Re: [PATCH] riscv: Disallow PR_GET_TAGGED_ADDR_CTRL without Supm - patchwork-bot+linux-riscv

From: patchwork-bot+linux-riscv@kernel.org
To: Samuel Holland <samuel.holland@sifive.com>
Cc: linux-riscv@lists.infradead.org, alex@ghiti.fr,
	palmer@dabbelt.com, aou@eecs.berkeley.edu, bodonnel@redhat.com,
	charlie@rivosinc.com, conor.dooley@microchip.com,
	joel.granados@kernel.org, paul.walmsley@sifive.com,
	cuiyunhui@bytedance.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] riscv: Disallow PR_GET_TAGGED_ADDR_CTRL without Supm
Date: Thu, 08 May 2025 16:52:08 +0000	[thread overview]
Message-ID: <174672312824.2976395.79446860575493569.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20250507145230.2272871-1-samuel.holland@sifive.com>

Hello:

This patch was applied to riscv/linux.git (fixes)
by Alexandre Ghiti <alexghiti@rivosinc.com>:

On Wed,  7 May 2025 07:52:18 -0700 you wrote:
> When the prctl() interface for pointer masking was added, it did not
> check that the pointer masking ISA extension was supported, only the
> individual submodes. Userspace could still attempt to disable pointer
> masking and query the pointer masking state. commit 81de1afb2dd1
> ("riscv: Fix kernel crash due to PR_SET_TAGGED_ADDR_CTRL") disallowed
> the former, as the senvcfg write could crash on older systems.
> PR_GET_TAGGED_ADDR_CTRL state does not crash, because it reads only
> kernel-internal state and not senvcfg, but it should still be disallowed
> for consistency.
> 
> [...]

Here is the summary with links:
  - riscv: Disallow PR_GET_TAGGED_ADDR_CTRL without Supm
    https://git.kernel.org/riscv/c/7f1c3de1370b

You are awesome, thank you!
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