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Paul E. McKenney f5657f3306 rcu: Make RCU_LOCKDEP_WARN() avoid early lockdep checks 
[ Upstream commit 0cae5ded53 ]

Currently, RCU_LOCKDEP_WARN() checks the condition before checking
to see if lockdep is still enabled.  This is necessary to avoid the
false-positive splats fixed by commit 3066820034 ("rcu: Reject
RCU_LOCKDEP_WARN() false positives").  However, the current state can
result in false-positive splats during early boot before lockdep is fully
initialized.  This commit therefore checks debug_lockdep_rcu_enabled()
both before and after checking the condition, thus avoiding both sets
of false-positive error reports.

Reported-by: Steven Rostedt <rostedt@goodmis.org>
Reported-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-11 16:39:48 +01:00
arch ARM: dts: exynos: Use Exynos5420 compatible for the MIPI video phy 2023-03-11 16:39:48 +01:00
block blk-iocost: fix divide by 0 error in calc_lcoefs() 2023-03-11 16:39:48 +01:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: rsa-pkcs1pad - Use akcipher_request_complete 2023-03-11 16:39:27 +01:00
Documentation ASoC: dt-bindings: meson: fix gx-card codec node regex 2023-03-11 16:39:36 +01:00
drivers wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds() 2023-03-11 16:39:48 +01:00
fs udf: Define EFSCORRUPTED error code 2023-03-11 16:39:48 +01:00
include rcu: Make RCU_LOCKDEP_WARN() avoid early lockdep checks 2023-03-11 16:39:48 +01:00
init init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash 2022-12-02 17:40:03 +01:00
io_uring io_uring: ensure that io_init_req() passes in the right issue_flags 2023-03-03 15:13:15 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel bpf: Fix global subprog context argument resolution logic 2023-03-11 16:39:28 +01:00
lib printf: fix errname.c list 2023-03-11 16:39:40 +01:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm Revert "mm: Always release pages to the buddy allocator in memblock_free_late()." 2023-02-22 12:55:56 +01:00
net NFS: fix disabling of swap 2023-03-11 16:39:38 +01:00
samples samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() 2023-01-14 10:16:01 +01:00
scripts builddeb: clean generated package content 2023-03-11 16:39:46 +01:00
security tomoyo: fix broken dependency on *.conf.default 2023-02-01 08:23:10 +01:00
sound ASoC: tlv320adcx140: fix 'ti,gpio-config' DT property init 2023-03-11 16:39:38 +01:00
tools objtool: add UACCESS exceptions for __tsan_volatile_read/write 2023-03-11 16:39:41 +01:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt kvm: Add support for arch compat vm ioctls 2022-10-30 09:41:15 +01:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
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 audit: update the mailing list in MAINTAINERS 2023-02-25 11:55:04 +01:00
Makefile Linux 5.10.172 2023-03-03 15:13:15 +01:00
README

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.