From: Will Deacon <will.deacon@arm.com>
To: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: "wad@chromium.org" <wad@chromium.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"dsaxena@linaro.org" <dsaxena@linaro.org>,
"arndb@arndb.de" <arndb@arndb.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 2/3] arm64: Add seccomp support
Date: Thu, 6 Mar 2014 15:24:58 +0000 [thread overview]
Message-ID: <20140306152458.GG5202@mudshark.cambridge.arm.com> (raw)
In-Reply-To: <5317DEC6.4060103@linaro.org>
On Thu, Mar 06, 2014 at 02:34:46AM +0000, AKASHI Takahiro wrote:
> On 03/01/2014 02:20 AM, Will Deacon wrote:
> > On Tue, Feb 25, 2014 at 09:20:24AM +0000, AKASHI Takahiro wrote:
> > I'm slightly surprised that we do the secure computing check first. Doesn't
> > this allow a debugger to change the syscall to something else after we've
> > decided that it's ok?
>
> To be honest, I just followed other architectures' implementation.
> Can you elaborate any use case that you have in your mind?
My initial thought was that we should do the secure_computing check *after*
the debugger has finished messing around with the registers. However, I
suppose you'd have had to enable ptrace in your seccompd filter for that
scenario to occur, so there's probably not an issue here after all.
Will
next prev parent reply other threads:[~2014-03-06 15:25 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-07 10:11 [PATCH 0/2] " AKASHI Takahiro
2014-02-07 10:11 ` [PATCH 1/2] " AKASHI Takahiro
2014-02-07 14:44 ` Arnd Bergmann
[not found] ` <CAB5YjtB6XnXRd90AUw=rJCOBKyfcngTQd3Kxft33XLCK+K=Vuw@mail.gmail.com>
2014-02-12 11:05 ` Arnd Bergmann
2014-02-12 11:17 ` Arnd Bergmann
2014-02-18 15:38 ` Catalin Marinas
2014-02-19 11:39 ` AKASHI Takahiro
2014-02-19 16:41 ` Catalin Marinas
2014-02-20 0:34 ` AKASHI Takahiro
2014-02-07 10:11 ` [PATCH 2/2] arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h AKASHI Takahiro
2014-02-17 19:32 ` Will Deacon
2014-02-19 11:16 ` AKASHI Takahiro
2014-02-25 9:20 ` [PATCH v2 0/3] arm64: Add seccomp support AKASHI Takahiro
2014-02-25 9:20 ` [PATCH v2 1/3] asm-generic: Add generic seccomp.h for secure computing mode 1 AKASHI Takahiro
2014-02-25 9:20 ` [PATCH v2 2/3] arm64: Add seccomp support AKASHI Takahiro
2014-02-28 17:20 ` Will Deacon
2014-03-06 2:34 ` AKASHI Takahiro
2014-03-06 15:24 ` Will Deacon [this message]
2014-02-25 9:20 ` [PATCH v2 3/3] arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h AKASHI Takahiro
2014-02-28 16:58 ` Will Deacon
2014-03-13 10:17 ` [PATCH v3 0/3] arm64: Add seccomp support AKASHI Takahiro
2014-03-13 10:17 ` [PATCH v3 1/3] asm-generic: Add generic seccomp.h for secure computing mode 1 AKASHI Takahiro
2014-03-14 17:08 ` Catalin Marinas
2014-03-13 10:17 ` [PATCH v3 2/3] arm64: Add seccomp support AKASHI Takahiro
2014-03-13 10:17 ` [PATCH v3 3/3] arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h AKASHI Takahiro
2014-03-15 5:50 ` [PATCH_v4 0/2] arm64: Add seccomp support AKASHI Takahiro
2014-03-15 5:50 ` [PATCH_v4 1/2] asm-generic: Add generic seccomp.h for secure computing mode 1 AKASHI Takahiro
2014-03-15 5:50 ` [PATCH_v4 2/2] arm64: Add seccomp support AKASHI Takahiro
2014-06-25 14:53 ` [PATCH_v4 0/2] " Mark Salter
2014-06-26 0:57 ` AKASHI Takahiro
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