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From: Nam Cao <namcao@linutronix.de>
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To: Matthew Bystrin <dev.mbstr@gmail.com>, Jiakai Xu
 <xujiakai2025@iscas.ac.cn>, linux-kernel@vger.kernel.org,
 linux-riscv@lists.infradead.org
Cc: Albert Ou <aou@eecs.berkeley.edu>, Alexandre Ghiti <alex@ghiti.fr>,
 Chunyan Zhang <zhangchunyan@iscas.ac.cn>, Matthew Bystrin
 <dev.mbstr@gmail.com>, Palmer Dabbelt <palmer@dabbelt.com>, Paul
 Walmsley <pjw@kernel.org>, Samuel Holland <samuel.holland@sifive.com>
Subject: Re: [PATCH v2] riscv: stacktrace: fix stack-out-of-bounds in
 walk_stackframe()
In-Reply-To: <DIM3B5ZM2WCI.27FLMTRS5IYNN@gmail.com>
References: <20260517143704.659416-1-xujiakai2025@iscas.ac.cn>
 <DIM3B5ZM2WCI.27FLMTRS5IYNN@gmail.com>
Date: Fri, 19 Jun 2026 11:11:25 +0200
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Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org

"Matthew Bystrin" <dev.mbstr@gmail.com> writes:
>> +	high = (unsigned long)task_pt_regs(task);
>
> After noticing end_of_stack() function I'm not sure task_pt_regs() is the best
> candidate for the boundary. Let's see what maintainers are going to say.

end_of_stack() is the lower bound of the stack, that's not what we want.

Nam

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