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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 2 Sep 2020 09:32:48 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: Yunsheng Lin <linyunsheng@...wei.com>, Cong Wang <xiyou.wangcong@...il.com> Cc: Jamal Hadi Salim <jhs@...atatu.com>, Jiri Pirko <jiri@...nulli.us>, David Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Linux Kernel Network Developers <netdev@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, linuxarm@...wei.com Subject: Re: [PATCH net-next] net: sch_generic: aviod concurrent reset and enqueue op for lockless qdisc On 9/1/20 11:34 PM, Yunsheng Lin wrote: > > I am not familiar with TCQ_F_CAN_BYPASS. > From my understanding, the problem is that there is no order between > qdisc enqueuing and qdisc reset. Thw qdisc_reset() should be done after rcu grace period, when there is guarantee no enqueue is in progress. qdisc_destroy() already has a qdisc_reset() call, I am not sure why qdisc_deactivate() is also calling qdisc_reset()
Powered by blists - more mailing lists