From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793831260; b=vslYR1fESNI6CJ/cpiWY6JseporJsyezEMSQ84cNNvK8rgMTV6UVM2IeZrBVtJDJjJQt yekiALzYy/0dc82d0jBmCPt9Wo0zYWW/ap35F6sMvYQRp/2GKAm+nZgmDPbf33emBxe3R uJAme1fxwvJ22Uz5NlcNgXtcM807OBzEwwc0IV21w0kFN/mlMIVmE3sqxVV3RZbMOOgwX 0Qy6sII9iyCMy0jdVH3bzkkvubTIw0QLFxn/0yK3uqIgjtaBLPUY0B8geiVT7u8OenJPX JiIRUtSZ3gN3pQO8wSeJCi5DOJTOnoTD/OtGL2dm8+5pYAzqoDpfed2URqNEMZ96rSw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793831260; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=lyAnKR8PDODo0crG5tGUx+iEQBs4Ca7NnrXsM4Km+hk=; b=eGO08AMeu7wetWP7XcYG3q9cFqAnWcZlvbYEkOCMnovWTlZdluDxsi19ZucnzIgUiBIz nxZIxOtEeJSg6o8ne4A5gKgwkDHYE5AzzLSOg7XThM18rhHQApdl+R0SaosvQNUykADYD YL/ulkX3zuuTRnVm7LYdvuBNp3wqC3hC4JEbH6i6km/zYQ6Lnzr6C14wjfVS92BOHqfj7 W2GeEsafhF7DsQygXKIaAay9A6vDn/bbZQfLhG4qR/wqNtdresoMRwiOEzMOXorhkvlZ3 rckwTgDkD1T5wS1IjprkDjCbpntpGgc9n3+IufJNxfLpYGVtE1Cvni/P3DNUv//kDEg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=2WK8NG0N; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 912B4606A33E; Wed, 4 Nov 2026 22:27:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=2WK8NG0N Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1B8251F000C1; Wed, 4 Nov 2026 22:27:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793831260; bh=lyAnKR8PDODo0crG5tGUx+iEQBs4Ca7NnrXsM4Km+hk=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=2WK8NG0NPyBC21tOsiHZRB6NJnytFMnF4+jxsrCGqVaALppqSagrP8KxtnRriHOg7 cHezXMy/XoIIVtBDAtzT3kpkjEsBIPpzHQHfGkR/5XzEeaBwlt/3mWkScpEwwwIrc4 o+zP5suLhCtW4d6S/TegAx8kHzqWcSy7o/+mU1Cw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, sashiko-bot@kernel.org, stable@kernel.org, Johan Hovold , Sasha Levin Subject: [PATCH 6.18 0598/1005] serial: abort TIOCMIWAIT on hangup Date: Wed, 4 Nov 2026 16:05:31 -0500 Message-ID: <20261104211100.605021073@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261104211043.516122098@linuxfoundation.org> References: <20261104211043.516122098@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold [ Upstream commit eb35b73e133686e5b999eb7130c4e3d22fe03089 ] Add the missing hangup check to the TIOCMIWAIT wait loop to avoid going back to sleep (indefinitely) after being woken on hangup. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: sashiko-bot@kernel.org Link: https://lore.kernel.org/r/20260904115542.E20D11F00A3D@smtp.kernel.org Cc: stable@kernel.org Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260910130816.642699-5-johan@kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/serial_core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 94da7977f6774..80d1a1b0ba9c1 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1251,6 +1251,11 @@ static int uart_wait_modem_status(struct tty_struct *tty, struct uart_state *sta break; } + if (tty_io_error(tty)) { + ret = -EIO; + break; + } + schedule(); /* see if a signal did it */ -- 2.53.0