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Sean Christopherson bd9a25a022 KVM: x86: Bail to userspace if emulation of atomic user access faults 
commit 5d6c7de644 upstream.

Exit to userspace when emulating an atomic guest access if the CMPXCHG on
the userspace address faults.  Emulating the access as a write and thus
likely treating it as emulated MMIO is wrong, as KVM has already
confirmed there is a valid, writable memslot.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220202004945.2540433-6-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2024-04-10 16:19:37 +02:00
Documentation x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled 2024-04-10 16:19:34 +02:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
arch KVM: x86: Bail to userspace if emulation of atomic user access faults 2024-04-10 16:19:37 +02:00
block block: Clear zone limits for a non-zoned stacked queue 2024-04-10 16:18:35 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:22:01 +02:00
crypto exit: Rename module_put_and_exit to module_put_and_kthread_exit 2024-04-10 16:18:55 +02:00
drivers thermal: devfreq_cooling: Fix perf state when calculate dfc res_util 2024-04-10 16:19:37 +02:00
fs exec: Fix NOMMU linux_binprm::exec in transfer_args_to_stack() 2024-04-10 16:19:31 +02:00
include mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations 2024-04-10 16:19:37 +02:00
init init: open /initrd.image with O_LARGEFILE 2024-04-10 16:19:31 +02:00
io_uring io_uring: ensure '0' is returned on file registration success 2024-04-10 16:19:37 +02:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:28:45 +01:00
kernel locking/rwsem: Disable preemption while trying for rwsem lock 2024-04-10 16:19:37 +02:00
lib arch: Introduce CONFIG_FUNCTION_ALIGNMENT 2024-04-10 16:18:49 +02:00
mm mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations 2024-04-10 16:19:37 +02:00
net net/rds: fix possible cp null dereference 2024-04-10 16:19:37 +02:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:10:01 +02:00
scripts kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1 2024-04-10 16:18:41 +02:00
security landlock: Warn once if a Landlock action is requested while disabled 2024-04-10 16:18:39 +02:00
sound ALSA: sh: aica: reorder cleanup operations to avoid UAF bugs 2024-04-10 16:19:32 +02:00
tools selftests: mptcp: diag: return KSFT_FAIL not test_cnt 2024-04-10 16:19:30 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:27:15 +01:00
virt KVM: Always flush async #PF workqueue when vCPU is being destroyed 2024-04-10 16:18:34 +02:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig
…
.get_maintainer.ignore
…
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS trace: Relocate event helper files 2024-04-10 16:19:24 +02:00
Makefile arch: Introduce CONFIG_FUNCTION_ALIGNMENT 2024-04-10 16:18:49 +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.