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b=hCKnpX2LMq/yIBVu+3fedTSWRzmEiUKg05k70/cabSsZyN0V70DQNw0habLh5Rp3N c956FUO8f5KMtGhmwZF6JaNrD5YNWgtZGhi2tRzcc2lZ8L4JIxwL79H0b3tBFB4IaO XmqyiHmmqPdau5vX2eMWUrlPCMnRhkbqwrhqOEqbuhQuSJxQhgZLHlWLkOa387kF87 c2QE631FmWh521q0EDzd1BLKeXN0jM2x4hEbJfjU0RuxAt/DbvL2B4RJaNxjRNgwuN sRHkcU5kSCaIM/R/aSWv3TJjb6hXOJ6l+gef1isFdWoX5RRm93+0TI6pGc9yKYqXGJ EIZJjyG5YAQyg== From: Christian Brauner Date: Tue, 10 Nov 2026 10:14:31 +0100 Subject: [PATCH RFC 15/41] tracefs: use fc_init_pseudo() X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261110-work-loop-pseudo-v1-15-4c998976c6c7@kernel.org> References: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> In-Reply-To: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@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)" X-Mailer: b4 0.17-dev-ce4c1 X-Developer-Signature: v=1; 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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. 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 5020365ca704..e04febd868eb 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