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authorPavel Begunkov <asml.silence@gmail.com>2022-08-04 17:13:46 +0300
committerJens Axboe <axboe@kernel.dk>2022-08-04 17:35:07 +0300
commitcc18cc5e82033d406f54144ad6f8092206004684 (patch)
tree66af1683c85be4c829e101b68a0978f2789ceb56 /io_uring
parentf482aa98652795846cc55da98ebe331eb74f3d0b (diff)
downloadlinux-cc18cc5e82033d406f54144ad6f8092206004684.tar.xz
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: <stable@vger.kernel.org> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/d34c452e45793e978d26e2606211ec9070d329ea.1659622312.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
-rw-r--r--io_uring/kbuf.c2
1 files changed, 1 insertions, 1 deletions
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;