11-29 18:30 +0100
  Re: [lkp] [mm] e7c1db75fe:  BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-29 20:20 +0100
    Re: [lkp] [mm] e7c1db75fe:  BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c Ye Xiaolong <xiaolong.ye@intel.com> - 2016-11-30 03:30 +0100
    Re: [lkp] [mm] e7c1db75fe:  BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c Ye Xiaolong <xiaolong.ye@intel.com> - 2016-11-30 06:50 +0100
      Re: [LKP] [lkp] [mm] e7c1db75fe:  BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c Fengguang Wu <fengguang.wu@intel.com> - 2016-11-30 07:30 +0100
    Re: [lkp] [mm] e7c1db75fe:  BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c Michal Hocko <mhocko@kernel.org> - 2016-11-30 08:20 +0100
      Re: [lkp] [mm] e7c1db75fe:  BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-30 08:50 +0100
        Re: [lkp] [mm] e7c1db75fe:  BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c Sudeep Holla <sudeep.holla@arm.com> - 2016-11-30 13:30 +0100

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