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
| ||
|
Date: Fri, 29 Mar 2019 17:08:51 -0700 From: Jakub Kicinski <jakub.kicinski@...ronome.com> To: peterz@...radead.org, tglx@...utronix.de Cc: ard.biesheuvel@...aro.org, yamada.masahiro@...ionext.com, mingo@...nel.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, oss-drivers@...ronome.com, alexei.starovoitov@...il.com, Jakub Kicinski <jakub.kicinski@...ronome.com> Subject: [PATCH 0/3] locking/static_key: improve rate limited labels Hi! This will be used to fix the static branch disabling in the TLS code. The net/tls/ code should be using the deferred static branch type, because unprivileged users can flip the branch on and off quite easily with CONFIG_TLS_DEVICE=y. Second of all we shouldn't take the jump label locks from the RX path, when the socket is destroyed. This can be avoided with some slight code refactoring in deferred static_key as it already runs from a workqueue. This the series (and a simple tls patch which makes use of it) applied opening 0.5M TLS connections to localhost (just calling setsockopt, no data exchange) goes down from 37.9s to 12.4s. Jakub Kicinski (3): locking/static_key: add support for deferred static branches locking/static_key: factor out the fast path of static_key_slow_dec() locking/static_key: don't take sleeping locks in __static_key_slow_dec_deferred() include/linux/jump_label_ratelimit.h | 64 ++++++++++++++++++++++++++-- kernel/jump_label.c | 64 +++++++++++++++------------- 2 files changed, 95 insertions(+), 33 deletions(-) -- 2.21.0
Powered by blists - more mailing lists