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io_uring/rsrc: clean up __io_sqe_buffers_update() 

Inline offset variable, so we don't use it without subjecting it to
array_index_nospec() first.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/77936d9ed23755588810c5eafcea7e1c3b90e3cd.1681395792.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2023-04-13 15:28:12 +01:00 committed by Jens Axboe
parent 2f2af35f8e
commit 9a57fffedc
1 changed files with 1 additions and 2 deletions
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3
io_uring/rsrc.c
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@ -469,7 +469,6 @@ static int __io_sqe_buffers_update(struct io_ring_ctx *ctx,
for (done = 0; done < nr_args; done++) {
struct io_mapped_ubuf *imu;
int offset = up->offset + done;
u64 tag = 0;
err = io_copy_iov(ctx, &iov, iovs, done);
@ -490,7 +489,7 @@ static int __io_sqe_buffers_update(struct io_ring_ctx *ctx,
if (err)
break;
i = array_index_nospec(offset, ctx->nr_user_bufs);
i = array_index_nospec(up->offset + done, ctx->nr_user_bufs);
if (ctx->user_bufs[i] != ctx->dummy_ubuf) {
err = io_queue_rsrc_removal(ctx->buf_data, i,
ctx->rsrc_node, ctx->user_bufs[i]);