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-rw-r--r--kernel/events/uprobes.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index f0d0453..604930b 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -610,6 +610,9 @@ __copy_insn(struct address_space *mapping, struct vm_area_struct *vma, char *ins
if (!filp)
return -EINVAL;
+ if (!mapping->a_ops->readpage)
+ return -EIO;
+
idx = (unsigned long)(offset >> PAGE_CACHE_SHIFT);
off1 = offset &= ~PAGE_MASK;
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