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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2017-08-19 12:57:51 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-20 10:49:05 +0200 |
| commit | 8fbbe2d7cc478d1544f41f2271787c993c23a4f6 (patch) | |
| tree | 5216664c8a0de1fab6a27d5400042efc132d6901 /kernel/irq | |
| parent | e8f241893dfbbebe2813c01eac54f263e6a5e59c (diff) | |
| download | linux-8fbbe2d7cc478d1544f41f2271787c993c23a4f6.tar.bz2 | |
genirq/ipi: Fixup checks against nr_cpu_ids
Valid CPU ids are [0, nr_cpu_ids-1] inclusive.
Fixes: 3b8e29a82dd1 ("genirq: Implement ipi_send_mask/single()")
Fixes: f9bce791ae2a ("genirq: Add a new function to get IPI reverse mapping")
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20170819095751.GB27864@avx2
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/ipi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/irq/ipi.c b/kernel/irq/ipi.c index 1a9abc1c8ea0..259a22aa9934 100644 --- a/kernel/irq/ipi.c +++ b/kernel/irq/ipi.c @@ -165,7 +165,7 @@ irq_hw_number_t ipi_get_hwirq(unsigned int irq, unsigned int cpu) struct irq_data *data = irq_get_irq_data(irq); struct cpumask *ipimask = data ? irq_data_get_affinity_mask(data) : NULL; - if (!data || !ipimask || cpu > nr_cpu_ids) + if (!data || !ipimask || cpu >= nr_cpu_ids) return INVALID_HWIRQ; if (!cpumask_test_cpu(cpu, ipimask)) @@ -195,7 +195,7 @@ static int ipi_send_verify(struct irq_chip *chip, struct irq_data *data, if (!chip->ipi_send_single && !chip->ipi_send_mask) return -EINVAL; - if (cpu > nr_cpu_ids) + if (cpu >= nr_cpu_ids) return -EINVAL; if (dest) { |