From 34bb77184123ae401100a4d156584f12fa630e5c Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Wed, 6 Apr 2022 12:43:57 +0100
Subject: [PATCH] io_uring: nospec index for tags on files update
Git-commit: 34bb77184123ae401100a4d156584f12fa630e5c
Patch-mainline: v5.18-rc2
References: bsc#1205205
Don't forget to array_index_nospec() for indexes before updating rsrc
tags in __io_sqe_files_update(), just use already safe and precalculated
index @i.
Fixes: c3bdad0271834 ("io_uring: add generic rsrc update with tags")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index a88eca3e0902..b517fd9c3f60 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -9094,7 +9094,7 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx,
err = -EBADF;
break;
}
- *io_get_tag_slot(data, up->offset + done) = tag;
+ *io_get_tag_slot(data, i) = tag;
io_fixed_file_set(file_slot, file);
err = io_sqe_file_register(ctx, file, i);
if (err) {
--
2.35.3