linux-kernel - [PATCH bpf-next 0/4] bpf: add and use migrate_enable

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-next>] [day] [month] [year] [list]

Message-ID: <20251014112640.261770-1-dongml2@chinatelecom.cn>
Date: Tue, 14 Oct 2025 19:26:36 +0800
From: Menglong Dong <menglong8.dong@...il.com>
To: ast@...nel.org,
	paulmck@...nel.org
Cc: daniel@...earbox.net,
	andrii@...nel.org,
	martin.lau@...ux.dev,
	eddyz87@...il.com,
	song@...nel.org,
	yonghong.song@...ux.dev,
	john.fastabend@...il.com,
	kpsingh@...nel.org,
	sdf@...ichev.me,
	haoluo@...gle.com,
	jolsa@...nel.org,
	jakub@...udflare.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	horms@...nel.org,
	jiang.biao@...ux.dev,
	bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH bpf-next 0/4] bpf: add and use migrate_enable_rcu

For now, we can use rcu_read_lock_dont_migrate() for the case that call
both rcu_read_lock() and migrate_disable(). However, sometimes they can be
called separately.

Therefore, we factor out migrate_enable_rcu and migrate_disable_rcu from
rcu_read_lock_dont_migrate and rcu_read_unlock_migrate.

And we introduce the function bpf_prog_run_pin_on_cpu_rcu(), which is
similar to bpf_prog_run_pin_on_cpu() but use
migrate_disable_rcu/migrate_enable_rcu instead.

The function bpf_prog_run_pin_on_cpu_rcu() is used in following functions:

  sk_psock_msg_verdict
  sk_psock_tls_strp_read
  sk_psock_strp_read
  sk_psock_strp_parse
  sk_psock_verdict_recv
  bpf_prog_run_clear_cb

Menglong Dong (4):
  rcu: factor out migrate_enable_rcu and migrate_disable_rcu
  bpf: introduce bpf_prog_run_pin_on_cpu_rcu()
  bpf: use bpf_prog_run_pin_on_cpu_rcu() in skmsg.c
  bpf: use bpf_prog_run_pin_on_cpu_rcu() in bpf_prog_run_clear_cb

 include/linux/filter.h   | 16 +++++++++++++++-
 include/linux/rcupdate.h | 18 +++++++++++++++---
 net/core/skmsg.c         | 10 +++++-----
 3 files changed, 35 insertions(+), 9 deletions(-)

-- 
2.51.0