linux-stable

Go to file

Brian Foster e447d28a93 tracing: Zero the pipe cpumask on alloc to avoid spurious -EBUSY commit `3d07fa1dd1` upstream. The pipe cpumask used to serialize opens between the main and percpu trace pipes is not zeroed or initialized. This can result in spurious -EBUSY returns if underlying memory is not fully zeroed. This has been observed by immediate failure to read the main trace_pipe file on an otherwise newly booted and idle system: # cat /sys/kernel/debug/tracing/trace_pipe cat: /sys/kernel/debug/tracing/trace_pipe: Device or resource busy Zero the allocation of pipe_cpumask to avoid the problem. Link: https://lore.kernel.org/linux-trace-kernel/20230831125500.986862-1-bfoster@redhat.com Cc: stable@vger.kernel.org Fixes: `c2489bb7e6` ("tracing: Introduce pipe_cpumask to avoid race on trace_pipes") Reviewed-by: Zheng Yejian <zhengyejian1@huawei.com> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-09-13 09:48:45 +02:00
Documentation	regulator: dt-bindings: qcom,rpm: fix pattern for children	2023-09-13 09:48:42 +02:00
LICENSES	…
arch	LoongArch: Ensure FP/SIMD registers in the core dump file is up to date	2023-09-13 09:48:44 +02:00
block	block: don't add or resize partition on the disk with GENHD_FL_NO_PART	2023-09-13 09:48:41 +02:00
certs	…
crypto	crypto: af_alg - Decrement struct key.usage in alg_set_by_key_serial()	2023-09-13 09:48:42 +02:00
drivers	serial: sc16is7xx: fix regression with GPIO configuration	2023-09-13 09:48:44 +02:00
fs	pstore/ram: Check start of empty przs during init	2023-09-13 09:48:42 +02:00
include	memfd: do not -EACCES old memfd_create() users with vm.memfd_noexec=2	2023-09-13 09:48:44 +02:00
init	sched/psi: Select KERNFS as needed	2023-09-13 09:47:58 +02:00
io_uring	io_uring: Don't set affinity on a dying sqpoll thread	2023-09-13 09:48:40 +02:00
ipc	…
kernel	tracing: Zero the pipe cpumask on alloc to avoid spurious -EBUSY	2023-09-13 09:48:45 +02:00
lib	iov_iter: Fix iov_iter_extract_pages() with zero-sized entries	2023-09-13 09:48:42 +02:00
mm	revert "memfd: improve userspace warnings for missing exec-related flags".	2023-09-13 09:48:45 +02:00
net	Bluetooth: HCI: Introduce HCI_QUIRK_BROKEN_LE_CODED	2023-09-13 09:48:44 +02:00
rust	rust: macros: vtable: fix `HAS_*` redefinition (`gen_const_name`)	2023-08-23 17:32:36 +02:00
samples	samples/bpf: fix broken map lookup probe	2023-09-13 09:48:06 +02:00
scripts	scripts/gdb: fix 'lx-lsmod' show the wrong size	2023-09-13 09:48:05 +02:00
security	smackfs: Prevent underflow in smk_set_cipso()	2023-09-13 09:48:16 +02:00
sound	ALSA: hda/cirrus: Fix broken audio on hardware with two CS42L42 codecs.	2023-09-13 09:48:40 +02:00
tools	memfd: do not -EACCES old memfd_create() users with vm.memfd_noexec=2	2023-09-13 09:48:44 +02:00
usr	…
virt	kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add()	2023-09-13 09:48:21 +02:00
.clang-format	…
.cocciconfig	…
.get_maintainer.ignore	…
.gitattributes	…
.gitignore	…
.mailmap	…
.rustfmt.toml	…
COPYING	…
CREDITS	…
Kbuild	…
Kconfig	…
MAINTAINERS	…
Makefile	kbuild: rust_is_available: remove -v option	2023-09-13 09:48:03 +02:00
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.