linux-kernel - Re: [PATCH 01/22] pidfs: use guard() for task

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: <CAJqdLrqy8OoGtzobGdRO=+AqMejesUnYcgzjrk8q4iueHiHJjQ@mail.gmail.com>
Date: Mon, 3 Nov 2025 16:19:55 +0100
From: Alexander Mikhalitsyn <alexander@...alicyn.com>
To: Christian Brauner <brauner@...nel.org>
Cc: linux-fsdevel@...r.kernel.org, Oleg Nesterov <oleg@...hat.com>, 
	Amir Goldstein <amir73il@...il.com>, Aleksa Sarai <cyphar@...har.com>, 
	Yu Watanabe <watanabe.yu+github@...il.com>, Josef Bacik <josef@...icpanda.com>, 
	Jeff Layton <jlayton@...nel.org>, Jann Horn <jannh@...gle.com>, 
	Luca Boccassi <luca.boccassi@...il.com>, linux-kernel@...r.kernel.org, 
	Alexander Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>, 
	Lennart Poettering <lennart@...ttering.net>, Mike Yuan <me@...dnzj.com>, 
	Zbigniew Jędrzejewski-Szmek <zbyszek@...waw.pl>
Subject: Re: [PATCH 01/22] pidfs: use guard() for task_lock

Am Di., 28. Okt. 2025 um 09:46 Uhr schrieb Christian Brauner
<brauner@...nel.org>:
>
> Use a guard().
>
> Signed-off-by: Christian Brauner <brauner@...nel.org>

Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>

> ---
>  fs/pidfs.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/fs/pidfs.c b/fs/pidfs.c
> index 0ef5b47d796a..c2f0b7091cd7 100644
> --- a/fs/pidfs.c
> +++ b/fs/pidfs.c
> @@ -356,13 +356,12 @@ static long pidfd_info(struct file *file, unsigned int cmd, unsigned long arg)
>                 return -ESRCH;
>
>         if ((kinfo.mask & PIDFD_INFO_COREDUMP) && !(kinfo.coredump_mask)) {
> -               task_lock(task);
> +               guard(task_lock)(task);
>                 if (task->mm) {
>                         unsigned long flags = __mm_flags_get_dumpable(task->mm);
>
>                         kinfo.coredump_mask = pidfs_coredump_mask(flags);
>                 }
> -               task_unlock(task);
>         }
>
>         /* Unconditionally return identifiers and credentials, the rest only on request */
>
> --
> 2.47.3
>