[LTP] [PATCH] syscalls/kill11: add a check between hard limit and MIN_RLIMIT_CORE

[Xiao Yang <yangx.jy@cn.fujitsu.com>]

On 2020/2/12 13:44, Yang Xu wrote:
> Currently, running this case will report EINVAL error if I run "ulimit -c
> 1023" command firstly. From setrlimit(2)manpage, it got EINVAL error because
> rlim->rlim_cur was greater than rlim->rlim_max. So add a check for it before
> setrlimit.
Hi Xu,

It seems better to fix the issue by setting both rlim_cur and rlimit_max 
to the MIN_RLIMIT_CORE.

Thanks,
Xiao Yang
> Reported-by: Pankaj Vinadrao Joshi<Pankaj.VJ@exaleapsemi.com>
> Signed-off-by: Yang Xu<xuyang2018.jy@cn.fujitsu.com>
> ---
>   testcases/kernel/syscalls/kill/kill11.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/testcases/kernel/syscalls/kill/kill11.c b/testcases/kernel/syscalls/kill/kill11.c
> index 83fba5beb..5f70b0a07 100644
> --- a/testcases/kernel/syscalls/kill/kill11.c
> +++ b/testcases/kernel/syscalls/kill/kill11.c
> @@ -201,6 +201,9 @@ void setup(void)
>
>   	SAFE_GETRLIMIT(NULL, RLIMIT_CORE,&rlim);
>
> +	if (rlim.rlim_max<  MIN_RLIMIT_CORE)
> +		tst_brkm(TCONF, NULL, "hard limit(%lu)less than MIN_RLIMT_CORE(%i)",
> +				rlim.rlim_max, MIN_RLIMIT_CORE);
>   	if (rlim.rlim_cur<  MIN_RLIMIT_CORE) {
>   		tst_resm(TINFO, "Adjusting RLIMIT_CORE to %i", MIN_RLIMIT_CORE);
>   		rlim.rlim_cur = MIN_RLIMIT_CORE;