On Thu, Jan 19, 2012 at 5:38 PM, Steven Rostedt [off-list ref] wrote:

On Thu, 2012-01-19 at 17:16 +0100, John Kacur wrote:

quoted

I'm testing v3.0.14-rt32-rc1, and it greatly reduced the number of
these, but I still got one during boot.

[   11.938649] BUG: sleeping function called from invalid context at
/home/jkacur/rt.linux.git/kernel/rtmutex.c:645
[   11.938651] in_atomic(): 1, irqs_disabled(): 1, pid: 168, name: irq/9-acpi
[   11.938653] 1 lock held by irq/9-acpi/168:
[   11.938653]  #0:  (acpi_gbl_gpe_lock){......}, at:
[<ffffffff8123881d>] acpi_ev_gpe_detect+0x31/0x110

Could you test 3.2-rt. If that has the issue then we know we have more
to fix. If not, we know I missed a patch.

I tested with v3.2-rt10 and the issue is not there.

I also examined your patches and couldn't find anything wrong with
them, and for larks tried applying
cpumask-disable-offstack-on-rt.patch from v3.2-rt10
all to no avail, the problem is still there.

Thanks
John
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