| Message ID | d34c452e45793e978d26e2606211ec9070d329ea.1659622312.git.asml.silence@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [1/1] io_uring: mem-account pbuf buckets | expand |
On Thu, 4 Aug 2022 15:13:46 +0100, Pavel Begunkov wrote: > 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. > > Applied, thanks! [1/1] io_uring: mem-account pbuf buckets commit: cc18cc5e82033d406f54144ad6f8092206004684 Best regards,
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index e538fa7cb727..a73f40a4cfe6 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;
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: <stable@vger.kernel.org> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- io_uring/kbuf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)