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=1794661642; b=r9yaybIFz7CwFm1+l00VVNWnaVZhlXG+xL3LM0LCeq3EyWXUL32LIMpWq01w+SvCeE7n h0OrHhtveuoYB3dxe4q2fWKXo2qhHlwhZEchgHBkmAfaaQdL15JRyp8aBSm7UDotnMl7z G3GrSqsCO6BnQYfxZURMEMbvukpn5hNGR8jwtfMqT08ak+dW12Mhcy9A3A/qO792RUgbn RwYG6AjvCTl2mJ72LyO3OJPaotiIt4cduH4vV0tMskq36PaZVYuvG0Zom527Zs6q8aVbB ZTxVAiqk/4YG0karnpSQfcKTdgYvi90S9mLL0MrHykl4y2SfW9T39CL//0O7lG2ysUA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794661642; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Message-Id:References:In-Reply-To:To:Cc: X-Mailer:X-Developer-Signature:X-Developer-Key; bh=fL5qL7JYOP9BGMrgZwawKOkNR34gS09nbbxdAESC5AY=; b=j89fNz6MF2JPATCGThS9ms9qOyoxvd3aSbGY55Xk73tzP5GWt7pK/104nrIknhneigvH dmYGGDIuYG6qgrorMT3IhFYP3jTh5RT7SJSLLKuT/wt/hdNuEOj35aYoNAcXcQ7CE4yZG tCnFgh1mZJBuV0TB2U3x8U62JYAih/CFmUjSp/Wn25oUO2VGgYK+zIm3rhEE9i9jNNbSe b8rffO1SLOkUTIqlz15K/VvYZ5JiRp5shOSMNAs5vk3sAG/rgYTuFarRtqmr+wxbKZAnO SFR+p7oJw4CjRhLkf/WONpxtcmmSiaO3TLe5v4Sw4pTMwowvj9vul0RVpdbskpUsASQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=XT6Tzz65; 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 7A1B560A6F7A; Sat, 14 Nov 2026 13:07:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=XT6Tzz65 Received: by smtp.kernel.org (Postfix) with ESMTPSA id B32C21F000C4; Sat, 14 Nov 2026 13:07:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794661642; bh=fL5qL7JYOP9BGMrgZwawKOkNR34gS09nbbxdAESC5AY=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=XT6Tzz65LCASVZ47tnM9EdK03t2mFYcw5Wfu4oufgcBgXnbaOuckTDE94B5ZXV+Va EU1Hf7/L5yVuBKj4y88q1JGFQui+kFHrJJu7lnns7s22U3Gs5ZcvsCcJTG0I2EyW3Q KDKAn8ifYEBsZ2B7CrL21bmgUbpdyqHWaiX9WluNWeXrhcyYELynQmFzM5mWkYnC0K zpVL3Gebr3O9VCG64/CDLTlwkC6MFMkAzn4mz3EOe5xNvAgcqW17IAQzQdSPmuWMkG /v0whbvR9pbXyF9a4Ry1WJns8QKC3IBONTMY+4RwPAvzY7FdiKnzRHvhdFNFhLYf64 ce7gMdf7ac8/Q== From: Christian Brauner Date: Sat, 14 Nov 2026 14:01:56 +0100 Subject: [PATCH RFC v2 15/42] tracefs: use fc_init_pseudo() X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261114-work-loop-pseudo-v2-15-98639a2286fb@kernel.org> References: <20261114-work-loop-pseudo-v2-0-98639a2286fb@kernel.org> In-Reply-To: <20261114-work-loop-pseudo-v2-0-98639a2286fb@kernel.org> To: linux-fsdevel@vger.kernel.org Cc: Jann Horn , Chris Mason , Josef Bacik , Christoph Hellwig , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, Alexander Viro , Jan Kara , linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, driver-core@lists.linux.dev, linux-mm@kvack.org, bpf@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, apparmor@lists.ubuntu.com, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, fuse-devel@lists.linux.dev, linux-efi@vger.kernel.org, xen-devel@lists.xenproject.org, ocfs2-devel@lists.linux.dev, linux-s390@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-usb@vger.kernel.org, Amir Goldstein , linux-erofs@lists.ozlabs.org, linux-kselftest@vger.kernel.org, "Christian Brauner (Amutable)" , Alexander Mikhalitsyn X-Mailer: b4 0.17-dev-ce4c1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1109; i=brauner@kernel.org; h=from:subject:message-id; bh=OLdUHvbro/9NsaPkdx9SBi3MWAKl0be+fpwCoTKnM0g=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWT9iCk/X7VxtazYZu/77yKX3Lh0lO+Fb1pg5oS3DhfiF sop1B6L7ihlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZhIniMjwzQz1Rr/RW/fHJCR aP8X8LL8wFk5r+qdurqGgnf6i89UfGNkmML0ZNu1mkT3zPW72uZLPX/ovVd5gtESM71HojlJH6K WsQMA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Initialize tracefs as a pseudo filesystem. This raises SB_I_PSEUDO and also SB_I_NOEXEC and SB_I_NODEV. tracefs never holds executables or device nodes. SB_I_NOEXEC also refuses PROT_EXEC mappings. The only tracefs files that can be mapped are the ring buffers and __rb_map_vma() refuses VM_EXEC already. Reviewed-by: Alexander Mikhalitsyn Signed-off-by: Christian Brauner (Amutable) --- fs/tracefs/inode.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c index 5020365ca7048..e04febd868eb4 100644 --- a/fs/tracefs/inode.c +++ b/fs/tracefs/inode.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -510,6 +511,7 @@ static int tracefs_init_fs_context(struct fs_context *fc) fsi->mode = TRACEFS_DEFAULT_MODE; fc->s_fs_info = fsi; + fc_init_pseudo(fc); fc->ops = &tracefs_context_ops; return 0; } -- 2.53.0