[lkml]   [2009]   [Nov]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: scheduling while atomic acpi_idle_enter_bm
On Mon, Nov 2, 2009 at 7:02 PM, Len Brown <> wrote:
>> > I get this when modprobing some module I am working on. I figured it
>> > was the module's fault but the EIP points to something else so I am
>> > not sure. I get the following repeating about 4 times on 2.6.32-rc5:
>> you can get this if your own code leaves interrupts disabled in a
>> kernel thread and then lets the cpu go idle...
> Unclear.
> acpi_enter_idle_bm() assumes that it is entered with irqs enabled,
> and so it we unconditionally disables IRQs.
> Then we unconditionally re-enable them.
> The problem seems to be that right after we enable them,
> we find that they are actually disabled, perhaps as
> a side-effect of SMM.
> Is your machine a Dell, per chance?


> Please test the patches in this bug report:

In my case it was as Arjan pointed out and I've fixed it in my driver.
Sorry for not reporting back and thanks for your review.


 \ /
  Last update: 2009-11-03 04:13    [W:0.031 / U:5.984 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site