On Fri, Jul 12, 2019 at 06:36:26PM +0200, Oleg Nesterov wrote: > On 07/12, Alexey Izbyshev wrote: > > > > --- a/fs/proc/base.c > > +++ b/fs/proc/base.c > > @@ -275,6 +275,8 @@ static ssize_t get_mm_cmdline(struct mm_struct *mm, char __user *buf, > > if (got <= offset) > > break; > > got -= offset; > > + if (got < size) > > + size = got; > > Acked-by: Oleg Nesterov <oleg@xxxxxxxxxx> The proper fix to all /proc/*/cmdline problems is to revert f5b65348fd77839b50e79bc0a5e536832ea52d8d proc: fix missing final NUL in get_mm_cmdline() rewrite 5ab8271899658042fabc5ae7e6a99066a210bc0e fs/proc: simplify and clarify get_mm_cmdline() function
