From nobody Sun Feb 8 14:13:10 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C92262367BB; Fri, 25 Apr 2025 08:11:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745568715; cv=none; b=ZhImhkAUKhgKfokgxLNfzJMIl/jqyxoYZ2A2NJ4kuw9pfSLGbh+iOJUdTuG2n8tfziK6jaAKAmYdd2Txtm4BIw6VuZn1Gls2SJjs1Qii9U9/6h0KVX+DSxMnwPAPd3Ptn4gWqYegrPOdJdDTwKAQ5iFWgyzmfW2fGsrNHEHRcjc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745568715; c=relaxed/simple; bh=lKHgXD3YJcZUCX/EWbivAcuAmix3WP6EI2DGGplB02U=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=eTXoGuwCeEvhnvw/JQlh1b2serCjVCFnd+pUX/7Q0jRM54651x8PHPyaJIYKy/Q34esrCiceSrHOdW9lBnVtH71TxBbtQkv6uJaHZ6oDDKRd3hlq/T0E5uUnVDJdW4Da5An/zD8k5jgcEMcPYHeHenmhqavSjZ+Y+5CFBTLR7IU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tZNmf8pI; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tZNmf8pI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BBCC7C4CEE4; Fri, 25 Apr 2025 08:11:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745568715; bh=lKHgXD3YJcZUCX/EWbivAcuAmix3WP6EI2DGGplB02U=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=tZNmf8pIDsN9Gw7AU9oWrmMNIF4r8dR8ubLLapWz9qXJ00/fnXawAS5l66BqV07si 8g5r/5OncQJ4roZi82KZ3hZ3gWYyLY4RXI8xapdpfmhyGGv0Co5aTRqKe5VU3lzGL8 R39DxSY6J6LpyB/MpbpRq/kkNhQ4Bv5hQlZXQrk0pyXVzAtA3S09On2qxuMY2VN6ru v7OJA9X+SWYRqra4WPxUEDRJp/6PKTqkqlC7KsysrlEWro/CqJGQCnDh8NebjkvpMd /hzV2PP2iYDb8KkBTGu5awpnxNCgI/vARV1lW2pfXMxpQNH0l1FMh3oNI8QaiYxnr3 9cYd5wg/MpHNw== From: Christian Brauner Date: Fri, 25 Apr 2025 10:11:33 +0200 Subject: [PATCH v2 4/4] net, pidfs: enable handing out pidfds for reaped sk->sk_peer_pid 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: quoted-printable Message-Id: <20250425-work-pidfs-net-v2-4-450a19461e75@kernel.org> References: <20250425-work-pidfs-net-v2-0-450a19461e75@kernel.org> In-Reply-To: <20250425-work-pidfs-net-v2-0-450a19461e75@kernel.org> To: Oleg Nesterov , Kuniyuki Iwashima , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, David Rheinsberg , Jan Kara , Alexander Mikhalitsyn , Luca Boccassi , Lennart Poettering , Daan De Meyer , Mike Yuan , Christian Brauner X-Mailer: b4 0.15-dev-c25d1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1187; i=brauner@kernel.org; h=from:subject:message-id; bh=lKHgXD3YJcZUCX/EWbivAcuAmix3WP6EI2DGGplB02U=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWRwO2+NV1euXjCjVvrErqdhu7cErzp6Z9E7xTV5k5tn1 B3STJ1b01HKwiDGxSArpsji0G4SLrecp2KzUaYGzBxWJpAhDFycAjCRH5KMDNOTy0+rOjNydDCs SH5/MkHIfsP+qWkPjE78f/XJq+qZwBJGhsO5vA4HBThkHdMMu7a0/zu1OHt6Dcf293uulPA/MGd dyAYA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Now that all preconditions are met, allow handing out pidfs for reaped sk->sk_peer_pids. Signed-off-by: Christian Brauner Reviewed-by: Kuniyuki Iwashima --- net/core/sock.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/net/core/sock.c b/net/core/sock.c index b969d2210656..5ad0b53d0fb0 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -148,6 +148,8 @@ =20 #include =20 +#include + #include "dev.h" =20 static DEFINE_MUTEX(proto_list_mutex); @@ -1891,18 +1893,10 @@ int sk_getsockopt(struct sock *sk, int level, int o= ptname, if (!peer_pid) return -ENODATA; =20 - pidfd =3D pidfd_prepare(peer_pid, 0, &pidfd_file); + pidfd =3D pidfd_prepare(peer_pid, PIDFD_STALE, &pidfd_file); put_pid(peer_pid); - if (pidfd < 0) { - /* - * dbus-broker relies on -EINVAL being returned - * to indicate ESRCH. Paper over it until this - * is fixed in userspace. - */ - if (pidfd =3D=3D -ESRCH) - pidfd =3D -EINVAL; + if (pidfd < 0) return pidfd; - } =20 if (copy_to_sockptr(optval, &pidfd, len) || copy_to_sockptr(optlen, &len, sizeof(int))) { --=20 2.47.2