linux-kernel - Re: [PATCH net] Drop packets with invalid headers to prevent KMSAN infoleak

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Message-ID: <CAGiJo8TmtUq3ogd+4gfSXM4MpFV48EhOTAGwFVAuGhwNaYFzCw@mail.gmail.com>
Date: Tue, 29 Oct 2024 14:23:08 -0700
From: Daniel Yang <danielyangkang@...il.com>
To: Yonghong Song <yonghong.song@...ux.dev>
Cc: Martin KaFai Lau <martin.lau@...ux.dev>, Daniel Borkmann <daniel@...earbox.net>, 
	John Fastabend <john.fastabend@...il.com>, Alexei Starovoitov <ast@...nel.org>, 
	Andrii Nakryiko <andrii@...nel.org>, Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
	KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
	Jiri Olsa <jolsa@...nel.org>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	"open list:BPF [NETWORKING] (tcx & tc BPF, sock_addr)" <bpf@...r.kernel.org>, 
	"open list:BPF [NETWORKING] (tcx & tc BPF, sock_addr)" <netdev@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>, 
	syzbot+346474e3bf0b26bd3090@...kaller.appspotmail.com
Subject: Re: [PATCH net] Drop packets with invalid headers to prevent KMSAN infoleak

On Sun, Oct 27, 2024 at 10:42 PM Yonghong Song <yonghong.song@...ux.dev> wrote:
> It might be due to your .config file.
> The 'struct syscall_trace_enter' is defined in kernel/trace/trace.h,
> which is used in kernel/trace/trace_syscalls.c. Maybe your config
> does not have CONFIG_FTRACE_SYSCALLS?
I did add it to my config but another error popped up after I tried to
rerun the tests. I just ended up using the vmtest.sh script and got
the tests working. Seems like there should be a template config file
or something to make building locally more convenient. Anyways, thanks
for the help.

- Daniel