linux-kernel - Re: [PATCH 5/6] eventfs: get rid of dentry pointers without refcounts

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Date: Wed, 31 Jan 2024 00:48:05 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6] eventfs: get rid of dentry pointers without refcounts

On Tue, Jan 30, 2024 at 11:03:54AM -0800, Linus Torvalds wrote:

>  	inode = tracefs_get_inode(dentry->d_sb);
>  	if (unlikely(!inode))
> -		return eventfs_failed_creating(dentry);
> +		return ERR_PTR(-ENOMEM);

That belongs in the lookup crapectomy patch - bisect hazard from stray dput().
Same for similar chunks below.