From: Peter Zijlstra <peterz@infradead.org>
To: Jiri Kosina <jikos@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Andrea Arcangeli <aarcange@redhat.com>,
"Woodhouse, David" <dwmw@amazon.co.uk>,
Oleg Nesterov <oleg@redhat.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH v3 1/3] ptrace: Provide ___ptrace_may_access() that can be applied on arbitrary tasks
Date: Wed, 5 Sep 2018 09:51:24 +0200 [thread overview]
Message-ID: <20180905075124.GM24124@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <alpine.LRH.2.00.1809041639340.14475@gjva.wvxbf.pm>
On Tue, Sep 04, 2018 at 04:40:57PM +0200, Jiri Kosina wrote:
> From: Jiri Kosina <jkosina@suse.cz>
>
> Current ptrace_may_access() implementation assumes that the 'source' task is
> always the caller (current).
Note that now you 'fixed' the new user, this is still true. Which makes
me think you do not in fact need this patch, right?
next prev parent reply other threads:[~2018-09-05 7:51 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-31 20:56 [PATCH] x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation Jiri Kosina
2018-09-03 8:51 ` Jiri Kosina
2018-09-03 12:45 ` [PATCH v2 0/3] Harden spectrev2 userspace-userspace protection Jiri Kosina
2018-09-04 14:23 ` [PATCH v3 " Jiri Kosina
2018-09-04 14:40 ` [PATCH v3 1/3] ptrace: Provide ___ptrace_may_access() that can be applied on arbitrary tasks Jiri Kosina
2018-09-04 16:13 ` Thomas Gleixner
2018-09-04 16:21 ` Thomas Gleixner
2018-09-04 17:26 ` Tim Chen
2018-09-04 17:35 ` Jiri Kosina
2018-09-04 18:10 ` Schaufler, Casey
2018-09-04 18:48 ` Jiri Kosina
2018-09-04 23:26 ` Tim Chen
2018-09-05 6:22 ` Jiri Kosina
2018-09-05 15:58 ` Andi Kleen
2018-09-05 18:04 ` Andrea Arcangeli
2018-09-05 18:29 ` Jiri Kosina
2018-09-05 18:40 ` Andrea Arcangeli
2018-09-05 18:42 ` Jiri Kosina
2018-09-05 19:03 ` Peter Zijlstra
2018-09-05 19:27 ` Schaufler, Casey
2018-09-05 20:02 ` Jiri Kosina
2018-09-05 18:26 ` Thomas Gleixner
2018-09-05 18:35 ` Jiri Kosina
2018-09-04 23:37 ` Andrea Arcangeli
2018-09-05 1:00 ` Schaufler, Casey
2018-09-05 2:38 ` Andrea Arcangeli
2018-09-05 8:00 ` Peter Zijlstra
2018-09-05 15:37 ` Schaufler, Casey
2018-09-05 7:51 ` Peter Zijlstra [this message]
2018-09-04 14:42 ` [PATCH v3 2/3] x86/speculation: apply IBPB more strictly to avoid cross-process data leak Jiri Kosina
2018-09-04 16:18 ` Thomas Gleixner
2018-09-05 7:59 ` Peter Zijlstra
2018-09-05 8:02 ` Jiri Kosina
2018-09-05 9:40 ` Peter Zijlstra
2018-09-05 7:52 ` Peter Zijlstra
2018-09-05 7:55 ` Jiri Kosina
2018-09-04 14:42 ` [PATCH v3 3/3] x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation Jiri Kosina
2018-09-04 14:24 [PATCH v3 1/3] ptrace: Provide ___ptrace_may_access() that can be applied on arbitrary tasks Jiri Kosina
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