linux-kernel - Re: [PATCH 1/7] printk: Hand over printing to console if printing too long

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: <20160106014130.GA781@swordfish>
Date:	Wed, 6 Jan 2016 10:41:50 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Petr Mladek <pmladek@...e.cz>,
	KY Sri nivasan <kys@...rosoft.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] printk: Hand over printing to console if printing
 too long

Hello,

On (01/05/16 15:37), Jan Kara wrote:
> Hi,
> 
> On Wed 23-12-15 10:54:49, Sergey Senozhatsky wrote:
> > slowly looking through the patches.
> 
> Back from Christmas vacation...
> 
> > How about setting 'sync_print' to 'true' in...
> >   bust_spinlocks() /* only set to true */
> > or
> >   console_verbose() /* um... may be... */
> > or
> >   having a separate one-liner for that
> > 
> > void console_panic_mode(void)
> > {
> > 	sync_print = true;
> > }
> > 
> > and call it early in panic(), before we send out IPI_STOP.
> 
> I like using console_verbose() for setting sync_print to true. That will
> likely be more reliable than using oops in progress. After all
> console_verbose() is used like console_panic_mode() anyway and in quite a
> few places so it is a reasonable match.

Agree, only arch/microblaze/kernel/setup.c and arch/nios2/kernel/setup.c
do console_verbose() early in setup_arch(), the rest seems to be what I
was thinking of.

	-ss
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/