Ubuntu
dropbear package

  1. Bug #933903
  2. Comment #0

Comment 0 for bug 933903

Revision history for this message
Mike Harris (mwharris-h) wrote : Dropbear's init scripts mount /dev/pts a second time

The dropbear package includes an initramfs script, /usr/share/initramfs-tools/scripts/init-premount/devpts, that mounts devpts a second time, after it's already been mounted by /usr/share/initramfs-tools/init, provided by initramfs-tools.

Line 23 in /usr/share/initramfs-tools/scripts/init-premount/devpts from dropbear:
mount -t devpts none /dev/pts

Line 25 in /usr/share/initramfs-tools/init from initramfs-tools:
mount -t devpts -o noexec,nosuid,gid=5,mode=0620 devpts /dev/pts || true

The second mount from dropbear fails since /dev/pts is already mounted, but it does change the mount options:

mwharris@mwharris-test:~$ grep pts /proc/mounts
devpts /dev/pts devpts rw,nosuid,noexec,relatime,mode=600,ptmxmode=000 0 0

I'm not sure why dropbear tried to mount devpts a second time, but it seems like the best fix would just be to remove /usr/share/initramfs-tools/scripts/init-premount/devpts from dropbear

I'm on Precise using dropbear_2011.54-1 and initramfs-tools_0.99ubuntu10