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Date:   Thu, 7 Jul 2022 20:05:11 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Po-Hsu Lin <po-hsu.lin@canonical.com>
Cc:     stable@vger.kernel.org, memxor@gmail.com,
        linux-kernel@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
        andrii@kernel.org, kafai@fb.com, songliubraving@fb.com, yhs@fb.com,
        john.fastabend@gmail.com, kpsingh@kernel.org, shuah@kernel.org,
        bpf@vger.kernel.org
Subject: Re: [PATCH stable 5.15 0/1] Revert "selftests/bpf: Add test for
 bpf_timer overwriting crash"
Message-ID: <YscgV2/HW35p4yyi@kroah.com>
References: <20220707094207.229875-1-po-hsu.lin@canonical.com>
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On Thu, Jul 07, 2022 at 05:42:06PM +0800, Po-Hsu Lin wrote:
> The bpf_timer overwriting crash test will cause bpf selftest build
> fail on the stable 5.15 tree with:
> 
> progs/timer_crash.c:8:19: error: field has incomplete type 'struct bpf_timer'
>         struct bpf_timer timer;
>                          ^
> /home/ubuntu/linux/tools/testing/selftests/bpf/tools/include/bpf/bpf_helper_defs.h:39:8:
> note: forward declaration of 'struct bpf_timer'
> struct bpf_timer;
>        ^
> 1 error generated.
> 
> Test shows this can only be built with 5.17 and newer kernels. Let's
> revert it for the 5.15 tree.
> 
> Po-Hsu Lin (1):
>   Revert "selftests/bpf: Add test for bpf_timer overwriting crash"
> 
>  .../testing/selftests/bpf/prog_tests/timer_crash.c | 32 -------------
>  tools/testing/selftests/bpf/progs/timer_crash.c    | 54 ----------------------
>  2 files changed, 86 deletions(-)
>  delete mode 100644 tools/testing/selftests/bpf/prog_tests/timer_crash.c
>  delete mode 100644 tools/testing/selftests/bpf/progs/timer_crash.c
> 
> -- 
> 2.7.4
> 

Now queued up, thanks.

greg k-h