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Florian Westphal 6637f2fa4b netfilter: nf_tables: fix false-positive lockdep splat 
[ Upstream commit b9f052dc68 ]

->abort invocation may cause splat on debug kernels:

WARNING: suspicious RCU usage
net/netfilter/nft_set_pipapo.c:1697 suspicious rcu_dereference_check() usage!
[..]
rcu_scheduler_active = 2, debug_locks = 1
1 lock held by nft/133554: [..] (nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid
[..]
 lockdep_rcu_suspicious+0x1ad/0x260
 nft_pipapo_abort+0x145/0x180
 __nf_tables_abort+0x5359/0x63d0
 nf_tables_abort+0x24/0x40
 nfnetlink_rcv+0x1a0a/0x22c0
 netlink_unicast+0x73c/0x900
 netlink_sendmsg+0x7f0/0xc20
 ____sys_sendmsg+0x48d/0x760

Transaction mutex is held, so parallel updates are not possible.
Switch to _protected and check mutex is held for lockdep enabled builds.

Fixes: 212ed75dc5 ("netfilter: nf_tables: integrate pipapo into commit protocol")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-08-28 23:27:02 +08:00
arch powerpc/rtas_flash: allow user copy to flash block cache objects 2023-08-28 23:27:00 +08:00
block block/partition: fix signedness issue for Amiga partitions 2023-08-20 15:24:51 +08:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2023-04-19 17:50:34 +08:00
crypto KEYS: asymmetric: Copy sig and digest in public_key_verify_signature() 2023-08-20 15:21:12 +08:00
Documentation iommu/arm-smmu-v3: Document nesting-related errata 2023-08-20 16:01:31 +08:00
drivers drm/panel: simple: Fix AUO G121EAN01 panel timings according to the docs 2023-08-28 23:27:02 +08:00
fs btrfs: fix BUG_ON condition in btrfs_cancel_balance 2023-08-28 23:27:01 +08:00
include media: v4l2-mem2mem: add lock to protect parameter num_rdy 2023-08-28 23:26:55 +08:00
init x86/mm: Initialize text poking earlier 2023-08-20 16:01:29 +08:00
io_uring io_uring: correct check for O_TMPFILE 2023-08-20 16:01:40 +08:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2023-04-19 17:56:54 +08:00
kernel ring-buffer: Do not swap cpu_buffer during resize process 2023-08-28 23:26:57 +08:00
lib test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation 2023-08-20 15:24:43 +08:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm mm/damon/ops-common: atomically test and clear young on ptes and pmds 2023-08-20 15:24:58 +08:00
net netfilter: nf_tables: fix false-positive lockdep splat 2023-08-28 23:27:02 +08:00
samples samples: ftrace: Save required argument registers in sample trampolines 2023-08-20 16:01:05 +08:00
scripts kbuild: Disable GCOV for *.mod.o 2023-08-20 15:24:38 +08:00
security security: keys: Modify mismatched function name 2023-08-20 16:01:12 +08:00
sound ALSA: hda: fix a possible null-pointer dereference due to data race in snd_hdac_regmap_sync() 2023-08-28 23:26:57 +08:00
tools selftests: mirror_gre_changes: Tighten up the TTL test match 2023-08-28 23:27:02 +08:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2023-04-19 17:44:58 +08:00
virt KVM: Grab a reference to KVM for VM and vCPU stats file descriptors 2023-08-20 16:01:23 +08:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS iio: stx104: Move to addac subdirectory 2023-08-28 23:26:58 +08:00
Makefile Linux 5.15.127 2023-08-20 16:01:45 +08:00
README
stfsync.txt add file to track last rebase commit from stf 2023-08-21 00:12:49 +08:00

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 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.