From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: "Will Deacon" <will@kernel.org>,
"Alexander Viro" <viro@zeniv.linux.org.uk>,
"Paul Elliott" <paul.elliott@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Amit Kachhap" <amit.kachhap@arm.com>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>,
"Marc Zyngier" <maz@kernel.org>,
"Eugene Syromiatnikov" <esyr@redhat.com>,
"Szabolcs Nagy" <szabolcs.nagy@arm.com>,
"H . J . Lu " <hjl.tools@gmail.com>,
"Andrew Jones" <drjones@redhat.com>,
"Kees Cook" <keescook@chromium.org>,
"Arnd Bergmann" <arnd@arndb.de>, "Jann Horn" <jannh@google.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Kristina Martšenko" <kristina.martsenko@arm.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Florian Weimer" <fweimer@redhat.com>,
"Sudakshina Das" <sudi.das@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v8 00/11] arm64: Branch Target Identification support
Date: Mon, 9 Mar 2020 21:05:05 +0000 [thread overview]
Message-ID: <20200309210505.GM4101@sirena.org.uk> (raw)
In-Reply-To: <20200306102729.GC2503422@arrakis.emea.arm.com>
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On Fri, Mar 06, 2020 at 10:27:29AM +0000, Catalin Marinas wrote:
> On Thu, Feb 27, 2020 at 05:44:06PM +0000, Mark Brown wrote:
> > This patch series implements support for ARMv8.5-A Branch Target
> > Identification (BTI), which is a control flow integrity protection
> > feature introduced as part of the ARMv8.5-A extensions.
> Does this series affect uprobes in any way? I.e. can you probe a landing
> pad?
You can't probe a landing pad, uprobes on landing pads will be silently
ignored so the program isn't disrupted, you just don't get the expected
trace from those uprobes. This isn't new with the BTI support since
the landing pads are generally pointer auth instructions, these already
can't be probed regardless of what's going on with this series. It's
already on the list to get sorted.
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next prev parent reply other threads:[~2020-03-09 21:05 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-27 17:44 Mark Brown
2020-02-27 17:44 ` [PATCH v8 01/11] ELF: UAPI and Kconfig additions for ELF program properties Mark Brown
2020-02-27 17:44 ` [PATCH v8 02/11] ELF: Add ELF program property parsing support Mark Brown
2020-02-27 17:44 ` [PATCH v8 03/11] arm64: Basic Branch Target Identification support Mark Brown
2020-03-11 16:31 ` Catalin Marinas
2020-02-27 17:44 ` [PATCH v8 04/11] elf: Allow arch to tweak initial mmap prot flags Mark Brown
2020-02-27 17:44 ` [PATCH v8 05/11] arm64: elf: Enable BTI at exec based on ELF program properties Mark Brown
2020-02-27 17:44 ` [PATCH v8 06/11] arm64: BTI: Decode BYTPE bits when printing PSTATE Mark Brown
2020-02-27 17:44 ` [PATCH v8 07/11] arm64: unify native/compat instruction skipping Mark Brown
2020-02-27 17:44 ` [PATCH v8 08/11] arm64: traps: Shuffle code to eliminate forward declarations Mark Brown
2020-02-27 17:44 ` [PATCH v8 09/11] arm64: BTI: Reset BTYPE when skipping emulated instructions Mark Brown
2020-02-27 17:44 ` [PATCH v8 10/11] KVM: " Mark Brown
2020-02-27 17:44 ` [PATCH v8 11/11] arm64: mm: Display guarded pages in ptdump Mark Brown
2020-02-28 1:35 ` [PATCH v8 00/11] arm64: Branch Target Identification support Richard Henderson
2020-03-11 19:15 ` Mark Brown
2020-03-06 10:21 ` Catalin Marinas
2020-03-06 10:27 ` Catalin Marinas
2020-03-09 21:05 ` Mark Brown [this message]
2020-03-10 12:42 ` Mark Brown
2020-03-11 16:28 ` Catalin Marinas
2020-03-11 17:25 ` Mark Brown
2020-03-12 18:42 ` Catalin Marinas
2020-03-13 12:59 ` Mark Brown
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