[Devel] LTP syscall failures

[Alexey Dobriyan]

On Mon, May 21, 2007 at 09:47:31AM +0200, Christian Kaiser2 wrote:
> I did some testing with the LTP Regression Test Suite
> (http://ltp.sourceforge.net) inside a VE the last days. When I enable all
> capabilites except "setpcap" I get one warning and three failures. When I
> run the tests native (in VE0) I get no errors. I tested it with several
> Kernels including the latest 2.6.18 and 2.6.20 from the git repository, all
> with the same results.
> 
> I run the syscall test suite of ltp-20070430 as root with the command:
> ./runltp -p -q -f syscalls -l `date +"%Y-%m-%d_%H-%M-%S"`
> 
> Failed tests: syslog12, ustat01, ustat02
> 
> Output:
>         syslog12
>                 syslog system call: read and/or clear kernel message ring
>                                 buffer; set console_loglevel
> 
>                 syslog12    5  FAIL  :  syslog() returned unexpected
> results for
>                                 console level less than 0 ; returned 0
> (expected -1), errno 0 (expected 22)
>                 syslog12    6  FAIL  :  syslog() returned unexpected
> results for console level
>                                 greater than 8 ; returned 0 (expected -1),
> errno 0 (expected 22)
> 
>         ustat0[1-2]
>                 ustat system call: get filesystem statistics
> 
>                 ustat01     1  FAIL  :  ustat(2) failed and setthe errno to
> 13
>                                 : Permission denied
>                 ustat02     1  PASS  :  ustat(2) expected failure; Got
> errno - EINVAL :
>                                 Invalid parameter
>                 ustat02     2  FAIL  :  ustat(2) failed to produce expected
> error; 14, errno:
>                                 EFAULT and got 13
> 
> As you can see the syslog12 and ustat02 tests fail because they return
> other error values than expected. The ustat01 test fails because of
> unsufficient permissions.
> 
> Is there someone out who wants to confirm or to comment why these System
> Call Tests fail?

I've reporoduces ustat unexpected EACCES problem and filed report
at http://bugzilla.openvz.org/show_bug.cgi?id=584