On Wed, Dec 07, 2011 at 06:47:58PM -0200, Philipp Dreimann wrote:

No, this was not posted so far. I will try to debug the loop issue
soonish. The outlined idea above only prevents the issue without
knowing what is happening.

I looked at it a bit more and realized that we can replace spinlock
by mutex. This should fix remaining problems here, and hopefully do
not introduce any others. Could you test two attached patches, and
if they do not crash intermediately :-) retest again with
CONFIG_LOCKDEP ?

Thanks
Stanislaw