From: Sami Tolvanen <samitolvanen@google.com>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Eric Biggers <ebiggers@kernel.org>,
Miles Chen <miles.chen@mediatek.com>,
Ard Biesheuvel <ardb@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"moderated list:ARM/Mediatek SoC..."
<linux-mediatek@lists.infradead.org>,
Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: [PATCH] lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI
Date: Fri, 21 Jan 2022 12:51:40 -0800 [thread overview]
Message-ID: <CABCJKuf=eHuFfNjD-7FBTeft3XNTkEc4G9cDvYpMJgH_se12eg@mail.gmail.com> (raw)
In-Reply-To: <CAHmME9ow7TxCaYYayRn9rdJJSdQ48tWQgdrW00g7mHaWvVJ+Zw@mail.gmail.com>
Hi Jason,
On Fri, Jan 21, 2022 at 12:23 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
>
> On Fri, Jan 21, 2022 at 8:54 PM Eric Biggers <ebiggers@kernel.org> wrote:
> > There are some lines over 80 columns in this patch.
>
> I'll fix that up.
>
> > Otherwise this looks fine. It would be really nice to fix this in clang,
> > though.
>
> I agree. I'm wondering whether it makes sense to roll with this patch,
> or to just not change anything and lean on Clang upstream to fix their
> bug. Full LTO is marked as "experimental" still. On the other hand,
> Android ships with it turned on, so how "experimental" can it really
> be? I don't have a strong read on the Clang ecosystem to know what
> makes most sense, to apply this or not. Do you have an opinion?
We'll work on fixing the compiler, but please note that it's most
likely going to take a while, so I would prefer to work around the
issue in the kernel for now.
Sami
WARNING: multiple messages have this Message-ID (diff)
From: Sami Tolvanen <samitolvanen@google.com>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Eric Biggers <ebiggers@kernel.org>,
Miles Chen <miles.chen@mediatek.com>,
Ard Biesheuvel <ardb@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"moderated list:ARM/Mediatek SoC..."
<linux-mediatek@lists.infradead.org>,
Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: [PATCH] lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI
Date: Fri, 21 Jan 2022 12:51:40 -0800 [thread overview]
Message-ID: <CABCJKuf=eHuFfNjD-7FBTeft3XNTkEc4G9cDvYpMJgH_se12eg@mail.gmail.com> (raw)
In-Reply-To: <CAHmME9ow7TxCaYYayRn9rdJJSdQ48tWQgdrW00g7mHaWvVJ+Zw@mail.gmail.com>
Hi Jason,
On Fri, Jan 21, 2022 at 12:23 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
>
> On Fri, Jan 21, 2022 at 8:54 PM Eric Biggers <ebiggers@kernel.org> wrote:
> > There are some lines over 80 columns in this patch.
>
> I'll fix that up.
>
> > Otherwise this looks fine. It would be really nice to fix this in clang,
> > though.
>
> I agree. I'm wondering whether it makes sense to roll with this patch,
> or to just not change anything and lean on Clang upstream to fix their
> bug. Full LTO is marked as "experimental" still. On the other hand,
> Android ships with it turned on, so how "experimental" can it really
> be? I don't have a strong read on the Clang ecosystem to know what
> makes most sense, to apply this or not. Do you have an opinion?
We'll work on fixing the compiler, but please note that it's most
likely going to take a while, so I would prefer to work around the
issue in the kernel for now.
Sami
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
WARNING: multiple messages have this Message-ID (diff)
From: Sami Tolvanen <samitolvanen@google.com>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Eric Biggers <ebiggers@kernel.org>,
Miles Chen <miles.chen@mediatek.com>,
Ard Biesheuvel <ardb@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"moderated list:ARM/Mediatek SoC..."
<linux-mediatek@lists.infradead.org>,
Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: [PATCH] lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI
Date: Fri, 21 Jan 2022 12:51:40 -0800 [thread overview]
Message-ID: <CABCJKuf=eHuFfNjD-7FBTeft3XNTkEc4G9cDvYpMJgH_se12eg@mail.gmail.com> (raw)
In-Reply-To: <CAHmME9ow7TxCaYYayRn9rdJJSdQ48tWQgdrW00g7mHaWvVJ+Zw@mail.gmail.com>
Hi Jason,
On Fri, Jan 21, 2022 at 12:23 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
>
> On Fri, Jan 21, 2022 at 8:54 PM Eric Biggers <ebiggers@kernel.org> wrote:
> > There are some lines over 80 columns in this patch.
>
> I'll fix that up.
>
> > Otherwise this looks fine. It would be really nice to fix this in clang,
> > though.
>
> I agree. I'm wondering whether it makes sense to roll with this patch,
> or to just not change anything and lean on Clang upstream to fix their
> bug. Full LTO is marked as "experimental" still. On the other hand,
> Android ships with it turned on, so how "experimental" can it really
> be? I don't have a strong read on the Clang ecosystem to know what
> makes most sense, to apply this or not. Do you have an opinion?
We'll work on fixing the compiler, but please note that it's most
likely going to take a while, so I would prefer to work around the
issue in the kernel for now.
Sami
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-01-21 20:51 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-19 8:24 [PATCH] lib/crypto: blake2s: fix a CFI failure miles.chen
2022-01-19 8:24 ` miles.chen
2022-01-19 8:24 ` miles.chen
2022-01-19 9:00 ` Jason A. Donenfeld
2022-01-19 9:00 ` Jason A. Donenfeld
2022-01-19 9:00 ` Jason A. Donenfeld
2022-01-19 9:09 ` Jason A. Donenfeld
2022-01-19 9:09 ` Jason A. Donenfeld
2022-01-19 9:09 ` Jason A. Donenfeld
2022-01-19 9:16 ` Miles Chen
2022-01-19 9:16 ` Miles Chen
2022-01-19 9:16 ` Miles Chen
2022-01-19 9:09 ` Ard Biesheuvel
2022-01-19 9:09 ` Ard Biesheuvel
2022-01-19 9:09 ` Ard Biesheuvel
2022-01-19 9:13 ` Ard Biesheuvel
2022-01-19 9:13 ` Ard Biesheuvel
2022-01-19 9:13 ` Ard Biesheuvel
2022-01-19 9:43 ` Miles Chen
2022-01-19 9:43 ` Miles Chen
2022-01-19 9:43 ` Miles Chen
2022-01-19 10:10 ` Miles Chen
2022-01-19 10:10 ` Miles Chen
2022-01-19 10:10 ` Miles Chen
2022-01-19 9:24 ` Miles Chen
2022-01-19 9:24 ` Miles Chen
2022-01-19 9:24 ` Miles Chen
2022-01-19 9:55 ` Jason A. Donenfeld
2022-01-19 9:55 ` Jason A. Donenfeld
2022-01-19 9:55 ` Jason A. Donenfeld
2022-01-19 10:06 ` Miles Chen
2022-01-19 10:06 ` Miles Chen
2022-01-19 10:06 ` Miles Chen
2022-01-19 10:11 ` Jason A. Donenfeld
2022-01-19 10:11 ` Jason A. Donenfeld
2022-01-19 10:11 ` Jason A. Donenfeld
2022-01-19 10:56 ` Jason A. Donenfeld
2022-01-19 10:56 ` Jason A. Donenfeld
2022-01-19 10:56 ` Jason A. Donenfeld
2022-01-19 12:14 ` Jason A. Donenfeld
2022-01-19 12:14 ` Jason A. Donenfeld
2022-01-19 12:14 ` Jason A. Donenfeld
2022-01-19 12:18 ` Ard Biesheuvel
2022-01-19 12:18 ` Ard Biesheuvel
2022-01-19 12:18 ` Ard Biesheuvel
2022-01-19 13:34 ` Jason A. Donenfeld
2022-01-19 13:34 ` Jason A. Donenfeld
2022-01-19 13:34 ` Jason A. Donenfeld
2022-01-19 13:54 ` [PATCH] lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI Jason A. Donenfeld
2022-01-19 13:54 ` Jason A. Donenfeld
2022-01-19 13:54 ` Jason A. Donenfeld
2022-01-19 14:46 ` Miles Chen
2022-01-19 14:46 ` Miles Chen
2022-01-19 14:46 ` Miles Chen
2022-01-19 22:24 ` Nathan Chancellor
2022-01-19 22:24 ` Nathan Chancellor
2022-01-19 22:24 ` Nathan Chancellor
2022-01-20 9:44 ` Jason A. Donenfeld
2022-01-20 9:44 ` Jason A. Donenfeld
2022-01-20 9:44 ` Jason A. Donenfeld
2022-01-21 19:54 ` Eric Biggers
2022-01-21 19:54 ` Eric Biggers
2022-01-21 19:54 ` Eric Biggers
2022-01-21 20:22 ` Jason A. Donenfeld
2022-01-21 20:22 ` Jason A. Donenfeld
2022-01-21 20:22 ` Jason A. Donenfeld
2022-01-21 20:51 ` Sami Tolvanen [this message]
2022-01-21 20:51 ` Sami Tolvanen
2022-01-21 20:51 ` Sami Tolvanen
2022-01-24 19:28 ` [PATCH v2] " Jason A. Donenfeld
2022-01-24 19:28 ` Jason A. Donenfeld
2022-01-24 19:59 ` Nick Desaulniers
2022-01-24 19:59 ` Nick Desaulniers
2022-01-25 6:40 ` Eric Biggers
2022-01-25 6:40 ` Eric Biggers
2022-01-25 12:23 ` Jason A. Donenfeld
2022-01-25 12:23 ` Jason A. Donenfeld
2022-01-26 22:54 ` Eric Biggers
2022-01-26 22:54 ` Eric Biggers
2022-01-26 22:51 ` [PATCH] " John Stultz
2022-01-26 22:51 ` John Stultz
2022-01-26 22:51 ` John Stultz
2022-01-19 14:40 ` [PATCH] lib/crypto: blake2s: fix a CFI failure David Laight
2022-01-19 14:40 ` David Laight
2022-01-19 14:40 ` David Laight
2022-01-19 15:03 ` Jason A. Donenfeld
2022-01-19 15:03 ` Jason A. Donenfeld
2022-01-19 15:03 ` Jason A. Donenfeld
2022-01-19 12:34 ` Miles Chen
2022-01-19 12:34 ` Miles Chen
2022-01-19 12:34 ` Miles Chen
2022-01-19 10:13 ` Ard Biesheuvel
2022-01-19 10:13 ` Ard Biesheuvel
2022-01-19 10:13 ` Ard Biesheuvel
2022-01-19 10:20 ` Jason A. Donenfeld
2022-01-19 10:20 ` Jason A. Donenfeld
2022-01-19 10:20 ` Jason A. Donenfeld
2022-01-19 10:35 ` Ard Biesheuvel
2022-01-19 10:35 ` Ard Biesheuvel
2022-01-19 10:35 ` Ard Biesheuvel
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