'hint' will be NULL if we're looking up before adding anything
to the IDR.
Signed-off-by: Sasha Levin <[email protected]>
---
include/linux/idr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/idr.h b/include/linux/idr.h
index aed2a0c..a6f38b5 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -113,7 +113,7 @@ static inline void *idr_find(struct idr *idr, int id)
{
struct idr_layer *hint = rcu_dereference_raw(idr->hint);
- if ((id & ~IDR_MASK) == hint->prefix)
+ if (hint && (id & ~IDR_MASK) == hint->prefix)
return rcu_dereference_raw(hint->ary[id & IDR_MASK]);
return idr_find_slowpath(idr, id);
--
1.8.1.2
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