From: Pavel Begunkov <asml.silence@gmail.com>
Date: Tue, 11 Apr 2023 11:06:06 +0000 (+0100)
Subject: io_uring/rsrc: zero node's rsrc data on alloc
X-Git-Tag: v6.6.7~2874^2~27
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=13c223962eac16f161cf9b6355209774c609af28;p=platform%2Fkernel%2Flinux-starfive.git

io_uring/rsrc: zero node's rsrc data on alloc

struct io_rsrc_node::rsrc_data field is initialised on rsrc removal and
shouldn't be used before that, still let's play safe and zero the field
on alloc.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/09bd03cedc8da8a7974c5e6e4bf0489fd16593ab.1681210788.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index 73f9e10..329cc38 100644
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c
@@ -218,6 +218,7 @@ static struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx)
 			return NULL;
 	}
 
+	ref_node->rsrc_data = NULL;
 	ref_node->refs = 1;
 	INIT_LIST_HEAD(&ref_node->node);
 	INIT_LIST_HEAD(&ref_node->item_list);