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Nikita Yushchenko cb77c81d34 tracing/osnoise: Properly unhook events if start_per_cpu_kthreads() fails commit `0878355b51` upstream. If start_per_cpu_kthreads() called from osnoise_workload_start() returns error, event hooks are left in broken state: unhook_irq_events() called but unhook_thread_events() and unhook_softirq_events() not called, and trace_osnoise_callback_enabled flag not cleared. On the next tracer enable, hooks get not installed due to trace_osnoise_callback_enabled flag. And on the further tracer disable an attempt to remove non-installed hooks happened, hitting a WARN_ON_ONCE() in tracepoint_remove_func(). Fix the error path by adding the missing part of cleanup. While at this, introduce osnoise_unhook_events() to avoid code duplication between this error path and normal tracer disable. Link: https://lkml.kernel.org/r/20220109153459.3701773-1-nikita.yushchenko@virtuozzo.com Cc: stable@vger.kernel.org Fixes: `bce29ac9ce` ("trace: Add osnoise tracer") Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Nikita Yushchenko <nikita.yushchenko@virtuozzo.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-01-27 11:05:18 +01:00
arch	powerpc/64s/radix: Fix huge vmap false positive	2022-01-27 11:05:12 +01:00
block	block: check minor range in device_add_disk()	2022-01-27 11:04:48 +01:00
certs
crypto	crypto: jitter - consider 32 LSB for APT	2022-01-27 11:04:31 +01:00
Documentation	HID: i2c-hid-of: Expose the touchscreen-inverted properties	2022-01-27 11:04:41 +01:00
drivers	PCI: pci-bridge-emul: Set PCI_STATUS_CAP_LIST for PCIe device	2022-01-27 11:05:14 +01:00
fs	ext4: don't use the orphan list when migrating an inode	2022-01-27 11:05:18 +01:00
include	xfrm: fix dflt policy check when there is no policy configured	2022-01-27 11:05:14 +01:00
init	init: make unknown command line param message clearer	2021-11-18 19:17:11 +01:00
ipc	shm: extend forced shm destroy to support objects from several IPC nses	2021-11-25 09:48:42 +01:00
kernel	tracing/osnoise: Properly unhook events if start_per_cpu_kthreads() fails	2022-01-27 11:05:18 +01:00
lib	kunit: Don't crash if no parameters are generated	2022-01-27 11:04:40 +01:00
LICENSES
mm	shmem: fix a race between shmem_unused_huge_shrink and shmem_evict_inode	2022-01-27 11:03:01 +01:00
net	xfrm: fix policy lookup for ipv6 gre packets	2022-01-27 11:05:14 +01:00
samples	samples: bpf: Fix 'unknown warning group' build warning on Clang	2022-01-27 11:03:29 +01:00
scripts	recordmcount.pl: fix typo in s390 mcount regex	2022-01-05 12:42:33 +01:00
security	selinux: fix potential memleak in selinux_add_opt()	2022-01-27 11:03:43 +01:00
sound	ASoC: mediatek: mt8183: fix device_node leak	2022-01-27 11:05:04 +01:00
tools	selftests/powerpc: Add a test of sigreturning to the kernel	2022-01-27 11:05:03 +01:00
usr
virt	KVM: downgrade two BUG_ONs to WARN_ON_ONCE	2021-12-22 09:32:34 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS	drm fixes for 5.15 final	2021-10-28 12:17:01 -07:00
Makefile	Linux 5.15.16	2022-01-20 09:13:16 +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.