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]
Date:   Mon, 15 Apr 2019 11:32:16 +0900
From:   Sergey Senozhatsky <>
To:     Paul Gortmaker <>
Cc:, Andi Kleen <>,
        Petr Mladek <>,
        Sergey Senozhatsky <>,
        Steven Rostedt <>,
        Andrew Morton <>
Subject: Re: [PATCH] printk: tie printk_once / printk_deferred_once into
 .data.once for reset

On (04/12/19 22:11), Paul Gortmaker wrote:
> In commit b1fca27d384e ("kernel debug: support resetting WARN*_ONCE")
> we got the opportunity to reset state on the one shot messages,
> without having to reboot.

Didn't know that.

> However printk_once (printk_deferred_once) live in a different file
> and didn't get the same kind of update/conversion, so they remain
> unconditionally one shot, until the system is rebooted.
> For example, we currently have:
>   sched/rt.c: printk_deferred_once("sched: RT throttling activated\n");
> ..which could reasonably be tripped as someone is testing and tuning
> a new system/workload and their task placements.  For consistency, and
> to avoid reboots in the same vein as the original commit, we make these
> two instances of _once the same as the WARN*_ONCE instances are.

Looks OK to me.

Reviewed-by: Sergey Senozhatsky <>


Powered by blists - more mailing lists