[LTP] rt_sigqueueinfo: Invalid argument

[Jan Stancek]

----- Original Message -----
> Hi!
> > rt_sigqueueinfo01 failed on all device (x86_64, i386, arm / arm64)
> > started failing from Linux version 4.19.0-rc6-next-20181004.
> > Do you see this failure at your end?
> >
> > rt_sigqueueinfo01: rt_sigqueueinfo: Invalid argument
> > rt_sigqueueinfo01: rt_sigqueueinfo: Invalid argument
> > rt_sigqueueinfo01    1  TFAIL  :  rt_sigqueueinfo01.c:97: Test Failed
> > rt_sigqueueinfo01    0  TINFO  :  Failed to record test working dir
> > rt_sigqueueinfo01    1  TFAIL  :  rt_sigqueueinfo01.c:97: Test Failed
> > rt_sigqueueinfo01    0  TINFO  :  Failed to record test working dir
> > rt_sigqueueinfo01    2  TFAIL  :  rt_sigqueueinfo01.c:97: Test Failed
> > 
> > Full log  details.
> > https://lkft.validation.linaro.org/scheduler/job/451548#L10339
> 
> I do not recall seeing this test to fail.
> 
> However the test is old messy code, one thing that I guess may happen is
> that there is random garbage in the siginfo_t structure we pass to the
> syscall and in you case you were unlucky enough so that kernel rejects
> the value, but that is just wild guess.

Mainline doesn't seem to mind if we pass garbage atm. (4.19-rc7)
but we should initialize entire struct anyway.

In -next there is:
  https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/kernel/signal.c?id=e75dc036c445b91b8b2ad4e6c9b05f04b6be6d3f
and test doesn't set si_signo.

Regards,
Jan

> 
> Btw, I've opened an issue to clean up the test in:
> 
> https://github.com/linux-test-project/ltp/issues/404
> 
> --
> Cyril Hrubis
> chrubis@suse.cz
>