linux-kernel - Re: [PATCH v5 1/2] uprobes: Remove redundant spinlock in uprobe_deny

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Message-ID: <20250124173807.GA2542@redhat.com>
Date: Fri, 24 Jan 2025 18:38:07 +0100
From: Oleg Nesterov <oleg@...hat.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Liao Chang <liaochang1@...wei.com>, mhiramat@...nel.org,
	peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
	namhyung@...nel.org, mark.rutland@....com,
	alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
	irogers@...gle.com, adrian.hunter@...el.com,
	kan.liang@...ux.intel.com, andrii.nakryiko@...il.com,
	linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH v5 1/2] uprobes: Remove redundant spinlock in
 uprobe_deny_signal()

On 01/24, Oleg Nesterov wrote:
>
> But I still think this patch is fine. The current task is going to execute
> a single insn which can't enter the kernel and/or return to the userspace
                      ^^^^^^^^^^^^^^^^^^^^^^
I mean't, it can't do syscall, sorry for the possible confusion.

Oleg.