Messages in this thread | | | Date | Tue, 27 Apr 2010 17:32:27 +1000 | From | Stephen Rothwell <> | Subject | Re: [PATCH] lockdep: Fix redundant_hardirqs_on incremented with irqs enabled |
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Hi Frederic,
On Thu, 15 Apr 2010 15:37:50 +0200 Frederic Weisbecker <fweisbec@gmail.com> wrote: > > When a path restore the flags while irqs are already enabled, we > update the per cpu var redundant_hardirqs_on in a racy fashion > and debug_atomic_inc() warns about this situation. > > In this particular case, we need to explictly disable the irqs before > updating this stat var in order to update it safely. > > Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> > Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> > Cc: Peter Zijlstra <peterz@infradead.org> > Cc: David Miller <davem@davemloft.net> > Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> > --- > kernel/lockdep.c | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-)
Ping? Any movement on this?
-- Cheers, Stephen Rothwell sfr@canb.auug.org.au http://www.canb.auug.org.au/~sfr/ [unhandled content-type:application/pgp-signature] | |