From: Pavel Begunkov Date: Mon, 21 Jul 2025 09:56:21 +0000 (+0100) Subject: io_uring/zcrx: don't leak pages on account failure X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6bbd3411ff87df1ca38ff32d36eb5dc673ca8021;p=thirdparty%2Fkernel%2Fstable.git io_uring/zcrx: don't leak pages on account failure Someone needs to release pinned pages in io_import_umem() if accounting fails. Assign them to the area but return an error, the following io_zcrx_free_area() will clean them up. Fixes: 262ab205180d2 ("io_uring/zcrx: account area memory") Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/e19f283a912f200c0d427e376cb789fc3f3d69bc.1753091564.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index 6b4bdefb40c46..6a983f1ab592e 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -199,15 +199,13 @@ static int io_import_umem(struct io_zcrx_ifq *ifq, mem->account_pages = io_count_account_pages(pages, nr_pages); ret = io_account_mem(ifq->ctx, mem->account_pages); - if (ret < 0) { + if (ret < 0) mem->account_pages = 0; - return ret; - } mem->pages = pages; mem->nr_folios = nr_pages; mem->size = area_reg->len; - return 0; + return ret; } static void io_release_area_mem(struct io_zcrx_mem *mem)