linux-kernel - [PATCH v2 0/2] netfilter: nf_tables: Fix percpu address space issues in nf_tables

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Message-ID: <20240829154739.16691-1-ubizjak@gmail.com>
Date: Thu, 29 Aug 2024 17:29:30 +0200
From: Uros Bizjak <ubizjak@...il.com>
To: netfilter-devel@...r.kernel.org,
	coreteam@...filter.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Uros Bizjak <ubizjak@...il.com>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Jozsef Kadlecsik <kadlec@...filter.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH v2 0/2] netfilter: nf_tables: Fix percpu address space issues in nf_tables_api.c

Use {ERR_PTR,IS_ERR,PTR_ERR}_PCPU() macros when crossing between generic
and percpu address spaces and add __percpu annotation to *stats pointer
to fix percpu address space issues.

NOTE: The patch depends on a patch that introduces *_PCPU() macros [1]
that is on the way to mainline through the mm tree. For convience, the
patch is included in this patch series, so CI tester is able to test
the second patch without compile failures.

[1] https://lore.kernel.org/lkml/20240818210235.33481-1-ubizjak@gmail.com/

The netfilter patch obsoletes patch [2].

[2] https://patchwork.ozlabs.org/project/netfilter-devel/patch/20240806102808.804619-1-ubizjak@gmail.com/

Cc: Pablo Neira Ayuso <pablo@...filter.org>
Cc: Jozsef Kadlecsik <kadlec@...filter.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>

Uros Bizjak (2):
  err.h: Add ERR_PTR_PCPU(), PTR_ERR_PCPU() and IS_ERR_PCPU() macros
  netfilter: nf_tables: Fix percpu address space issues in
    nf_tables_api.c

 include/linux/err.h           |  9 +++++++++
 net/netfilter/nf_tables_api.c | 16 ++++++++--------
 2 files changed, 17 insertions(+), 8 deletions(-)

-- 
2.42.0