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-rw-r--r--kernel/irq/proc.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index ddde0ef9ccd..b4f1674fca7 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -27,6 +27,10 @@ static int irq_affinity_read_proc(char *page, char **start, off_t off,
return len;
}
+#ifndef is_affinity_mask_valid
+#define is_affinity_mask_valid(val) 1
+#endif
+
int no_irq_affinity;
static int irq_affinity_write_proc(struct file *file, const char __user *buffer,
unsigned long count, void *data)
@@ -42,6 +46,9 @@ static int irq_affinity_write_proc(struct file *file, const char __user *buffer,
if (err)
return err;
+ if (!is_affinity_mask_valid(new_value))
+ return -EINVAL;
+
/*
* Do not allow disabling IRQs completely - it's a too easy
* way to make the system unusable accidentally :-) At least