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sched/irq: Fix array overrun in coverity check

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Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao
2022-04-05 14:57:47 +08:00
committed by Alan Carvalho de Assis
parent aed5dadc3d
commit 51ffa3edb0
1 changed files with 12 additions and 6 deletions
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sched/irq/irq_dispatch.c
+12 -6
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@@ -39,6 +39,12 @@
* Pre-processor Definitions * Pre-processor Definitions
****************************************************************************/ ****************************************************************************/
#ifdef CONFIG_ARCH_MINIMAL_VECTORTABLE
# define NUSER_IRQS CONFIG_ARCH_NUSER_INTERRUPTS
#else
# define NUSER_IRQS NR_IRQS
#endif
/* INCR_COUNT - Increment the count of interrupts taken on this IRQ number */ /* INCR_COUNT - Increment the count of interrupts taken on this IRQ number */
#ifndef CONFIG_SCHED_IRQMONITOR #ifndef CONFIG_SCHED_IRQMONITOR
@@ -81,9 +87,13 @@
vector(irq, context, arg); \ vector(irq, context, arg); \
elapsed = up_perf_gettime() - start; \ elapsed = up_perf_gettime() - start; \
up_perf_convert(elapsed, &delta); \ up_perf_convert(elapsed, &delta); \
if (delta.tv_nsec > g_irqvector[ndx].time) \ if (ndx < NUSER_IRQS) \
{ \ { \
g_irqvector[ndx].time = delta.tv_nsec; \ INCR_COUNT(ndx); \
if (delta.tv_nsec > g_irqvector[ndx].time) \
{ \
g_irqvector[ndx].time = delta.tv_nsec; \
} \
} \ } \
if (CONFIG_SCHED_CRITMONITOR_MAXTIME_IRQ > 0 && \ if (CONFIG_SCHED_CRITMONITOR_MAXTIME_IRQ > 0 && \
elapsed > CONFIG_SCHED_CRITMONITOR_MAXTIME_IRQ) \ elapsed > CONFIG_SCHED_CRITMONITOR_MAXTIME_IRQ) \
@@ -130,8 +140,6 @@ void irq_dispatch(int irq, FAR void *context)
vector = g_irqvector[ndx].handler; vector = g_irqvector[ndx].handler;
arg = g_irqvector[ndx].arg; arg = g_irqvector[ndx].arg;
} }
INCR_COUNT(ndx);
} }
#else #else
if (g_irqvector[ndx].handler) if (g_irqvector[ndx].handler)
@@ -139,8 +147,6 @@ void irq_dispatch(int irq, FAR void *context)
vector = g_irqvector[ndx].handler; vector = g_irqvector[ndx].handler;
arg = g_irqvector[ndx].arg; arg = g_irqvector[ndx].arg;
} }
INCR_COUNT(ndx);
#endif #endif
} }
#endif #endif