linux-kernel - Re: [PATCH 1/2] vfs: add tracepoints in inode_set_ctime

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250722211052.6bffc11f@gandalf.local.home>
Date: Tue, 22 Jul 2025 21:10:52 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Jeff Layton <jlayton@...nel.org>
Cc: Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner
 <brauner@...nel.org>, Jan Kara <jack@...e.cz>, Masami Hiramatsu
 <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Chuck Lever <chuck.lever@...cle.com>, NeilBrown <neil@...wn.name>, Olga
 Kornievskaia <okorniev@...hat.com>, Dai Ngo <Dai.Ngo@...cle.com>, Tom
 Talpey <tom@...pey.com>, linux-fsdevel@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
 linux-nfs@...r.kernel.org
Subject: Re: [PATCH 1/2] vfs: add tracepoints in inode_set_ctime_deleg

On Tue, 22 Jul 2025 14:52:27 -0400
Jeff Layton <jlayton@...nel.org> wrote:

> +	TP_fast_assign(
> +		__entry->dev		= inode->i_sb->s_dev;
> +		__entry->ino		= inode->i_ino;
> +		__entry->gen		= inode->i_generation;
> +		__entry->old_s		= old->tv_sec;
> +		__entry->req_s		= req->tv_sec;
> +		__entry->now_s		= now ? now->tv_sec : 0;
> +		__entry->old_ns		= old->tv_nsec;
> +		__entry->req_ns		= req->tv_nsec;
> +		__entry->now_ns		= now ? now->tv_nsec : 0;
> +	),
> +
> +	TP_printk("ino=%d:%d:%ld:%u old=%lld.%u req=%lld.%u now=%lld.%u",

Hmm, wouldn't you want the above to be:

	TP_printk("ino=%d:%d:%ld:%u old=%lld.%09u req=%lld.%09u now=%lld.%09u",

Otherwise the nanosecond part is going to look confusing if it's less that 100,000,000.

-- Steve


> +		MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->gen,
> +		__entry->old_s, __entry->old_ns,
> +		__entry->req_s, __entry->req_ns,
> +		__entry->now_s, __entry->now_ns
> +	)