[LTP] [PATCH tbt_cases] umip_basic_test.c: update umip basic test for new kernel v5.4

[Cyril Hrubis]

Hi!
> +		/* after linux kernel v5.4 mainline, 64bit SGDT SIDT SMSW will return
> +		   dummy value and not trigger SIGSEGV due to kernel code change */
> +		#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,4,0)

This is obviously wrong, the version you get here is the version from
kernel headers that does not correspond to the kernel you are running
on at all.

We do have tst_kvercmp() function in LTP that uses parses uname() output
and returns if you are running on kernel newer/same/older as the version
passed to that function. Use that one instead.

> +			tst_res(TINFO, "Linux kernel version is after than v5.4");
> +			if (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) {
> +				tst_res(TFAIL, "Got SIGSEGV\n\n");
> +				return;
> +			}
> +			tst_res(TPASS, "Didn't receive SIGSEGV, child exited with %s\n\n",
> +				tst_strstatus(status));
> +				return;
				^
				Wrong indentation.

> +		#else
> +			tst_res(TINFO, "Linux kernel version is before than v5.4");
> +		#endif
> +	}
> +
>  	if (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) {
> -		tst_res(TPASS, "Got SIGSEGV");
> +		tst_res(TPASS, "Got SIGSEGV\n\n");
>  		return;
>  	}
> -	tst_res(TFAIL, "Didn't receive SIGSEGV, child exited with %s",
> +	tst_res(TFAIL, "Didn't receive SIGSEGV, child exited with %s\n\n",
>  		tst_strstatus(status));

Can you please avoid polluting output with useless newlines as well?

>  }
>  
> -- 
> 2.14.1
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp

-- 
Cyril Hrubis
chrubis@suse.cz