io_uring/rsrc: add lockdep sanity checks
We should hold ->uring_lock while putting nodes with io_put_rsrc_node(),
add a lockdep check for that.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/b50d5f156ac41450029796738c1dfd22a521df7a.1680576071.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/io_uring/rsrc.h b/io_uring/rsrc.h
index 3b9f4c5..cf24c3f 100644
--- a/io_uring/rsrc.h
+++ b/io_uring/rsrc.h
@@ -119,8 +119,10 @@ int io_register_rsrc_update(struct io_ring_ctx *ctx, void __user *arg,
int io_register_rsrc(struct io_ring_ctx *ctx, void __user *arg,
unsigned int size, unsigned int type);
-static inline void io_put_rsrc_node(struct io_rsrc_node *node)
+static inline void io_put_rsrc_node(struct io_ring_ctx *ctx, struct io_rsrc_node *node)
{
+ lockdep_assert_held(&ctx->uring_lock);
+
if (node && !--node->refs)
io_rsrc_node_ref_zero(node);
}
@@ -128,7 +130,7 @@ static inline void io_put_rsrc_node(struct io_rsrc_node *node)
static inline void io_req_put_rsrc_locked(struct io_kiocb *req,
struct io_ring_ctx *ctx)
{
- io_put_rsrc_node(req->rsrc_node);
+ io_put_rsrc_node(ctx, req->rsrc_node);
}
static inline void io_charge_rsrc_node(struct io_ring_ctx *ctx,
