linux-kernel - Re: [PATCH] proc: report eip and esp for all threads when coredumping

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Message-ID: <20190522171327.GA2111@avx2>
Date:   Wed, 22 May 2019 20:13:27 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     Jan Luebbe <jlu@...gutronix.de>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        John Ogness <john.ogness@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] proc: report eip and esp for all threads when coredumping

On Wed, May 22, 2019 at 06:16:14PM +0200, Jan Luebbe wrote:
> --- a/fs/proc/array.c
> +++ b/fs/proc/array.c
> @@ -462,7 +462,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
>  		 * a program is not able to use ptrace(2) in that case. It is
>  		 * safe because the task has stopped executing permanently.
>  		 */
> -		if (permitted && (task->flags & PF_DUMPCORE)) {
> +		if (permitted && (!!mm->core_state)) {

You don't need both "!!" and "()", it is a regular pointer after all.