Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 12 Sep 2006 20:21:41 +0000 | From | Frederik Deweerdt <> | Subject | Re: lockdep warning in check_flags() |
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On Tue, Sep 12, 2006 at 06:54:48PM +0200, Ingo Molnar wrote: > > * Frederik Deweerdt <deweerdt@free.fr> wrote: > > > On Mon, Sep 11, 2006 at 07:43:35AM +0200, Ingo Molnar wrote: > > > > > > * Frederik Deweerdt <deweerdt@free.fr> wrote: > > > > > > > Lockdep issues the following warning: > > > > > > > > [ 16.835268] Freeing unused kernel memory: 260k freed > > > > [ 16.842715] Write protecting the kernel read-only data: 432k > > > > [ 17.796518] BUG: warning at kernel/lockdep.c:2359/check_flags() > > > > > > this warning means that the "soft" and "hard" hardirqs-disabled state > > > got out of sync: the irqtrace tracking code thinks that hardirqs are > > > disabled, while in reality they are enabled. The thing to watch for are > > > new "stii" instructions in entry.S (and other assembly code), without a > > > matching TRACE_HARDIRQS_ON call. [Another, rarer possiblity is NMI code > > > saving/restoring interrupts - do you have NMIs enabled? (are there any > > > NMI counts in /proc/interrupts?)] > > NMIs were disabled. But I've just booted -mm2 and the warning went away. > > Could this be related to the recent pda changes? > > yeah, it could be related to the fix below. Can you confirm that by > applying this to your -mm1 tree the message goes away? > It does, thanks Ingo. Frederik - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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