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Florian Westphal says:
====================
netfilter: conntrack and nf_tables bug fixes
The following patchset contains netfilter fixes for net.
Broken since 5.19:
A few ancient connection tracking helpers assume TCP packets cannot
exceed 64kb in size, but this isn't the case anymore with 5.19 when
BIG TCP got merged, from myself.
Regressions since 5.19:
1. 'conntrack -E expect' won't display anything because nfnetlink failed
to enable events for expectations, only for normal conntrack events.
2. partially revert change that added resched calls to a function that can
be in atomic context. Both broken and fixed up by myself.
Broken for several releases (up to original merge of nf_tables):
Several fixes for nf_tables control plane, from Pablo.
This fixes up resource leaks in error paths and adds more sanity
checks for mutually exclusive attributes/flags.
Kconfig:
NF_CONNTRACK_PROCFS is very old and doesn't provide all info provided
via ctnetlink, so it should not default to y. From Geert Uytterhoeven.
Selftests:
rework nft_flowtable.sh: it frequently indicated failure; the way it
tried to detect an offload failure did not work reliably.
* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
testing: selftests: nft_flowtable.sh: rework test to detect offload failure
testing: selftests: nft_flowtable.sh: use random netns names
netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y
netfilter: nf_tables: check NFT_SET_CONCAT flag if field_count is specified
netfilter: nf_tables: disallow NFT_SET_ELEM_CATCHALL and NFT_SET_ELEM_INTERVAL_END
netfilter: nf_tables: NFTA_SET_ELEM_KEY_END requires concat and interval flags
netfilter: nf_tables: validate NFTA_SET_ELEM_OBJREF based on NFT_SET_OBJECT flag
netfilter: nf_tables: really skip inactive sets when allocating name
netfilter: nfnetlink: re-enable conntrack expectation events
netfilter: nf_tables: fix scheduling-while-atomic splat
netfilter: nf_ct_irc: cap packet search space to 4k
netfilter: nf_ct_ftp: prefer skb_linearize
netfilter: nf_ct_h323: cap packet size at 64k
netfilter: nf_ct_sane: remove pseudo skb linearization
netfilter: nf_tables: possible module reference underflow in error path
netfilter: nf_tables: disallow NFTA_SET_ELEM_KEY_END with NFT_SET_ELEM_INTERVAL_END flag
netfilter: nf_tables: use READ_ONCE and WRITE_ONCE for shared generation id access
====================
Link: https://lore.kernel.org/r/20220817140015.25843-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.