From: Song Liu <song@kernel.org>
To: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
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Subject: Re: [PATCH] kprobes: Enable tracing for mololithic kernel images
Date: Thu, 9 Jun 2022 15:48:17 -0700 [thread overview]
Message-ID: <CAPhsuW4rF1cFmdSUZD=Tw4QRmOf=v+V_2EhEphzJA5teqOrH0Q@mail.gmail.com> (raw)
In-Reply-To: <e7dedb9086193ca7682edc10fabc4195894e5146.camel@intel.com>
On Thu, Jun 9, 2022 at 11:41 AM Edgecombe, Rick P
<rick.p.edgecombe@intel.com> wrote:
>
> On Thu, 2022-06-09 at 06:24 -0700, Luis Chamberlain wrote:
[...]
>
> Like say for a next step we moved prog pack out of bpf into core code,
> gave it it's own copy of module_alloc(), and then made kprobes use it.
> Then we would have something with improved W^X guard rails, and kprobes
> would not depend on modules anymore. I think maybe it's a step in the
> right direction, even if it's not perfect.
I was also thinking about where to put the prog pack allocator eventually.
Shall it be part of mm code or module code?
Btw, prog pack has more challenges with W^X requirement:
1. The arch need to have text poke mechanism;
2. Some users of prog pack need to learn to use the ROXbuffer with text poke,
for example, how to calculate relative address differently.
Thanks,
Song
next prev parent reply other threads:[~2022-06-09 22:48 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-07 23:59 [PATCH] kprobes: Enable tracing for mololithic kernel images Jarkko Sakkinen
2022-06-08 2:35 ` Guo Ren
2022-06-08 5:25 ` Jarkko Sakkinen
2022-06-08 14:21 ` Masami Hiramatsu
2022-06-08 16:12 ` Song Liu
2022-06-08 18:20 ` Song Liu
2022-06-08 20:26 ` Luis Chamberlain
2022-06-09 3:48 ` Christoph Hellwig
2022-06-09 13:24 ` Luis Chamberlain
2022-06-09 18:41 ` Edgecombe, Rick P
2022-06-09 22:48 ` Song Liu [this message]
2022-06-14 12:32 ` jarkko
2022-06-15 6:37 ` hch
2022-06-15 21:29 ` jarkko
2022-06-09 13:12 ` Jarkko Sakkinen
2022-06-09 13:23 ` Ard Biesheuvel
2022-06-12 12:18 ` Masami Hiramatsu
2022-06-14 10:54 ` Jarkko Sakkinen
[not found] ` <f7ff2a8d-4128-dac9-9768-1d98bfb06a06@csgroup.eu>
2022-06-09 22:23 ` Song Liu
2022-06-09 12:59 ` Jarkko Sakkinen
2022-06-08 16:27 ` Ard Biesheuvel
2022-06-08 18:19 ` Song Liu
2022-06-12 12:30 ` Masami Hiramatsu
2022-06-14 12:30 ` Jarkko Sakkinen
2022-06-09 5:37 ` Jarkko Sakkinen
2022-06-09 7:47 ` Russell King (Oracle)
2022-06-09 11:48 ` Jarkko Sakkinen
2022-06-09 13:44 ` Luis Chamberlain
2022-06-14 12:26 ` Jarkko Sakkinen
[not found] ` <144b7e90-5d75-7e2c-4e54-8a73f914dfdf@csgroup.eu>
2022-06-15 21:24 ` Jarkko Sakkinen
[not found] ` <f2030fb4-4978-068b-6250-5bd5b2746675@csgroup.eu>
2022-06-09 12:57 ` Jarkko Sakkinen
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