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([181.229.23.179]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-139d90e95c6sm47507970c88.11.2026.06.27.19.43.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 27 Jun 2026 19:43:01 -0700 (PDT) From: =?UTF-8?q?Iv=C3=A1n=20Ezequiel=20Rodriguez?= To: zfigura@codeweavers.com Cc: wine-devel@winehq.org, linux-kernel@vger.kernel.org, =?UTF-8?q?Iv=C3=A1n=20Ezequiel=20Rodriguez?= Subject: [PATCH 4/4] ntsync: reject wait ioctls with zero owner Date: Sat, 27 Jun 2026 23:42:39 -0300 Message-ID: <20260628024239.152852-5-ivanrwcm25@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260628024239.152852-1-ivanrwcm25@gmail.com> References: <20260628024239.152852-1-ivanrwcm25@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit setup_wait() already validates pad and flags but not owner, while Documentation/userspace-api/ntsync.rst requires EINVAL when owner is zero. Reject early before queueing waiters. Signed-off-by: Iván Ezequiel Rodriguez --- drivers/misc/ntsync.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index 02c9d1192812..4a805919bb0c 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -875,6 +875,9 @@ static int setup_wait(struct ntsync_device *dev, if (args->pad || (args->flags & ~NTSYNC_WAIT_REALTIME)) return -EINVAL; + if (!args->owner) + return -EINVAL; + if (size >= sizeof(fds)) return -EINVAL; -- 2.43.0