Smatch complains that there is a buffer overflow here because we
recently changed interrupt[] from having "NR_VECTORS -
FIRST_EXTERNAL_VECTOR" elements to now have "FIRST_SYSTEM_VECTOR -
FIRST_EXTERNAL_VECTOR" elements.
Fixes: 8c66877ee65e ('x86: Avoid building unused IRQ entry stubs')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
I can't actually compile this code, and I'm an lguest newbie. Please
review this one carefully.
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index aae9413..c1c1544 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -841,7 +841,7 @@ static void __init lguest_init_IRQ(void)
{
unsigned int i;
- for (i = FIRST_EXTERNAL_VECTOR; i < NR_VECTORS; i++) {
+ for (i = FIRST_EXTERNAL_VECTOR; i < FIRST_SYSTEM_VECTOR; i++) {
/* Some systems map "vectors" to interrupts weirdly. Not us! */
__this_cpu_write(vector_irq[i], i - FIRST_EXTERNAL_VECTOR);
if (i != SYSCALL_VECTOR)
--
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