linux-kernel - Re: [PATCH v3] riscv: Only consider swbp/ss handlers for correct privileged mode

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Message-Id: <169529342391.31237.16052864619241534837.git-patchwork-notify@kernel.org>
Date:   Thu, 21 Sep 2023 10:50:23 +0000
From:   patchwork-bot+linux-riscv@...nel.org
To:     Björn Töpel <bjorn@...nel.org>@ci.codeaurora.org
Cc:     linux-riscv@...ts.infradead.org, paul.walmsley@...ive.com,
        palmer@...belt.com, aou@...s.berkeley.edu, guoren@...nel.org,
        bjorn@...osinc.com, linux-kernel@...r.kernel.org,
        linux-trace-kernel@...r.kernel.org, namcaov@...il.com,
        puranjay12@...il.com
Subject: Re: [PATCH v3] riscv: Only consider swbp/ss handlers for correct
 privileged mode

Hello:

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

On Tue, 12 Sep 2023 08:56:19 +0200 you wrote:
> From: Björn Töpel <bjorn@...osinc.com>
> 
> RISC-V software breakpoint trap handlers are used for {k,u}probes.
> 
> When trapping from kernelmode, only the kernelmode handlers should be
> considered. Vice versa, only usermode handlers for usermode
> traps. This is not the case on RISC-V, which can trigger a bug if a
> userspace process uses uprobes, and a WARN() is triggered from
> kernelmode (which is implemented via {c.,}ebreak).
> 
> [...]

Here is the summary with links:
  - [v3] riscv: Only consider swbp/ss handlers for correct privileged mode
    https://git.kernel.org/riscv/c/9f564b92cf6d

You are awesome, thank you!
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