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Florian Westphal 01726b9021 netfilter: nf_tables: reset table validation state on abort 
[ Upstream commit 6f93616a73 ]

If a transaction fails the final validation in the commit hook, the table
validation state is changed to NFT_VALIDATE_DO and a replay of the batch is
performed.  Every rule insert will then do a graph validation.

This is much slower, but provides better error reporting to the user
because we can point at the rule that introduces the validation issue.

Without this reset the affected table(s) remain in full validation mode,
i.e. on next transaction we start with slow-mode.

This makes the next transaction after a failed incremental update very slow:

 # time iptables-restore < /tmp/ruleset
 real    0m0.496s [..]
 # time iptables -A CALLEE -j CALLER
 iptables v1.8.11 (nf_tables):  RULE_APPEND failed (Too many links): rule in chain CALLEE
 real    0m0.022s [..]
 # time iptables-restore < /tmp/ruleset
 real    1m22.355s [..]

After this patch, 2nd iptables-restore is back to ~0.5s.

Fixes: 9a32e98506 ("netfilter: nf_tables: don't write table validation state without mutex")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-03-04 07:20:01 -05:00
arch arm64: dts: qcom: sm6115: Add CX_MEM/DBGC GPU regions 2026-03-04 07:19:47 -05:00
block block: add a bio_add_virt_nofail helper 2026-03-04 07:19:26 -05:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec 2026-01-30 10:28:39 +01:00
Documentation Documentation: tracing: Add PCI tracepoint documentation 2026-03-04 07:19:59 -05:00
drivers mctp i2c: initialise event handler read bytes 2026-03-04 07:20:01 -05:00
fs quota: fix livelock between quotactl and freeze_super 2026-03-04 07:20:00 -05:00
include hwrng: core - use RCU and work_struct to fix race condition 2026-03-04 07:19:40 -05:00
init init: handle bootloader identifier in kernel parameters 2025-10-19 16:33:50 +02:00
io_uring io_uring/sync: validate passed in offset 2026-03-04 07:19:28 -05:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel workqueue: Process rescuer work items one-by-one using a cursor 2026-03-04 07:19:49 -05:00
lib procfs: avoid fetching build ID while holding VMA lock 2026-02-11 13:40:18 +01:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather 2026-02-19 16:29:55 +01:00
net netfilter: nf_tables: reset table validation state on abort 2026-03-04 07:20:01 -05:00
rust rust: rbtree: fix documentation typo in CursorMut peek_next method 2026-02-06 16:55:44 +01:00
samples samples/ftrace: Adjust LoongArch register restore order in direct calls 2026-01-08 10:14:50 +01:00
scripts scripts: generate_rust_analyzer: Add compiler_builtins -> core dep 2026-02-06 16:55:47 +01:00
security evm: Use ordered xattrs list to calculate HMAC in evm_init_hmac() 2026-03-04 07:19:56 -05:00
sound ASoC: nau8821: Fixup nau8821_enable_jack_detect() 2026-03-04 07:19:52 -05:00
tools spi: tools: Add include folder to .gitignore 2026-03-04 07:19:57 -05:00
usr kbuild: uapi: Strip comments before size type check 2025-11-13 15:34:35 -05:00
virt KVM: Don't clobber irqfd routing type when deassigning irqfd 2026-02-11 13:40:17 +01:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-08-01 09:48:44 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: introduce .clippy.toml 2025-03-13 13:01:42 +01:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS gpiolib-acpi: Update file references in the Documentation and MAINTAINERS 2026-02-11 13:40:29 +01:00
Makefile Linux 6.12.74 2026-02-19 16:29:56 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

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 reStructuredText 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.