From: Jens Axboe <axboe@kernel.dk>
Date: Sun, 23 Feb 2020 20:11:42 +0000 (-0700)
Subject: io_uring: fix personality idr leak
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=41726c9a50e7464beca7112d0aebf3a0090c62d2;p=linux.git

io_uring: fix personality idr leak

We somehow never free the idr, even though we init it for every ctx.
Free it when the rest of the ring data is freed.

Fixes: 071698e13ac6 ("io_uring: allow registering credentials")
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 7d0be264527d6..d961945cb3320 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -6339,6 +6339,7 @@ static void io_ring_ctx_free(struct io_ring_ctx *ctx)
 	io_sqe_buffer_unregister(ctx);
 	io_sqe_files_unregister(ctx);
 	io_eventfd_unregister(ctx);
+	idr_destroy(&ctx->personality_idr);
 
 #if defined(CONFIG_UNIX)
 	if (ctx->ring_sock) {