From dfbb8b1feeb5ce880eff2b9c2f0af2a691882f9b Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Thu, 4 Aug 2022 15:13:46 +0100 Subject: [PATCH] io_uring: mem-account pbuf buckets Potentially, someone may create as many pbuf bucket as there are indexes in an xarray without any other restrictions bounding our memory usage, put memory needed for the buckets under memory accounting. Cc: Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/d34c452e45793e978d26e2606211ec9070d329ea.1659622312.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- io_uring/kbuf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index e538fa7cb727c..a73f40a4cfe67 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -436,7 +436,7 @@ int io_provide_buffers(struct io_kiocb *req, unsigned int issue_flags) bl = io_buffer_get_list(ctx, p->bgid); if (unlikely(!bl)) { - bl = kzalloc(sizeof(*bl), GFP_KERNEL); + bl = kzalloc(sizeof(*bl), GFP_KERNEL_ACCOUNT); if (!bl) { ret = -ENOMEM; goto err; -- 2.39.5