linux-kernel - Re: [ptrace] 201766a20e: kernel_selftests.seccomp.make

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Date:   Mon, 5 Aug 2019 12:47:19 +0300
From:   "Dmitry V. Levin" <ldv@...linux.org>
To:     kernel test robot <rong.a.chen@...el.com>
Cc:     Shuah Khan <shuah@...nel.org>,
        Elvira Khabirova <lineprinter@...linux.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Kees Cook <keescook@...omium.org>,
        Andy Lutomirski <luto@...nel.org>,
        Eugene Syromyatnikov <esyr@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        kbuild test robot <lkp@...el.com>, lkp@...org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [ptrace] 201766a20e: kernel_selftests.seccomp.make_fail

On Mon, Jul 29, 2019 at 05:35:30PM +0800, kernel test robot wrote:
> FYI, we noticed the following commit (built with gcc-7):
> 
> commit: 201766a20e30f982ccfe36bebfad9602c3ff574a ("ptrace: add PTRACE_GET_SYSCALL_INFO request")
> https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux.git master
> 
> in testcase: kernel_selftests
> with following parameters:
> 
> 	group: kselftests-02
> 
> test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
> test-url: https://www.kernel.org/doc/Documentation/kselftest.txt

The URL above also says: "Tests are intended to be run after building,
installing and booting a kernel".

Please build selftests with installed kernel headers corresponding to the
installed kernel.

Alternatively, tools/testing/selftests/lib.mk could be extended
to include uapi headers from the kernel tree into CPPFLAGS, e.g.

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 1c8a1963d03f..b5f4f0fb8eeb 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -10,6 +10,9 @@ ifeq (0,$(MAKELEVEL))
 endif
 selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))
 
+uapi_dir = $(realpath $(selfdir)/../../../include/uapi)
+CPPFLAGS += -I$(uapi_dir)
+
 # The following are built by lib.mk common compile rules.
 # TEST_CUSTOM_PROGS should be used by tests that require
 # custom build rule and prevent common build rule use.


-- 
ldv

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