linux-kernel - Re: [patch v2] net: hip04: Make tx coalesce timer actually work

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]

Date:	Wed, 15 Apr 2015 12:20:01 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	David Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	peterz@...radead.org, mingo@...nel.org, dingtianhong@...wei.com,
	zhangfei.gao@...aro.org, dan.carpenter@...cle.com,
	netdev@...r.kernel.org
Subject: Re: [patch v2] net: hip04: Make tx coalesce timer actually work

On Tuesday 14 April 2015 21:42:42 Thomas Gleixner wrote:
> The code sets the expiry value of the timer to a relative value and
> starts it with hrtimer_start_expires. That's fine, but that only works
> once. The timer is started in relative mode, so the expiry value gets
> overwritten with the absolut expiry time (now + expiry).
> 
> So once the timer expired, a new call to hrtimer_start_expires results
> in an immidiately expired timer, because the expiry value is
> already in the past.
> 
> Use the proper mechanisms to (re)start the timer in the intended way.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: dingtianhong <dingtianhong@...wei.com>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Zhangfei Gao <zhangfei.gao@...aro.org>
> Cc: Dan Carpenter <dan.carpenter@...cle.com>
> Cc: netdev@...r.kernel.org
> 

Acked-by: Arnd Bergmann <arnd@...db.de>
--
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/