From: masami.hiramatsu.pt@hitachi.com (Masami Hiramatsu)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/5] ARM64: Add kernel probes(Kprobes) support
Date: Thu, 27 Nov 2014 15:07:48 +0900 [thread overview]
Message-ID: <5476BFB4.2020705@hitachi.com> (raw)
In-Reply-To: <CAPvkgC3eVOZEn79C9PC9c7TqC_-yCtDhw5LL6ZWUJxr+oQFaow@mail.gmail.com>
(2014/11/27 3:59), Steve Capper wrote:
> The crash is extremely easy to reproduce.
>
> I've not observed any missed events on a kprobe on an arm64 system
> that's still alive.
> My (limited!) understanding is that this suggests there could be a
> problem with how missed events from a recursive call to memcpy are
> being handled.
I think so too. BTW, could you bisect that? :)
Thank you,
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt at hitachi.com
WARNING: multiple messages have this Message-ID (diff)
From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
To: Steve Capper <steve.capper@linaro.org>
Cc: David Long <dave.long@linaro.org>,
"Jon Medhurst (Tixy)" <tixy@linaro.org>,
Russell King <linux@arm.linux.org.uk>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
Sandeepa Prabhu <sandeepa.prabhu@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>,
William Cohen <wcohen@redhat.com>,
David Miller <davem@davemloft.net>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: Re: [PATCH v3 0/5] ARM64: Add kernel probes(Kprobes) support
Date: Thu, 27 Nov 2014 15:07:48 +0900 [thread overview]
Message-ID: <5476BFB4.2020705@hitachi.com> (raw)
In-Reply-To: <CAPvkgC3eVOZEn79C9PC9c7TqC_-yCtDhw5LL6ZWUJxr+oQFaow@mail.gmail.com>
(2014/11/27 3:59), Steve Capper wrote:
> The crash is extremely easy to reproduce.
>
> I've not observed any missed events on a kprobe on an arm64 system
> that's still alive.
> My (limited!) understanding is that this suggests there could be a
> problem with how missed events from a recursive call to memcpy are
> being handled.
I think so too. BTW, could you bisect that? :)
Thank you,
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com
next prev parent reply other threads:[~2014-11-27 6:07 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-18 6:32 [PATCH v3 0/5] ARM64: Add kernel probes(Kprobes) support David Long
2014-11-18 6:32 ` David Long
2014-11-18 6:32 ` [PATCH v3 1/5] arm64: Kprobes with single stepping support David Long
2014-11-18 6:32 ` David Long
2014-11-18 13:28 ` Jon Medhurst (Tixy)
2014-11-18 13:28 ` Jon Medhurst (Tixy)
2014-11-21 4:28 ` David Long
2014-11-21 4:28 ` David Long
2014-11-18 14:38 ` William Cohen
2014-11-18 14:38 ` William Cohen
2014-11-18 14:39 ` William Cohen
2014-11-18 14:39 ` William Cohen
2014-11-18 14:56 ` Will Deacon
2014-11-18 14:56 ` Will Deacon
2014-11-19 11:21 ` Sandeepa Prabhu
2014-11-19 11:21 ` Sandeepa Prabhu
2014-11-19 11:25 ` Will Deacon
2014-11-19 11:25 ` Will Deacon
2014-11-19 14:55 ` David Long
2014-11-19 14:55 ` David Long
2014-11-20 5:10 ` Sandeepa Prabhu
2014-11-20 5:10 ` Sandeepa Prabhu
2014-11-26 6:46 ` David Long
2014-11-26 6:46 ` David Long
2014-11-26 10:09 ` Will Deacon
2014-11-26 10:09 ` Will Deacon
2014-12-22 10:10 ` Pratyush Anand
2014-12-22 10:10 ` Pratyush Anand
2014-11-18 6:32 ` [PATCH v3 2/5] arm64: Kprobes instruction simulation support David Long
2014-11-18 6:32 ` David Long
2014-11-18 14:43 ` William Cohen
2014-11-18 14:43 ` William Cohen
2014-11-18 6:32 ` [PATCH v3 3/5] arm64: Add kernel return probes support(kretprobes) David Long
2014-11-18 6:32 ` David Long
2014-11-18 14:50 ` William Cohen
2014-11-18 14:50 ` William Cohen
2014-11-18 6:32 ` [PATCH v3 4/5] kprobes: Add arm64 case in kprobe example module David Long
2014-11-18 6:32 ` David Long
2014-11-18 6:32 ` [PATCH v3 5/5] arm64: Add HAVE_REGS_AND_STACK_ACCESS_API feature David Long
2014-11-18 6:32 ` David Long
2014-11-18 14:52 ` Will Deacon
2014-11-18 14:52 ` Will Deacon
2014-11-20 7:20 ` Masami Hiramatsu
2014-11-20 7:20 ` Masami Hiramatsu
2014-11-21 6:16 ` David Long
2014-11-21 6:16 ` David Long
2014-11-20 15:02 ` [PATCH v3 0/5] ARM64: Add kernel probes(Kprobes) support Steve Capper
2014-11-20 15:02 ` Steve Capper
2014-11-26 8:33 ` Masami Hiramatsu
2014-11-26 8:33 ` Masami Hiramatsu
2014-11-26 10:03 ` Steve Capper
2014-11-26 10:03 ` Steve Capper
2014-11-26 17:46 ` David Long
2014-11-26 17:46 ` David Long
2014-11-26 18:59 ` Steve Capper
2014-11-26 18:59 ` Steve Capper
2014-11-27 6:07 ` Masami Hiramatsu [this message]
2014-11-27 6:07 ` Masami Hiramatsu
2014-11-28 16:01 ` Steve Capper
2014-11-28 16:01 ` Steve Capper
2014-12-01 9:37 ` Masami Hiramatsu
2014-12-01 9:37 ` Re: " Masami Hiramatsu
2014-12-02 19:27 ` William Cohen
2014-12-02 19:27 ` William Cohen
2014-12-02 20:00 ` William Cohen
2014-12-02 20:00 ` William Cohen
2014-12-03 3:36 ` Masami Hiramatsu
2014-12-03 3:36 ` Masami Hiramatsu
2014-12-03 14:54 ` William Cohen
2014-12-03 14:54 ` William Cohen
2014-12-03 22:54 ` David Long
2014-12-03 22:54 ` David Long
2014-12-04 0:02 ` David Long
2014-12-04 0:02 ` David Long
2014-12-04 1:16 ` William Cohen
2014-12-04 1:16 ` William Cohen
2014-12-04 2:48 ` David Long
2014-12-04 2:48 ` David Long
2014-12-04 10:21 ` Steve Capper
2014-12-04 10:21 ` Steve Capper
2014-12-04 10:43 ` Masami Hiramatsu
2014-12-04 10:43 ` Masami Hiramatsu
2014-12-04 11:29 ` Steve Capper
2014-12-04 11:29 ` Steve Capper
2014-12-04 11:53 ` Masami Hiramatsu
2014-12-04 11:53 ` Masami Hiramatsu
2014-12-09 13:33 ` Steve Capper
2014-12-09 13:33 ` Steve Capper
2014-12-09 14:27 ` David Long
2014-12-09 14:27 ` David Long
2014-12-10 16:38 ` Steve Capper
2014-12-10 16:38 ` Steve Capper
2014-12-12 22:42 ` David Long
2014-12-12 22:42 ` David Long
2014-12-12 23:10 ` Steve Capper
2014-12-12 23:10 ` Steve Capper
2014-12-15 5:58 ` Masami Hiramatsu
2014-12-15 5:58 ` Masami Hiramatsu
2014-12-15 6:29 ` David Long
2014-12-15 6:29 ` David Long
2014-12-05 5:08 ` William Cohen
2014-12-05 5:08 ` William Cohen
2014-11-27 5:13 ` Masami Hiramatsu
2014-11-27 5:13 ` Masami Hiramatsu
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