diff options
Diffstat (limited to 'arch/x86_64/kernel/irq.c')
| -rw-r--r-- | arch/x86_64/kernel/irq.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c index 59518d4d435..bfa82f52a5c 100644 --- a/arch/x86_64/kernel/irq.c +++ b/arch/x86_64/kernel/irq.c @@ -115,8 +115,14 @@ skip: */ asmlinkage unsigned int do_IRQ(struct pt_regs *regs) { - /* high bits used in ret_from_ code */ - unsigned irq = regs->orig_rax & 0xff; + /* high bit used in ret_from_ code */ + unsigned irq = ~regs->orig_rax; + + if (unlikely(irq >= NR_IRQS)) { + printk(KERN_EMERG "%s: cannot handle IRQ %d\n", + __FUNCTION__, irq); + BUG(); + } exit_idle(); irq_enter(); |