From: Jessica Yu <jeyu@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
keescook@chromium.org, Josh Poimboeuf <jpoimboe@redhat.com>,
Miroslav Benes <mbenes@suse.cz>
Subject: Re: [PATCH v2] module: Harden STRICT_MODULE_RWX
Date: Wed, 8 Apr 2020 18:20:42 +0200 [thread overview]
Message-ID: <20200408162041.GA18334@linux-8ccs.fritz.box> (raw)
In-Reply-To: <20200408155719.GQ20730@hirez.programming.kicks-ass.net>
+++ Peter Zijlstra [08/04/20 17:57 +0200]:
[..snip..]
>> Just to clarify, did we want to enforce this only when
>> CONFIG_STRICT_MODULE_RWX=y? Because here it's still in the
>> CONFIG_ARCH_HAS_STRICT_MODULE_RWX block.
>>
>> Unfortunately, when we add module_enforce_rwx_sections() in the
>> CONFIG_STRICT_MODULE_RWX block, we'll need two empty stubs, one for
>> !CONFIG_ARCH_HAS_STRICT_MODULE_RWX and one for !CONFIG_STRICT_MODULE_RWX.
>>
>> This is because the CONFIG_STRICT_MODULE_RWX block is currently nested
>> within ARCH_HAS_STRICT_MODULE_RWX :/
>
>Yeah, so the primary reason it's under that ARCH_HAS thing is indeed the
>mess and the extra stub required (I'm a lazy sod at times).
Heh :-)
>I then rationalized this decision to myself that having it under
>ARCH_HAS give a more consistent module loading behaviour.
>
>But I really don't care too much, my most my .config's have
>CONFIG_MODULE=n, and the ones that do not very much have the STRICT_RWX
>set.
>
>Put it where you think it's best.
I don't really mind either way, but my gut tells me I should just move
that hunk under STRICT_MODULE_RWX just to be consistent with STRICT
vs. non STRICT semantics. No need to respin, I'll rebase after I queue
the other patch.
Thanks!
Jessica
next prev parent reply other threads:[~2020-04-08 16:20 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-03 17:13 [PATCH v2] module: Harden STRICT_MODULE_RWX Peter Zijlstra
2020-04-03 20:31 ` Kees Cook
2020-04-08 15:32 ` Jessica Yu
2020-04-08 15:43 ` [PATCH] module: break nested ARCH_HAS_STRICT_MODULE_RWX and STRICT_MODULE_RWX #ifdefs Jessica Yu
2020-04-08 15:57 ` [PATCH v2] module: Harden STRICT_MODULE_RWX Peter Zijlstra
2020-04-08 16:20 ` Jessica Yu [this message]
2020-08-08 8:12 ` Mauro Carvalho Chehab
2020-08-10 9:25 ` Jessica Yu
2020-08-10 15:06 ` Jessica Yu
2020-08-11 14:34 ` Mauro Carvalho Chehab
2020-08-11 14:55 ` peterz
2020-08-11 15:27 ` Mauro Carvalho Chehab
2020-08-11 16:01 ` Jessica Yu
2020-08-11 16:57 ` Will Deacon
2020-08-11 17:59 ` peterz
2020-08-11 21:29 ` Peter Zijlstra
2020-08-12 8:56 ` Ard Biesheuvel
2020-08-12 10:40 ` peterz
2020-08-12 11:41 ` Jessica Yu
2020-08-12 13:14 ` H.J. Lu
2020-08-12 12:56 ` Will Deacon
2020-08-12 14:15 ` Szabolcs Nagy
2020-08-12 16:00 ` Jessica Yu
2020-08-12 16:37 ` Ard Biesheuvel
2020-08-12 16:42 ` Szabolcs Nagy
2020-08-13 9:00 ` Will Deacon
2020-08-12 20:00 ` Peter Zijlstra
2020-08-13 8:36 ` Ard Biesheuvel
2020-08-13 13:04 ` Jessica Yu
2020-08-13 13:07 ` Ard Biesheuvel
2020-08-21 12:20 ` Will Deacon
2020-08-21 12:27 ` Ard Biesheuvel
2020-08-21 12:30 ` Will Deacon
2020-08-22 13:47 ` Ard Biesheuvel
2020-08-24 15:24 ` Jessica Yu
2020-08-25 1:54 ` Masahiro Yamada
2020-08-31 9:46 ` Jessica Yu
2020-08-31 10:42 ` Masahiro Yamada
2020-08-31 13:25 ` Ard Biesheuvel
2020-08-31 15:31 ` Jessica Yu
2020-08-31 15:46 ` Masahiro Yamada
2020-09-03 12:37 ` Jessica Yu
2020-09-01 12:51 ` Will Deacon
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