linux-stable

Go to file

Prashanth K e20a23b342 usb: gadget: u_serial: Avoid spinlock recursion in __gs_console_push [ Upstream commit `e599046994` ] When serial console over USB is enabled, gs_console_connect queues gs_console_work, where it acquires the spinlock and queues the usb request, and this request goes to gadget layer. Now consider a situation where gadget layer prints something to dmesg, this will eventually call gs_console_write() which requires cons->lock. And this causes spinlock recursion. Avoid this by excluding usb_ep_queue from the spinlock. spin_lock_irqsave //needs cons->lock gs_console_write . . _printk __warn_printk dev_warn/pr_err . . [USB Gadget Layer] . . usb_ep_queue gs_console_work __gs_console_push // acquires cons->lock process_one_work Signed-off-by: Prashanth K <quic_prashk@quicinc.com> Link: https://lore.kernel.org/r/1683638872-6885-1-git-send-email-quic_prashk@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-08-23 17:32:30 +02:00
Documentation	iommu/amd: Introduce Disable IRTE Caching Support	2023-08-23 17:32:27 +02:00
LICENSES	…
arch	Revert "[PATCH] uml: export symbols added by GCC hardened"	2023-08-23 17:32:29 +02:00
block	blk-mq: Fix stall due to recursive flush plug	2023-08-03 10:25:41 +02:00
certs	…
crypto	crypto: jitter - correct health test during initialization	2023-07-19 16:36:19 +02:00
drivers	usb: gadget: u_serial: Avoid spinlock recursion in __gs_console_push	2023-08-23 17:32:30 +02:00
fs	cifs: fix session state check in reconnect to avoid use-after-free issue	2023-08-23 17:32:29 +02:00
include	media: v4l2-mem2mem: add lock to protect parameter num_rdy	2023-08-23 17:32:30 +02:00
init	init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init()	2023-08-08 20:04:49 +02:00
io_uring	io_uring: correct check for O_TMPFILE	2023-08-16 18:32:19 +02:00
ipc	…
kernel	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-08-23 17:32:27 +02:00
lib	debugobjects: Recheck debug_objects_enabled before reporting	2023-08-11 12:14:25 +02:00
mm	mm: memory-failure: avoid false hwpoison page mapped error info	2023-08-16 18:32:20 +02:00
net	nexthop: Fix infinite nexthop bucket dump when using maximum nexthop ID	2023-08-16 18:32:28 +02:00
rust	rust: allocator: Prevent mis-aligned allocation	2023-08-11 12:14:18 +02:00
samples	samples: ftrace: Save required argument registers in sample trampolines	2023-07-23 13:54:09 +02:00
scripts	kbuild: rust: avoid creating temporary files	2023-07-27 08:57:06 +02:00
security	security: keys: Modify mismatched function name	2023-07-27 08:56:59 +02:00
sound	ASoC: SOF: core: Free the firmware trace before calling snd_sof_shutdown()	2023-08-23 17:32:29 +02:00
tools	nexthop: Fix infinite nexthop bucket dump when using maximum nexthop ID	2023-08-16 18:32:28 +02:00
usr	…
virt	KVM: Grab a reference to KVM for VM and vCPU stats file descriptors	2023-08-03 10:26:01 +02:00
.clang-format	…
.cocciconfig	…
.get_maintainer.ignore	…
.gitattributes	…
.gitignore	…
.mailmap	mailmap: add entries for Ben Dooks	2023-06-19 13:19:35 -07:00
.rustfmt.toml	…
COPYING	…
CREDITS	…
Kbuild	…
Kconfig	…
MAINTAINERS	Networking fixes for 6.4-rc8, including fixes from ipsec, bpf,	2023-06-22 17:59:51 -07:00
Makefile	Linux 6.4.11	2023-08-16 18:32:31 +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.