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Subjectregression: /proc/$pid/cmdline lacks trailing '\0' in 4.18-rc1
In v4.18-rc1, /proc/$pid/cmdline is missing final null byte which used
to be there in v4.17 and older kernels:

4.17.1:
tweed:~ # cat /proc/self/cmdline | od -t c
0000000 c a t \0 / p r o c / s e l f / c
0000020 m d l i n e \0
0000027

4.18-rc1:
lion:~ # cat /proc/self/cmdline | od -t c
0000000 c a t \0 / p r o c / s e l f / c
0000020 m d l i n e
0000026

The code has been rewritten quite a lot in 4.18-rc1 so I didn't find yet
where exactly does the change come from. Still looking.

Michal Kubecek

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