Messages in this thread | | | Date | Mon, 20 Apr 2015 13:17:25 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] __bitmap_parselist: fix bug in empty string handling |
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On Fri, 17 Apr 2015 14:00:04 -0400 Chris Metcalf <cmetcalf@ezchip.com> wrote:
> bitmap_parselist("", &mask, nmaskbits) will erroneously set bit > zero in the mask. The same bug is visible in cpumask_parselist() > since it is layered on top of the bitmask code, e.g. if you boot with > "isolcpus=", you will actually end up with cpu zero isolated. > > The bug was introduced in commit 4b060420a596 ("bitmap, irq: add > smp_affinity_list interface to /proc/irq") when bitmap_parselist() > was generalized to support userspace as well as kernelspace. > > Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com> > Cc: stable@vger.kernel.org
I don't think we need to backport a fix for a 4 year old bug which has very minor consequences. Am I wrong?
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