From: dave.long@linaro•org (David Long)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v15 00/10] arm64: Add kernel probes (kprobes) support
Date: Tue, 19 Jul 2016 10:01:37 -0400 [thread overview]
Message-ID: <578E32C1.3000903@linaro.org> (raw)
In-Reply-To: <20160719135747.GB21256@e104818-lin.cambridge.arm.com>
On 07/19/2016 09:57 AM, Catalin Marinas wrote:
> On Thu, Jul 14, 2016 at 05:22:08PM +0100, Catalin Marinas wrote:
>> On Fri, Jul 08, 2016 at 12:35:44PM -0400, David Long wrote:
>>> David A. Long (3):
>>> arm64: Add HAVE_REGS_AND_STACK_ACCESS_API feature
>>> arm64: Add more test functions to insn.c
>>> arm64: add conditional instruction simulation support
>>>
>>> Pratyush Anand (2):
>>> arm64: Blacklist non-kprobe-able symbol
>>> arm64: Treat all entry code as non-kprobe-able
>>>
>>> Sandeepa Prabhu (4):
>>> arm64: Kprobes with single stepping support
>>> arm64: kprobes instruction simulation support
>>> arm64: Add kernel return probes support (kretprobes)
>>> kprobes: Add arm64 case in kprobe example module
>>>
>>> William Cohen (1):
>>> arm64: Add trampoline code for kretprobes
>>
>> I applied these patches on top of the arm64 for-next/core branch an
>> tried to run the resulting kernel in a guest (on a Juno platform using
>> both kvmtool and qemu) with KPROBES_SANITY_TEST enabled. Unfortunately,
>> the kernel fails to boot with lots of "Unexpected kernel single-step
>> exception at EL1".
>
> FYI, we managed to track down the issue to two bugs in the arm64 kernel
> boot part, occasionally leaving the PSTATE.D bit set for kernel threads.
> While not KVM specific, the pre-conditions were more likely when running
> as a guest (receiving interrupts early on during boot, possibly because
> of a slow-down in the booting process due to stage 2 page faulting
> mechanism).
>
> Will is going to post the fixes soon.
>
Excellent news.
Thanks,
-dl
next prev parent reply other threads:[~2016-07-19 14:01 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-08 16:35 [PATCH v15 00/10] arm64: Add kernel probes (kprobes) support David Long
2016-07-08 16:35 ` [PATCH v15 01/10] arm64: Add HAVE_REGS_AND_STACK_ACCESS_API feature David Long
2016-07-15 10:57 ` Catalin Marinas
2016-07-15 14:51 ` David Long
2016-07-15 15:13 ` Catalin Marinas
2016-07-15 17:51 ` David Long
2016-07-19 14:17 ` Catalin Marinas
2016-07-08 16:35 ` [PATCH v15 02/10] arm64: Add more test functions to insn.c David Long
2016-07-08 16:35 ` [PATCH v15 03/10] arm64: add conditional instruction simulation support David Long
2016-07-08 16:35 ` [PATCH v15 04/10] arm64: Kprobes with single stepping support David Long
2016-07-20 9:36 ` Marc Zyngier
2016-07-20 11:16 ` Catalin Marinas
2016-07-20 19:08 ` David Long
2016-07-21 8:44 ` Marc Zyngier
2016-07-20 15:49 ` Catalin Marinas
2016-07-21 14:50 ` David Long
2016-07-20 16:09 ` Marc Zyngier
2016-07-20 16:28 ` Catalin Marinas
2016-07-20 16:31 ` Marc Zyngier
2016-07-20 16:46 ` Marc Zyngier
2016-07-20 17:04 ` Catalin Marinas
2016-07-21 16:33 ` David Long
2016-07-21 17:16 ` Catalin Marinas
2016-07-21 17:23 ` Marc Zyngier
2016-07-21 18:33 ` David Long
2016-07-22 10:16 ` Catalin Marinas
2016-07-22 15:51 ` David Long
2016-07-25 17:13 ` Catalin Marinas
2016-07-25 22:27 ` David Long
2016-07-27 11:50 ` Daniel Thompson
2016-07-27 22:13 ` David Long
2016-07-28 14:40 ` Catalin Marinas
2016-07-29 9:01 ` Daniel Thompson
2016-08-04 4:47 ` David Long
2016-08-08 11:13 ` Daniel Thompson
2016-08-08 14:29 ` David Long
2016-08-08 22:49 ` Masami Hiramatsu
2016-08-09 17:23 ` Catalin Marinas
2016-08-10 20:41 ` David Long
2016-08-08 22:19 ` Masami Hiramatsu
2016-07-26 9:50 ` Daniel Thompson
2016-07-26 16:55 ` Catalin Marinas
2016-07-27 10:01 ` Dave Martin
2016-07-26 17:54 ` Mark Rutland
2016-07-27 11:19 ` Daniel Thompson
2016-07-27 11:38 ` Dave Martin
2016-07-27 11:42 ` Daniel Thompson
2016-07-27 13:38 ` Mark Rutland
2016-07-08 16:35 ` [PATCH v15 05/10] arm64: Blacklist non-kprobe-able symbol David Long
2016-07-08 16:35 ` [PATCH v15 06/10] arm64: Treat all entry code as non-kprobe-able David Long
2016-07-15 16:47 ` Catalin Marinas
2016-07-19 0:53 ` David Long
2016-07-08 16:35 ` [PATCH v15 07/10] arm64: kprobes instruction simulation support David Long
2016-07-10 22:51 ` Paul Gortmaker
2016-07-08 16:35 ` [PATCH v15 08/10] arm64: Add trampoline code for kretprobes David Long
2016-07-19 13:46 ` Catalin Marinas
2016-07-20 18:28 ` David Long
2016-07-08 16:35 ` [PATCH v15 09/10] arm64: Add kernel return probes support (kretprobes) David Long
2016-07-08 16:35 ` [PATCH v15 10/10] kprobes: Add arm64 case in kprobe example module David Long
2016-07-14 16:22 ` [PATCH v15 00/10] arm64: Add kernel probes (kprobes) support Catalin Marinas
2016-07-14 17:09 ` William Cohen
2016-07-15 7:50 ` Catalin Marinas
2016-07-15 8:01 ` Marc Zyngier
2016-07-15 8:59 ` Alex Bennée
2016-07-15 9:04 ` Marc Zyngier
2016-07-15 9:53 ` Marc Zyngier
2016-07-14 17:56 ` David Long
2016-07-19 13:57 ` Catalin Marinas
2016-07-19 14:01 ` David Long [this message]
2016-07-19 18:27 ` Catalin Marinas
2016-07-19 19:38 ` David Long
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