From: Pavel Begunkov asml.silence@gmail.com
[ Upstream commit 34bb77184123ae401100a4d156584f12fa630e5c ]
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: Sasha Levin sashal@kernel.org --- 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 5fc3a62eae72..21823d1e91de 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -8589,7 +8589,7 @@ 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) {