linux-kernel - Re: [PATCH] riscv: Fix kernel crash due to PR_SET_TAGGED_ADDR

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Message-Id: 
 <174672313099.2976395.17884540800538496278.git-patchwork-notify@kernel.org>
Date: Thu, 08 May 2025 16:52:10 +0000
From: patchwork-bot+linux-riscv@...nel.org
To: Nam Cao <namcao@...utronix.de>
Cc: linux-riscv@...ts.infradead.org, paul.walmsley@...ive.com,
 palmer@...belt.com, aou@...s.berkeley.edu, alex@...ti.fr,
 samuel.holland@...ive.com, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Subject: Re: [PATCH] riscv: Fix kernel crash due to PR_SET_TAGGED_ADDR_CTRL

Hello:

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

On Sun,  4 May 2025 12:19:20 +0200 you wrote:
> When userspace does PR_SET_TAGGED_ADDR_CTRL, but Supm extension is not
> available, the kernel crashes:
> 
> Oops - illegal instruction [#1]
>     [snip]
> epc : set_tagged_addr_ctrl+0x112/0x15a
>  ra : set_tagged_addr_ctrl+0x74/0x15a
> epc : ffffffff80011ace ra : ffffffff80011a30 sp : ffffffc60039be10
>     [snip]
> status: 0000000200000120 badaddr: 0000000010a79073 cause: 0000000000000002
>     set_tagged_addr_ctrl+0x112/0x15a
>     __riscv_sys_prctl+0x352/0x73c
>     do_trap_ecall_u+0x17c/0x20c
>     andle_exception+0x150/0x15c
> 
> [...]

Here is the summary with links:
  - riscv: Fix kernel crash due to PR_SET_TAGGED_ADDR_CTRL
    https://git.kernel.org/riscv/c/ae08d55807c0

You are awesome, thank you!
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