From 535a6886798c6a5a94c9ff8dbb0475cd1bf71309 Mon Sep 17 00:00:00 2001 From: Ruchi Kandoi Date: Fri, 7 Mar 2014 12:54:30 -0800 Subject: [PATCH] Power: Add guard condition for maximum wakeup reasons Ensure the array for the wakeup reason IRQs does not overflow. Change-Id: Iddc57a3aeb1888f39d4e7b004164611803a4d37c Signed-off-by: Ruchi Kandoi (cherry picked from commit b5ea40cdfcf38296535f931a7e5e7bf47b6fad7f) --- kernel/power/wakeup_reason.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/power/wakeup_reason.c b/kernel/power/wakeup_reason.c index 35368fb30e90..a5f3bfd6f500 100644 --- a/kernel/power/wakeup_reason.c +++ b/kernel/power/wakeup_reason.c @@ -79,6 +79,13 @@ void log_wakeup_reason(int irq) printk(KERN_INFO "Resume caused by IRQ %d\n", irq); spin_lock(&resume_reason_lock); + if (irq_count == MAX_WAKEUP_REASON_IRQS) { + spin_unlock(&resume_reason_lock); + printk(KERN_WARNING "Resume caused by more than %d IRQs\n", + MAX_WAKEUP_REASON_IRQS); + return; + } + irq_list[irq_count++] = irq; spin_unlock(&resume_reason_lock); } -- 2.11.0