Re: [PATCH 6.6.y] kselftest: Add a ksft_perror() helper

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On Tue, 30 Apr 2024, Greg KH wrote:

> On Tue, Apr 30, 2024 at 01:06:27AM +0000, Edward Liaw wrote:
> > From: Mark Brown <broonie@xxxxxxxxxx>
> > 
> > [ Upstream commit 907f33028871fa7c9a3db1efd467b78ef82cce20 ]
> > 
> > The standard library perror() function provides a convenient way to print
> > an error message based on the current errno but this doesn't play nicely
> > with KTAP output. Provide a helper which does an equivalent thing in a KTAP
> > compatible format.
> > 
> > nolibc doesn't have a strerror() and adding the table of strings required
> > doesn't seem like a good fit for what it's trying to do so when we're using
> > that only print the errno.
> > 
> > Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
> > Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
> > Signed-off-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
> > Stable-dep-of: 071af0c9e582 ("selftests: timers: Convert posix_timers test to generate KTAP output")
> > Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx>
> > ---
> >  tools/testing/selftests/kselftest.h | 14 ++++++++++++++
> >  1 file changed, 14 insertions(+)
> 
> This commit is already in 6.6.29, why submit it again?

I don't see this in v6.6.29.

The function that it adds is called, but doesn't exist however:

stable/linux-6.6.y:tools/testing/selftests/timers/posix_timers.c:               ksft_perror("Can't call gettimeofday()");
stable/linux-6.6.y:tools/testing/selftests/timers/posix_timers.c:               ksft_perror("Can't set timer");
stable/linux-6.6.y:tools/testing/selftests/timers/posix_timers.c:               ksft_perror("Can't call gettimeofday()");
stable/linux-6.6.y:tools/testing/selftests/timers/posix_timers.c:               ksft_perror("Can't create timer");
stable/linux-6.6.y:tools/testing/selftests/timers/posix_timers.c:               ksft_perror("Can't call gettimeofday()");
stable/linux-6.6.y:tools/testing/selftests/timers/posix_timers.c:               ksft_perror("Can't set timer");
stable/linux-6.6.y:tools/testing/selftests/timers/posix_timers.c:               ksft_perror("Can't call gettimeofday()");

We should probably have this added to linux-6.6.y.

-- 
Lee Jones [李琼斯]




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