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Date: Thu, 9 Apr 2026 00:06:57 +0100
From: Al Viro <viro@zeniv.linux.org.uk>
To: Jianzhou Zhao <luckd0g@163.com>
Cc: jack@suse.cz, brauner@kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: KCSAN: data-race in path_lookupat / vfs_rename
Message-ID: <20260408230657.GL3836593@ZenIV>
References: <61ff6def.2d0d.19cdad1307e.Coremail.luckd0g@163.com>
 <20260408230422.GK3836593@ZenIV>
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Sender: Al Viro <viro@ftp.linux.org.uk>

On Thu, Apr 09, 2026 at 12:04:22AM +0100, Al Viro wrote:
> manage to depend upon the order of execution, compiler in question
> needs to be tarred, feathered and shoved up the place where its
> authors heads are.  Sure, theoretically A could be compiled into
> 	lock
sorry, cut'n'paste from the wrong place; should be
	x |= 1;
	x ^= 2;
 	x ^= 2;
> 	unlock
> but who the hell would do something like that?