linux-kernel - Re: [PATCH] coccinelle: misc: secs_to_jiffies: Implement context and report modes

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 for Android: free password hash cracker in your pocket

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

Message-ID: <00e40c21-4797-41df-b082-318f474f76ae@linux.microsoft.com>
Date: Tue, 10 Jun 2025 10:49:21 -0700
From: Easwar Hariharan <eahariha@...ux.microsoft.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
 Ricardo Ribalda <ribalda@...omium.org>, Jakub Kicinski <kuba@...nel.org>
Cc: eahariha@...ux.microsoft.com, Julia Lawall <Julia.Lawall@...ia.fr>,
 Nicolas Palix <nicolas.palix@...g.fr>, "cocci@...ia.fr" <cocci@...ia.fr>,
 LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] coccinelle: misc: secs_to_jiffies: Implement context and
 report modes

On 6/10/2025 10:45 AM, Easwar Hariharan wrote:
> As requested by Ricardo and Jakub, implement report and context  modes
> for the secs_to_jiffies Coccinelle script. While here, add the option to
> look for opportunities to use secs_to_jiffies() in headers.
> 
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Jakub Kicinski <kuba@...nel.org>
> Cc: Ricardo Ribalda <ribalda@...omium.org>
> Closes: https://lore.kernel.org/all/20250129-secs_to_jiffles-v1-1-35a5e16b9f03@chromium.org/
> Closes: https://lore.kernel.org/all/20250221162107.409ae333@kernel.org/
> Signed-off-by: Easwar Hariharan <eahariha@...ux.microsoft.com>
> ---
>  scripts/coccinelle/misc/secs_to_jiffies.cocci | 49 +++++++++++++++++--
>  1 file changed, 44 insertions(+), 5 deletions(-)
> 
> diff --git a/scripts/coccinelle/misc/secs_to_jiffies.cocci b/scripts/coccinelle/misc/secs_to_jiffies.cocci
> index 416f348174ca..f3241ce75a7b 100644
> --- a/scripts/coccinelle/misc/secs_to_jiffies.cocci
> +++ b/scripts/coccinelle/misc/secs_to_jiffies.cocci
> @@ -7,26 +7,65 @@
>  // Confidence: High
>  // Copyright: (C) 2024 Easwar Hariharan, Microsoft
>  // Keywords: secs, seconds, jiffies
> -//
> +// Options: --include-headers
>  
>  virtual patch
> +virtual report
> +virtual context
>  
> -@...ends on patch@ constant C; @@
> +@...nst depends on patch@ constant C; @@
>  
>  - msecs_to_jiffies(C * 1000)
>  + secs_to_jiffies(C)
>  
> -@...ends on patch@ constant C; @@
> +@...nstms depends on patch@ constant C; @@
>  
>  - msecs_to_jiffies(C * MSEC_PER_SEC)
>  + secs_to_jiffies(C)
>  
> -@...ends on patch@ expression E; @@
> +@...pr depends on patch@ expression E; @@
>  
>  - msecs_to_jiffies(E * 1000)
>  + secs_to_jiffies(E)
>  
> -@...ends on patch@ expression E; @@
> +@...prms depends on patch@ expression E; @@
>  
>  - msecs_to_jiffies(E * MSEC_PER_SEC)
>  + secs_to_jiffies(E)
> +
> +@r depends on report && !patch@
> +constant C;
> +expression E;
> +position p;
> +@@
> +
> +(
> +  msecs_to_jiffies(C@p * 1000)
> +|
> +  msecs_to_jiffies(C@p * MSEC_PER_SEC)
> +|
> +  msecs_to_jiffies(E@p * 1000)
> +|
> +  msecs_to_jiffies(E@p * MSEC_PER_SEC)
> +)
> +
> +@c depends on context && !patch@
> +constant C;
> +expression E;
> +@@
> +
> +(
> +* msecs_to_jiffies(C * 1000)
> +|
> +* msecs_to_jiffies(C * MSEC_PER_SEC)
> +|
> +* msecs_to_jiffies(E * 1000)
> +|
> +* msecs_to_jiffies(E * MSEC_PER_SEC)
> +)
> +
> +@...ipt:python depends on report@
> +p << r.p;
> +@@
> +
> +coccilib.report.print_report(p[0], "WARNING opportunity for secs_to_jiffies()")

Sorry, I was testing sending this to myself before sending to the list, I've added the mailing lists now.

Thanks,
Easwar (he/him)