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Lai Jiangshan 68b2e5d84a workqueue: Protects wq_unbound_cpumask with wq_pool_attach_mutex 
[ Upstream commit 99c621ef24 ]

When unbind_workers() reads wq_unbound_cpumask to set the affinity of
freshly-unbound kworkers, it only holds wq_pool_attach_mutex. This isn't
sufficient as wq_unbound_cpumask is only protected by wq_pool_mutex.

Make wq_unbound_cpumask protected with wq_pool_attach_mutex and also
remove the need of temporary saved_cpumask.

Fixes: 10a5a651e3 ("workqueue: Restrict kworker in the offline CPU pool running on housekeeping CPUs")
Reported-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2023-03-10 09:28:06 +01:00
Documentation x86: 2023-02-18 11:07:32 -08:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
arch arm64/sysreg: Fix errors in 32 bit enumeration values 2023-03-10 09:28:06 +01:00
block block: use proper return value from bio_failfast() 2023-03-10 09:27:58 +01:00
certs certs: Fix build error when PKCS#11 URI contains semicolon 2023-01-31 17:53:01 +09:00
crypto KEYS: asymmetric: Fix ECDSA use via keyctl uapi 2023-03-10 09:27:57 +01:00
drivers ACPICA: nsrepair: handle cases without a return value correctly 2023-03-10 09:28:05 +01:00
fs erofs: relinquish volume with mutex held 2023-03-10 09:27:57 +01:00
include rcu-tasks: Fix synchronize_rcu_tasks() VS zap_pid_ns_processes() 2023-03-10 09:28:04 +01:00
init Kbuild fixes for v6.2 (3rd) 2023-01-21 10:56:37 -08:00
io_uring io_uring,audit: don't log IORING_OP_MADVISE 2023-03-10 09:27:56 +01:00
ipc Non-MM patches for 6.2-rc1. 2022-12-12 17:28:58 -08:00
kernel workqueue: Protects wq_unbound_cpumask with wq_pool_attach_mutex 2023-03-10 09:28:06 +01:00
lib lib/mpi: Fix buffer overrun when SG is too long 2023-03-10 09:28:05 +01:00
mm Six hotfixes. Five are cc:stable: four for MM, one for nilfs2. Also a 2023-02-17 17:51:40 -08:00
net bpf: bpf_fib_lookup should not return neigh in NUD_FAILED state 2023-03-03 11:56:16 +01:00
rust rust: print: avoid evaluating arguments in `pr_*` macros in `unsafe` blocks 2023-01-16 00:54:35 +01:00
samples ftrace: Export ftrace_free_filter() to modules 2023-01-24 11:20:58 -05:00
scripts bpf_doc: Fix build error with older python versions 2023-03-10 09:28:05 +01:00
security randstruct: disable Clang 15 support 2023-02-25 11:13:30 +01:00
sound ALSA: hda: cs35l41: Correct error condition handling 2023-03-03 11:56:16 +01:00
tools kselftest/arm64: Fix syscall-abi for systems without 128 bit SME 2023-03-10 09:28:06 +01:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt VFIO fixes for v6.2-rc6 2023-01-23 11:56:07 -08:00
.clang-format iommufd for 6.2 2022-12-14 09:15:43 -08:00
.cocciconfig
…
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore *.rpm 2022-12-30 17:22:14 +09:00
.mailmap 12 hotfixes, mostly against mm/. Five of these fixes are cc:stable. 2023-02-13 14:09:20 -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: update SCTP maintainers 2023-02-02 11:35:33 -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 audit: update the mailing list in MAINTAINERS 2023-02-25 11:13:29 +01:00
Makefile Linux 6.2.2 2023-03-03 11:56:18 +01:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -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 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.