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Sean Christopherson b9f28182e2 KVM: x86: Take irqfds.lock when adding/deleting IRQ bypass producer 
[ Upstream commit f1fb088d9c ]

Take irqfds.lock when adding/deleting an IRQ bypass producer to ensure
irqfd->producer isn't modified while kvm_irq_routing_update() is running.
The only lock held when a producer is added/removed is irqbypass's mutex.

Fixes: 8727688006 ("KVM: x86: select IRQ_BYPASS_MANAGER")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20250404193923.1413163-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[ Adjust context ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-09-09 18:50:22 +02:00
arch KVM: x86: Take irqfds.lock when adding/deleting IRQ bypass producer 2025-09-09 18:50:22 +02:00
block block: avoid possible overflow for chunk_sectors check in blk_stack_limits() 2025-08-28 16:24:25 +02:00
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Documentation asm-generic: Add memory barrier dma_mb() 2025-08-28 16:24:36 +02:00
drivers e1000e: fix heap overflow in e1000_set_eeprom 2025-09-09 18:50:21 +02:00
fs fs: writeback: fix use-after-free in __mark_inode_dirty() 2025-09-09 18:50:17 +02:00
include mm: move page table sync declarations to linux/pgtable.h 2025-09-09 18:50:21 +02:00
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kernel cpufreq/sched: Explicitly synchronize limits_changed flag handling 2025-09-09 18:50:22 +02:00
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mm mm/khugepaged: fix ->anon_vma race 2025-09-09 18:50:22 +02:00
net batman-adv: fix OOB read/write in network-coding decode 2025-09-09 18:50:21 +02:00
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scripts kconfig: lxdialog: fix 'space' to (de)select options 2025-08-28 16:24:25 +02:00
security securityfs: don't pin dentries twice, once is enough... 2025-08-28 16:24:17 +02:00
sound ALSA: usb-audio: Add mute TLV for playback volumes on some devices 2025-09-09 18:50:20 +02:00
tools selftests: mptcp: pm: check flush doesn't reset limits 2025-08-28 16:24:37 +02:00
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Makefile Linux 5.15.191 2025-09-04 14:28:48 +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.