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Message-Id:
<172374423527.2967007.4867324910866661414.git-patchwork-notify@kernel.org>
Date: Thu, 15 Aug 2024 17:50:35 +0000
From: patchwork-bot+linux-riscv@...nel.org
To: Celeste Liu <coelacanthushex@...il.com>
Cc: linux-riscv@...ts.infradead.org, bjorn@...osinc.com,
linux-kernel@...r.kernel.org, ldv@...ace.io, guoren@...nel.org,
palmer@...osinc.com, emil.renner.berthing@...onical.com,
felixonmars@...hlinux.org, c141028@...il.com, CoelacanthusHex@...il.com,
stable@...r.kernel.org
Subject: Re: [PATCH v2] riscv: entry: always initialize regs->a0 to -ENOSYS
Hello:
This patch was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <palmer@...osinc.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@...ace.io>
> Reviewed-by: Björn Töpel <bjorn@...osinc.com>
> Cc: stable@...r.kernel.org
> Signed-off-by: Celeste Liu <CoelacanthusHex@...il.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!
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