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Wed, 08 Apr 2026 05:51:46 -0700 (PDT) Message-ID: Date: Wed, 8 Apr 2026 06:51:46 -0600 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/3] io_uring: fix resource leak issues To: KobaK , Pavel Begunkov Cc: Keith Busch , Ming Lei , io-uring@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260408065408.2017967-1-kobak@nvidia.com> Content-Language: en-US From: Jens Axboe In-Reply-To: <20260408065408.2017967-1-kobak@nvidia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 4/8/26 12:54 AM, KobaK wrote: > From: Koba Ko > > Three resource leak fixes found by code audit: > > 1. memmap: pinned pages and pages array leak on WARN_ON path in > io_region_pin_pages() ? mr->pages is never assigned so the caller's > cleanup is a no-op. > > 2. rsrc: kfree() used instead of io_cache_free() in > io_buffer_register_bvec() error path ? bypasses cache return. > > 3. zcrx: io_import_umem() leaves live pinned pages in a partially > initialized struct on io_account_mem() failure, and > io_release_area_mem() is not idempotent (missing pages = NULL), > creating a double-free hazard. General advice - anyone can point an LLM at a code base and get some reports, but please apply some actual critical thinking to the "issues" found before blindly sending them out. -- Jens Axboe