[BusyBox] telnetd in kernel 2.6 segfaults (devfs)

[Kevin P. Fleming]

Ignacio García Pérez wrote:

> When I boot this system using kernel 2.4, dev and pts filesystems get
> automatically mounted.

That means you are using devfs and "devfs=mount".

> When I boot it using kernel 2.6, only dev filesystem gets automatically
> mounted.

That is because devfs is deprecated in 2.6, and no longer automatically 
mounts devpts either.

> Since I use exactly the same root filesystem in both cases, the difference
> is obviously in the kernel. Maybe it's adefault behaviour that has changed
> for the 2.6 series.

There are an _enormous_ number of behavior changes in 2.6 :-) You would 
be well served to read some of the available documentation on the 
differences, because they are not interchangeable, especially if you are 
using devfs.