linux-kernel - Re: [PATCH] seccomp: fix SECCOMP_USER_NOTIF_FLAG

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Date:   Mon, 21 Oct 2019 07:50:13 -0600
From:   Tycho Andersen <tycho@...ho.ws>
To:     Christian Brauner <christian.brauner@...ntu.com>
Cc:     linux-kernel@...r.kernel.org, keescook@...omium.org,
        rong.a.chen@...el.com, ast@...nel.org, daniel@...earbox.net,
        kafai@...com, lkp@...ts.01.org, luto@...capital.net,
        shuah@...nel.org, songliubraving@...com, tyhicks@...onical.com,
        wad@...omium.org, yhs@...com, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH] seccomp: fix SECCOMP_USER_NOTIF_FLAG_CONTINUE test

On Mon, Oct 21, 2019 at 11:10:55AM +0200, Christian Brauner wrote:
> The ifndef for SECCOMP_USER_NOTIF_FLAG_CONTINUE was placed under the
> ifndef for the SECCOMP_FILTER_FLAG_NEW_LISTENER feature. This will not
> work on systems that do support SECCOMP_FILTER_FLAG_NEW_LISTENER but do not
> support SECCOMP_USER_NOTIF_FLAG_CONTINUE. So move the latter ifndef out of
> the former ifndef's scope.
> 
> 2019-10-20 11:14:01 make run_tests -C seccomp
> make: Entering directory '/usr/src/perf_selftests-x86_64-rhel-7.6-0eebfed2954f152259cae0ad57b91d3ea92968e8/tools/testing/selftests/seccomp'
> gcc -Wl,-no-as-needed -Wall  seccomp_bpf.c -lpthread -o seccomp_bpf
> seccomp_bpf.c: In function ‘user_notification_continue’:
> seccomp_bpf.c:3562:15: error: ‘SECCOMP_USER_NOTIF_FLAG_CONTINUE’ undeclared (first use in this function)
>   resp.flags = SECCOMP_USER_NOTIF_FLAG_CONTINUE;
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> seccomp_bpf.c:3562:15: note: each undeclared identifier is reported only once for each function it appears in
> Makefile:12: recipe for target 'seccomp_bpf' failed
> make: *** [seccomp_bpf] Error 1
> make: Leaving directory '/usr/src/perf_selftests-x86_64-rhel-7.6-0eebfed2954f152259cae0ad57b91d3ea92968e8/tools/testing/selftests/seccomp'
> 
> Reported-by: kernel test robot <rong.a.chen@...el.com>
> Fixes: 0eebfed2954f ("seccomp: test SECCOMP_USER_NOTIF_FLAG_CONTINUE")
> Cc: linux-kselftest@...r.kernel.org
> Signed-off-by: Christian Brauner <christian.brauner@...ntu.com>

Reviewed-by: Tycho Andersen <tycho@...ho.ws>