From: "H. Peter Anvin" <hpa@zytor.com>
To: Markus Gutschke <markus@chromium.org>
Cc: Will Drewry <wad@chromium.org>,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-doc@vger.kernel.org, kernel-hardening@lists.openwall.org,
netdev@vger.kernel.org, x86@kernel.org, arnd@arndb.de,
davem@davemloft.net, mingo@redhat.com, oleg@redhat.com,
peterz@infradead.org, rdunlap@xenotime.net,
mcgrathr@chromium.org, tglx@linutronix.de, luto@mit.edu,
eparis@redhat.com, serge.hallyn@canonical.com, djm@mindrot.org,
scarybeasts@gmail.com, indan@nul.nu, pmoore@redhat.com,
akpm@linux-foundation.org, corbet@lwn.net,
eric.dumazet@gmail.com, keescook@chromium.org
Subject: Re: [PATCH v8 5/8] seccomp: Add SECCOMP_RET_TRAP
Date: Thu, 16 Feb 2012 13:23:47 -0800 [thread overview]
Message-ID: <4F3D73E3.7070409@zytor.com> (raw)
In-Reply-To: <CAE6n16nUB8eg18YHdYbSUqtZ_WJduk4B_dYqyYy37K+6di6yVw@mail.gmail.com>
On 02/16/2012 12:28 PM, Markus Gutschke wrote:
> On Thu, Feb 16, 2012 at 12:02, Will Drewry <wad@chromium.org> wrote:
>> Adds a new return value to seccomp filters that triggers a SIGTRAP to be delivered with the new TRAP_SECCOMP si_code.
>>
>> This allows in-process system call emulation -- including just specifying an errno or cleanly dumping core -- rather than just dying.
>
> SIGTRAP might not be the ideal choice of signal number, as it can make
> it very difficult to debug the program in gdb. Other than that, I love
> this feature. It'll significantly simplify the code that we have in
> Chrome.
>
Sounds like SIGSYS to me.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2012-02-16 21:23 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-16 20:02 [PATCH v8 1/8] sk_run_filter: add support for custom load_pointer Will Drewry
2012-02-16 20:02 ` [PATCH v8 2/8] seccomp: kill the seccomp_t typedef Will Drewry
2012-02-20 2:55 ` James Morris
2012-02-16 20:02 ` [PATCH v8 3/8] seccomp: add system call filtering using BPF Will Drewry
2012-02-16 20:06 ` H. Peter Anvin
2012-02-16 20:25 ` [kernel-hardening] " Will Drewry
2012-02-16 20:25 ` Will Drewry
2012-02-16 21:17 ` [kernel-hardening] " H. Peter Anvin
2012-02-16 21:17 ` H. Peter Anvin
2012-02-16 21:28 ` [kernel-hardening] " Markus Gutschke
2012-02-16 21:28 ` Markus Gutschke
2012-02-16 21:34 ` [kernel-hardening] " H. Peter Anvin
2012-02-16 21:34 ` H. Peter Anvin
2012-02-16 21:51 ` [kernel-hardening] " Will Drewry
2012-02-16 21:51 ` Will Drewry
2012-02-16 22:06 ` [kernel-hardening] " H. Peter Anvin
2012-02-16 22:06 ` H. Peter Anvin
2012-02-16 23:00 ` [kernel-hardening] " Will Drewry
2012-02-16 23:00 ` Will Drewry
2012-02-17 0:23 ` [kernel-hardening] " Andrew Lutomirski
2012-02-17 0:23 ` Andrew Lutomirski
2012-02-17 0:43 ` [kernel-hardening] " H. Peter Anvin
2012-02-17 0:43 ` H. Peter Anvin
2012-02-17 0:50 ` [kernel-hardening] " Eric Paris
2012-02-17 0:50 ` Eric Paris
2012-02-17 2:24 ` [kernel-hardening] " H. Peter Anvin
2012-02-17 2:24 ` H. Peter Anvin
2012-02-17 3:53 ` [kernel-hardening] " Will Drewry
2012-02-17 3:53 ` Will Drewry
2012-02-17 4:12 ` [kernel-hardening] " H. Peter Anvin
2012-02-17 4:12 ` H. Peter Anvin
2012-02-17 4:26 ` [kernel-hardening] " Will Drewry
2012-02-17 4:26 ` Will Drewry
2012-02-17 4:32 ` [kernel-hardening] " H. Peter Anvin
2012-02-17 4:32 ` H. Peter Anvin
2012-02-17 4:40 ` [kernel-hardening] " Will Drewry
2012-02-17 4:40 ` Will Drewry
2012-02-16 21:31 ` [kernel-hardening] " Will Drewry
2012-02-16 21:31 ` Will Drewry
2012-02-17 0:48 ` [kernel-hardening] " Indan Zupancic
2012-02-17 0:48 ` Indan Zupancic
2012-02-17 0:51 ` [kernel-hardening] " Andrew Lutomirski
2012-02-17 0:51 ` Andrew Lutomirski
2012-02-17 1:10 ` [kernel-hardening] " H. Peter Anvin
2012-02-17 1:10 ` H. Peter Anvin
2012-02-17 1:25 ` [kernel-hardening] " Indan Zupancic
2012-02-17 1:25 ` Indan Zupancic
2012-02-17 1:33 ` [kernel-hardening] " H. Peter Anvin
2012-02-17 1:33 ` H. Peter Anvin
2012-02-17 2:00 ` [kernel-hardening] " Indan Zupancic
2012-02-17 2:00 ` Indan Zupancic
2012-02-17 2:16 ` [kernel-hardening] " Andrew Lutomirski
2012-02-17 2:16 ` Andrew Lutomirski
2012-02-17 2:22 ` [kernel-hardening] " H. Peter Anvin
2012-02-17 2:22 ` H. Peter Anvin
2012-02-17 3:27 ` [kernel-hardening] " Indan Zupancic
2012-02-17 3:27 ` Indan Zupancic
2012-02-17 4:09 ` [kernel-hardening] " H. Peter Anvin
2012-02-17 4:09 ` H. Peter Anvin
2012-02-17 4:51 ` [kernel-hardening] " Indan Zupancic
2012-02-17 4:51 ` Indan Zupancic
2012-02-17 2:44 ` [kernel-hardening] " Indan Zupancic
2012-02-17 2:44 ` Indan Zupancic
2012-02-17 2:44 ` Indan Zupancic
2012-02-17 2:44 ` Indan Zupancic
2012-02-17 3:38 ` [kernel-hardening] " Will Drewry
2012-02-16 20:02 ` [PATCH v8 4/8] seccomp: add SECCOMP_RET_ERRNO Will Drewry
2012-02-16 20:02 ` [PATCH v8 5/8] seccomp: Add SECCOMP_RET_TRAP Will Drewry
[not found] ` <CAE6n16mCrJC=Sre+PT1H_VfSjW0MGyi0xtEcdcRvGMvvwXWzmA@mail.gmail.com>
2012-02-16 20:28 ` Markus Gutschke
2012-02-16 21:23 ` H. Peter Anvin [this message]
2012-02-16 20:42 ` [kernel-hardening] " Will Drewry
2012-02-16 20:42 ` Will Drewry
2012-02-16 21:11 ` [kernel-hardening] [PATCH v9 " Will Drewry
2012-02-16 21:11 ` Will Drewry
2012-02-16 21:11 ` [kernel-hardening] [PATCH v9 8/8] Documentation: prctl/seccomp_filter Will Drewry
2012-02-16 21:11 ` Will Drewry
2012-02-16 21:28 ` [kernel-hardening] Re: [PATCH v8 5/8] seccomp: Add SECCOMP_RET_TRAP H. Peter Anvin
2012-02-16 21:28 ` H. Peter Anvin
2012-02-16 21:33 ` [kernel-hardening] " Will Drewry
2012-02-16 21:33 ` Will Drewry
2012-02-16 20:02 ` [PATCH v8 6/8] ptrace,seccomp: Add PTRACE_SECCOMP support Will Drewry
2012-02-17 5:08 ` Indan Zupancic
2012-02-17 5:08 ` Indan Zupancic
2012-02-17 5:08 ` Indan Zupancic
2012-02-17 16:23 ` Will Drewry
2012-02-17 22:55 ` Indan Zupancic
2012-02-21 17:31 ` Will Drewry
2012-02-16 20:02 ` [PATCH v8 7/8] x86: Enable HAVE_ARCH_SECCOMP_FILTER Will Drewry
2012-02-16 20:02 ` [PATCH v8 8/8] Documentation: prctl/seccomp_filter Will Drewry
2012-02-16 20:08 ` [kernel-hardening] Re: [PATCH v8 1/8] sk_run_filter: add support for custom load_pointer Will Drewry
2012-02-16 20:08 ` Will Drewry
2012-02-17 1:54 ` Joe Perches
2012-02-17 2:22 ` Will Drewry
2012-02-17 3:04 ` Indan Zupancic
2012-02-17 3:04 ` Indan Zupancic
2012-02-17 3:04 ` Indan Zupancic
2012-02-17 4:13 ` Will Drewry
2012-02-17 5:05 ` Indan Zupancic
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=4F3D73E3.7070409@zytor.com \
--to=hpa@zytor.com \
--cc=akpm@linux-foundation.org \
--cc=arnd@arndb.de \
--cc=corbet@lwn.net \
--cc=davem@davemloft.net \
--cc=djm@mindrot.org \
--cc=eparis@redhat.com \
--cc=eric.dumazet@gmail.com \
--cc=indan@nul.nu \
--cc=keescook@chromium.org \
--cc=kernel-hardening@lists.openwall.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@mit.edu \
--cc=markus@chromium.org \
--cc=mcgrathr@chromium.org \
--cc=mingo@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=oleg@redhat.com \
--cc=peterz@infradead.org \
--cc=pmoore@redhat.com \
--cc=rdunlap@xenotime.net \
--cc=scarybeasts@gmail.com \
--cc=serge.hallyn@canonical.com \
--cc=tglx@linutronix.de \
--cc=wad@chromium.org \
--cc=x86@kernel.org \
/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.