From nobody Sat Feb 7 06:21:45 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 811E12FB97F; Wed, 29 Oct 2025 12:21:08 +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=1761740468; cv=none; b=rjv9q1yID4UWUicP7vPFYPyDbDtmiFwsCzVyzIypNOAmnqpvCXscarXF9ot9JmyaFpibyn2CjmHnAhsU1jSFxivh8yG0oDDvgnhn+jmxlxHu2PoIkwsHqMlq1Us/+GYgMcT2MHT63UZ9K/Pb7TjwkHpMX8YnWk8z4/4TFIfOO5E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761740468; c=relaxed/simple; bh=74AZcYyOqxtykIDy/RGdL2vrgfuHMaAEm8WcGrCjYG4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=nlLuSfMIH1El+mf3G0LeryfsNB4qXjSrdn4AdGZJdmRQNJ7R/0rTUTu9lolOv5LIe6YtXqxtnVClB7wlo+LNDPLsKoiO6Hh/cxGPP2mmOK3ZWNe/+s35KzYQyO+kFlQ/UiMPrOvSxBF+f9xblYj0d8gP3SgVYZCtkNybff/3crQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WfQoxu1F; 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="WfQoxu1F" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A15AEC4CEF7; Wed, 29 Oct 2025 12:21:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761740468; bh=74AZcYyOqxtykIDy/RGdL2vrgfuHMaAEm8WcGrCjYG4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=WfQoxu1Fr9KYAvKbDOOFWpWqct56ailzDn7rYJrmQcCmqex2sTmgVVJdaUgMJd7jR zUK0WJXtwHIQCYchtlLhLvyFt+R9rWgpy8GAdudjXuVJxkbatU+0lcPSb7j8reC8vg s+ZFK607951sMTW298wUZExI1zvQCYzIZACT1f4hiEo7iTcIYRm129/vUf4NOSKZid 0PQijqpEub6FXD5Tvl+8KVmu0pw0pSVHOv1fqURHJTGYXJg75usobwxNmrVU0exGBf COXQ2J7FoeCOzaIYzFB/n/KDYf/5yob4Wu13iDymNtp2BWVPrJG/74F/HdwEumCwkH QWF5IbdtjzypQ== From: Christian Brauner Date: Wed, 29 Oct 2025 13:20:19 +0100 Subject: [PATCH v4 06/72] cgroup: add cgroup namespace to tree after owner is set 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: <20251029-work-namespace-nstree-listns-v4-6-2e6f823ebdc0@kernel.org> References: <20251029-work-namespace-nstree-listns-v4-0-2e6f823ebdc0@kernel.org> In-Reply-To: <20251029-work-namespace-nstree-listns-v4-0-2e6f823ebdc0@kernel.org> To: linux-fsdevel@vger.kernel.org, Josef Bacik , Jeff Layton Cc: Jann Horn , Mike Yuan , =?utf-8?q?Zbigniew_J=C4=99drzejewski-Szmek?= , Lennart Poettering , Daan De Meyer , Aleksa Sarai , Amir Goldstein , Tejun Heo , Johannes Weiner , Thomas Gleixner , Alexander Viro , Jan Kara , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, bpf@vger.kernel.org, Eric Dumazet , Jakub Kicinski , netdev@vger.kernel.org, Arnd Bergmann , Christian Brauner X-Mailer: b4 0.15-dev-96507 X-Developer-Signature: v=1; a=openpgp-sha256; l=835; i=brauner@kernel.org; h=from:subject:message-id; bh=74AZcYyOqxtykIDy/RGdL2vrgfuHMaAEm8WcGrCjYG4=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWQysfV82Nh2Kt3x2J19H7L4Igs2fGiJibvRJv+M5c3Za CEX1sqEjlIWBjEuBlkxRRaHdpNwueU8FZuNMjVg5rAygQxh4OIUgImk6zH89+T+NDUtwqmBQe2V T7LH+6mxXs4s5d78Cp/O6SjIXXrvzcjQ3mBQfeJvdcVpj9OHb03c5Jgqsbd70ZVYGxlR0bVP9vx jBQA= X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Otherwise we trip VFS_WARN_ON_ONC() in __ns_tree_add_raw(). Fixes: 7c6059398533 ("cgroup: support ns lookup") Signed-off-by: Christian Brauner --- kernel/cgroup/namespace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/cgroup/namespace.c b/kernel/cgroup/namespace.c index fdbe57578e68..db9617556dd7 100644 --- a/kernel/cgroup/namespace.c +++ b/kernel/cgroup/namespace.c @@ -30,7 +30,6 @@ static struct cgroup_namespace *alloc_cgroup_ns(void) ret =3D ns_common_init(new_ns); if (ret) return ERR_PTR(ret); - ns_tree_add(new_ns); return no_free_ptr(new_ns); } =20 @@ -86,6 +85,7 @@ struct cgroup_namespace *copy_cgroup_ns(u64 flags, new_ns->ucounts =3D ucounts; new_ns->root_cset =3D cset; =20 + ns_tree_add(new_ns); return new_ns; } =20 --=20 2.47.3