All of lore.kernel.org
 help / color / mirror / Atom feed
From: Mark Brown <broonie@kernel.org>
To: madvenka@linux.microsoft.com
Cc: mark.rutland@arm.com, jpoimboe@redhat.com, ardb@kernel.org,
	nobuta.keiya@fujitsu.com, catalin.marinas@arm.com,
	will@kernel.org, jmorris@namei.org, pasha.tatashin@soleen.com,
	jthierry@redhat.com, linux-arm-kernel@lists.infradead.org,
	live-patching@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v5 2/2] arm64: Create a list of SYM_CODE functions, check return PC against list
Date: Fri, 4 Jun 2021 17:59:45 +0100	[thread overview]
Message-ID: <20210604165945.GA39381@sirena.org.uk> (raw)
In-Reply-To: <20210526214917.20099-3-madvenka@linux.microsoft.com>

[-- Attachment #1: Type: text/plain, Size: 656 bytes --]

On Wed, May 26, 2021 at 04:49:17PM -0500, madvenka@linux.microsoft.com wrote:

> + *	- return_to_handler() is handled by the unwinder by attempting to
> + *	  retrieve the original return address from the per-task return
> + *	  address stack.
> + *
> + *	- kretprobe_trampoline() can be handled in a similar fashion by
> + *	  attempting to retrieve the original return address from the per-task
> + *	  kretprobe instance list.
> + *
> + *	- I reckon optprobes can be handled in a similar fashion in the future?

Note that there's a patch for optprobes on the list now:

   https://lore.kernel.org/r/1622803839-27354-1-git-send-email-liuqi115@huawei.com

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: madvenka@linux.microsoft.com
Cc: mark.rutland@arm.com, jpoimboe@redhat.com, ardb@kernel.org,
	nobuta.keiya@fujitsu.com, catalin.marinas@arm.com,
	will@kernel.org, jmorris@namei.org, pasha.tatashin@soleen.com,
	jthierry@redhat.com, linux-arm-kernel@lists.infradead.org,
	live-patching@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v5 2/2] arm64: Create a list of SYM_CODE functions, check return PC against list
Date: Fri, 4 Jun 2021 17:59:45 +0100	[thread overview]
Message-ID: <20210604165945.GA39381@sirena.org.uk> (raw)
In-Reply-To: <20210526214917.20099-3-madvenka@linux.microsoft.com>


[-- Attachment #1.1: Type: text/plain, Size: 656 bytes --]

On Wed, May 26, 2021 at 04:49:17PM -0500, madvenka@linux.microsoft.com wrote:

> + *	- return_to_handler() is handled by the unwinder by attempting to
> + *	  retrieve the original return address from the per-task return
> + *	  address stack.
> + *
> + *	- kretprobe_trampoline() can be handled in a similar fashion by
> + *	  attempting to retrieve the original return address from the per-task
> + *	  kretprobe instance list.
> + *
> + *	- I reckon optprobes can be handled in a similar fashion in the future?

Note that there's a patch for optprobes on the list now:

   https://lore.kernel.org/r/1622803839-27354-1-git-send-email-liuqi115@huawei.com

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

[-- Attachment #2: Type: text/plain, Size: 176 bytes --]

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-06-04 16:59 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <ea0ef9ed6eb34618bcf468fbbf8bdba99e15df7d>
2021-05-26 21:49 ` [RFC PATCH v5 0/2] arm64: Implement stack trace reliability checks madvenka
2021-05-26 21:49   ` madvenka
2021-05-26 21:49   ` [RFC PATCH v5 1/2] arm64: Introduce stack trace reliability checks in the unwinder madvenka
2021-05-26 21:49     ` madvenka
2021-06-24 14:40     ` Mark Rutland
2021-06-24 14:40       ` Mark Rutland
2021-06-24 16:03       ` Mark Brown
2021-06-24 16:03         ` Mark Brown
2021-06-25 15:39       ` Madhavan T. Venkataraman
2021-06-25 15:39         ` Madhavan T. Venkataraman
2021-06-25 15:51         ` Mark Brown
2021-06-25 15:51           ` Mark Brown
2021-06-25 17:05           ` Madhavan T. Venkataraman
2021-06-25 17:05             ` Madhavan T. Venkataraman
2021-06-25 17:18             ` Madhavan T. Venkataraman
2021-06-25 17:18               ` Madhavan T. Venkataraman
2021-06-26 15:35         ` Madhavan T. Venkataraman
2021-06-26 15:35           ` Madhavan T. Venkataraman
2021-06-29 16:47       ` Josh Poimboeuf
2021-06-29 16:47         ` Josh Poimboeuf
2021-05-26 21:49   ` [RFC PATCH v5 2/2] arm64: Create a list of SYM_CODE functions, check return PC against list madvenka
2021-05-26 21:49     ` madvenka
2021-06-04 16:24     ` Mark Brown
2021-06-04 16:24       ` Mark Brown
2021-06-04 20:38       ` Madhavan T. Venkataraman
2021-06-04 20:38         ` Madhavan T. Venkataraman
2021-06-04 16:59     ` Mark Brown [this message]
2021-06-04 16:59       ` Mark Brown
2021-06-04 20:40       ` Madhavan T. Venkataraman
2021-06-04 20:40         ` Madhavan T. Venkataraman
2021-06-16  1:52     ` Suraj Jitindar Singh
2021-06-16  1:52       ` Suraj Jitindar Singh
2021-06-16  9:15       ` nobuta.keiya
2021-06-16  9:15         ` nobuta.keiya
2021-06-16 11:10       ` Madhavan T. Venkataraman
2021-06-16 11:10         ` Madhavan T. Venkataraman
2021-06-04 15:29   ` [RFC PATCH v5 0/2] arm64: Implement stack trace reliability checks Mark Brown
2021-06-04 15:29     ` Mark Brown
2021-06-04 20:44     ` Madhavan T. Venkataraman
2021-06-04 20:44       ` Madhavan T. Venkataraman

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210604165945.GA39381@sirena.org.uk \
    --to=broonie@kernel.org \
    --cc=ardb@kernel.org \
    --cc=catalin.marinas@arm.com \
    --cc=jmorris@namei.org \
    --cc=jpoimboe@redhat.com \
    --cc=jthierry@redhat.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=live-patching@vger.kernel.org \
    --cc=madvenka@linux.microsoft.com \
    --cc=mark.rutland@arm.com \
    --cc=nobuta.keiya@fujitsu.com \
    --cc=pasha.tatashin@soleen.com \
    --cc=will@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.