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This patch, which has been merged into the mainline Linux kernel, but not yet backported to the 5.15.x tree, precisely addresses our situation: IPFire does not use systemd, but CONFIG_DEVTMPFS_MOUNT. The only explanation I have for bug #12889 arising _now_ is that some component (dracut, maybe) changed its behaviour regarding remounting of already mounted special file systems. As current dracut won't (re)mount any file system already found to be mounted, this means that the mount options decided by the kernel remained untouched for /dev, hence being weak in terms of options hardening possible. As CONFIG_DEVTMPFS_SAFE would not show up in "make menuconfig", changes to kernel configurations have been simulated. Fixes: #12889 Cc: Michael Tremer <michael.tremer@ipfire.org> Signed-off-by: Peter Müller <peter.mueller@ipfire.org>