From: Oleg Nesterov <oleg@redhat.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Olsa <olsajiri@gmail.com>,
Eyal Birger <eyal.birger@gmail.com>, Kees Cook <kees@kernel.org>,
luto@amacapital.net, wad@chromium.org, ldv@strace.io,
mhiramat@kernel.org, andrii@kernel.org,
alexei.starovoitov@gmail.com, cyphar@cyphar.com,
songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com,
peterz@infradead.org, tglx@linutronix.de, bp@alien8.de,
daniel@iogearbox.net, ast@kernel.org, andrii.nakryiko@gmail.com,
rafi@rbk.io, shmulik.ladkani@gmail.com, bpf@vger.kernel.org,
linux-api@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
x86@kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH] seccomp: passthrough uretprobe systemcall without filtering
Date: Tue, 21 Jan 2025 17:44:35 +0100 [thread overview]
Message-ID: <20250121164435.GA17215@redhat.com> (raw)
In-Reply-To: <20250121111631.6e830edd@gandalf.local.home>
On 01/21, Steven Rostedt wrote:
>
> I think this may have been mentioned, but is there a way that the kernel
> could know that this system call is being monitored by seccomp, and if so,
> just stick with the interrupt version? If not, enable the system call?
Consider
int func_to_uretprobe()
{
seccomp(SECCOMP_SET_MODE_STRICT/whatever);
return 123;
}
by the time it is called, the kernel can't know that this function will
call seccomp/install-the-filters/etc, so prepare_uretprobe() can't know
if it is safe to use uretprobe or not.
Oleg.
next prev parent reply other threads:[~2025-01-21 16:45 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-17 0:55 [PATCH] seccomp: passthrough uretprobe systemcall without filtering Eyal Birger
2025-01-17 1:39 ` Oleg Nesterov
2025-01-17 8:02 ` Masami Hiramatsu
2025-01-17 13:36 ` Eyal Birger
2025-01-17 14:09 ` Oleg Nesterov
2025-01-17 17:51 ` Andrii Nakryiko
2025-01-17 19:24 ` Eyal Birger
2025-01-17 19:34 ` Andrii Nakryiko
2025-01-18 15:05 ` Oleg Nesterov
2025-01-17 18:34 ` Dmitry V. Levin
2025-01-17 18:52 ` Eyal Birger
2025-01-18 20:21 ` Kees Cook
2025-01-18 20:31 ` Darrick J. Wong
2025-01-18 20:45 ` Eyal Birger
2025-01-19 2:24 ` Kees Cook
2025-01-19 3:39 ` Eyal Birger
2025-01-19 10:44 ` Jiri Olsa
2025-01-20 21:34 ` Kees Cook
2025-01-27 19:24 ` Eyal Birger
2025-01-27 19:33 ` Kees Cook
2025-01-27 19:39 ` Eyal Birger
2025-01-27 19:43 ` Kees Cook
2025-01-21 14:38 ` Jiri Olsa
2025-01-21 14:47 ` Eyal Birger
2025-01-21 16:16 ` Steven Rostedt
2025-01-21 16:44 ` Oleg Nesterov [this message]
2025-01-21 16:55 ` Jiri Olsa
2025-01-21 22:38 ` Andrii Nakryiko
2025-01-21 22:46 ` Steven Rostedt
2025-01-21 23:13 ` Eyal Birger
2025-01-21 23:29 ` Steven Rostedt
2025-01-19 18:36 ` Andy Lutomirski
2025-01-19 12:40 ` Oleg Nesterov
2025-01-20 21:32 ` Kees Cook
2025-01-21 15:28 ` Oleg Nesterov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250121164435.GA17215@redhat.com \
--to=oleg@redhat.com \
--cc=alexei.starovoitov@gmail.com \
--cc=andrii.nakryiko@gmail.com \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bp@alien8.de \
--cc=bpf@vger.kernel.org \
--cc=cyphar@cyphar.com \
--cc=daniel@iogearbox.net \
--cc=eyal.birger@gmail.com \
--cc=john.fastabend@gmail.com \
--cc=kees@kernel.org \
--cc=ldv@strace.io \
--cc=linux-api@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=mhiramat@kernel.org \
--cc=olsajiri@gmail.com \
--cc=peterz@infradead.org \
--cc=rafi@rbk.io \
--cc=rostedt@goodmis.org \
--cc=shmulik.ladkani@gmail.com \
--cc=songliubraving@fb.com \
--cc=stable@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=wad@chromium.org \
--cc=x86@kernel.org \
--cc=yhs@fb.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.