linux-kernel - Re: [PATCH 0/2] selftests/harness: Handle timeouts cleanly

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Message-ID: <202003131609.228C4BBEDE@keescook>
Date:   Fri, 13 Mar 2020 16:10:18 -0700
From:   Kees Cook <keescook@...omium.org>
To:     shuah <shuah@...nel.org>
Cc:     Andy Lutomirski <luto@...capital.net>,
        Will Drewry <wad@...omium.org>,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] selftests/harness: Handle timeouts cleanly

On Fri, Mar 13, 2020 at 11:25:58AM -0600, shuah wrote:
> Hi Kees,
> 
> On 3/11/20 3:17 PM, Kees Cook wrote:
> > When a selftest would timeout before, the program would just fall over
> > and no accounting of failures would be reported (i.e. it would result in
> > an incomplete TAP report). Instead, add an explicit SIGALRM handler to
> > cleanly catch and report the timeout.
> > 
> > Before:
> > 
> >          [==========] Running 2 tests from 2 test cases.
> >          [ RUN      ] timeout.finish
> >          [       OK ] timeout.finish
> >          [ RUN      ] timeout.too_long
> >          Alarm clock
> > 
> > After:
> > 
> >          [==========] Running 2 tests from 2 test cases.
> >          [ RUN      ] timeout.finish
> >          [       OK ] timeout.finish
> >          [ RUN      ] timeout.too_long
> >          timeout.too_long: Test terminated by timeout
> >          [     FAIL ] timeout.too_long
> >          [==========] 1 / 2 tests passed.
> >          [  FAILED  ]
> > 
> 
> This is good info. to capturein the commit logs for the patches.

The cover letter is an exact copy of patch 2's commit log. :)

> Please add them and send v2. You can also fix the subject prefix
> at the same time :)

I'll resend a v2 with fixed prefix regardless.

-- 
Kees Cook