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Johan Hovold e0538aa7e0 irqdomain: Fix disassociation race 
commit 3f883c38f5 upstream.

The global irq_domain_mutex is held when mapping interrupts from
non-hierarchical domains but currently not when disposing them.

This specifically means that updates of the domain mapcount is racy
(currently only used for statistics in debugfs).

Make sure to hold the global irq_domain_mutex also when disposing
mappings from non-hierarchical domains.

Fixes: 9dc6be3d41 ("genirq/irqdomain: Add map counter")
Cc: stable@vger.kernel.org      # 4.13
Tested-by: Hsin-Yi Wang <hsinyi@chromium.org>
Tested-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230213104302.17307-3-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-11 16:40:00 +01:00
arch x86/speculation: Allow enabling STIBP with legacy IBRS 2023-03-11 16:39:59 +01:00
block
certs
crypto
Documentation Documentation/hw-vuln: Document the interaction between IBRS and STIBP 2023-03-11 16:39:59 +01:00
drivers brd: return 0/-error from brd_insert_page() 2023-03-11 16:39:59 +01:00
fs udf: Fix file corruption when appending just after end of preallocated extent 2023-03-11 16:39:57 +01:00
include ima: Align ima_file_mmap() parameters with mmap_file LSM hook 2023-03-11 16:40:00 +01:00
init
io_uring
ipc
kernel irqdomain: Fix disassociation race 2023-03-11 16:40:00 +01:00
lib
LICENSES
mm
net
samples
scripts
security ima: Align ima_file_mmap() parameters with mmap_file LSM hook 2023-03-11 16:40:00 +01:00
sound
tools
usr
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:39:58 +01:00
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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.