[PATCH 1/2] io_uring/tctx: check for setup tctx->io_wq before teardown

[Jens Axboe <axboe@kernel.dk>]

As with the idling code before it, the error exit path should check for
a NULL tctx->io_wq before calling io_wq_put_and_exit().

Fixes: 7880174e1e5e ("io_uring/tctx: clean up __io_uring_add_tctx_node() error handling")
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 io_uring/tctx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/io_uring/tctx.c b/io_uring/tctx.c
index 61533f30494f..c011a593c0ad 100644
--- a/io_uring/tctx.c
+++ b/io_uring/tctx.c
@@ -171,7 +171,8 @@ int __io_uring_add_tctx_node(struct io_ring_ctx *ctx)
 	}
 	if (!current->io_uring) {
 err_free:
-		io_wq_put_and_exit(tctx->io_wq);
+		if (tctx->io_wq)
+			io_wq_put_and_exit(tctx->io_wq);
 		percpu_counter_destroy(&tctx->inflight);
 		kfree(tctx);
 	}
-- 
2.53.0