Re: [PATCH v2] riscv: entry: always initialize regs->a0 to -ENOSYS - patchwork-bot+linux-riscv

From: patchwork-bot+linux-riscv@kernel.org
To: Celeste Liu <coelacanthushex@gmail.com>
Cc: linux-riscv@lists.infradead.org, bjorn@rivosinc.com,
	linux-kernel@vger.kernel.org, ldv@strace.io, guoren@kernel.org,
	palmer@rivosinc.com, emil.renner.berthing@canonical.com,
	felixonmars@archlinux.org, c141028@gmail.com,
	CoelacanthusHex@gmail.com, stable@vger.kernel.org
Subject: Re: [PATCH v2] riscv: entry: always initialize regs->a0 to -ENOSYS
Date: Thu, 15 Aug 2024 17:50:35 +0000	[thread overview]
Message-ID: <172374423527.2967007.4867324910866661414.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20240627142338.5114-2-CoelacanthusHex@gmail.com>

Hello:

This patch was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <palmer@rivosinc.com>:

On Thu, 27 Jun 2024 22:23:39 +0800 you wrote:
> Otherwise when the tracer changes syscall number to -1, the kernel fails
> to initialize a0 with -ENOSYS and subsequently fails to return the error
> code of the failed syscall to userspace. For example, it will break
> strace syscall tampering.
> 
> Fixes: 52449c17bdd1 ("riscv: entry: set a0 = -ENOSYS only when syscall != -1")
> Reported-by: "Dmitry V. Levin" <ldv@strace.io>
> Reviewed-by: Björn Töpel <bjorn@rivosinc.com>
> Cc: stable@vger.kernel.org
> Signed-off-by: Celeste Liu <CoelacanthusHex@gmail.com>
> 
> [...]

Here is the summary with links:
  - [v2] riscv: entry: always initialize regs->a0 to -ENOSYS
    https://git.kernel.org/riscv/c/61119394631f

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html

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