Re: [PATCH] uprobes: Use synchronize_rcu() not synchronize_sched()

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Subject: Re: [PATCH] uprobes: Use synchronize_rcu() not synchronize_sched()
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Date: Fri, 10 Aug 2018 13:42:02 +0200
Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>, "zhangwei(Jovi)" <jovi.zhangwei@xxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, stable <stable@xxxxxxxxxxxxxxx>
In-reply-to: <20180810113548.GA3677@redhat.com>
User-agent: Mutt/1.5.24 (2015-08-30)

On 08/10, Oleg Nesterov wrote:
>
> @@ -920,7 +918,8 @@ probe_event_enable(struct trace_uprobe *
>  	ret = uprobe_register(tu->inode, tu->offset, &tu->consumer);
>  	if (ret)
>  		goto err_buffer;
> -
> + add:
> +	list_add_tail_rcu(&link->list, &tu->tp.files);

	if (link)
		list_add_tail_rcu(&link->list, &tu->tp.files);

Oleg.

References:
- [PATCH] uprobes: Use synchronize_rcu() not synchronize_sched()
  - From: Steven Rostedt
- Re: [PATCH] uprobes: Use synchronize_rcu() not synchronize_sched()
  - From: Oleg Nesterov

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