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David Woodhouse 4ea9439fd5 KVM: x86/xen: Validate port number in SCHEDOP_poll 
We shouldn't allow guests to poll on arbitrary port numbers off the end
of the event channel table.

Fixes: 1a65105a5a ("KVM: x86/xen: handle PV spinlocks slowpath")
[dwmw2: my bug though; the original version did check the validity as a
 side-effect of an idr_find() which I ripped out in refactoring.]
Reported-by: Michal Luczaj <mhal@rbox.co>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Cc: stable@kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-11-23 18:58:44 -05:00
arch KVM: x86/xen: Validate port number in SCHEDOP_poll 2022-11-23 18:58:44 -05:00
block
certs
crypto
Documentation KVM: s390: pv: don't allow userspace to set the clock under PV 2022-11-07 10:14:15 +01:00
drivers cxl fixes for 6.1-rc4 2022-11-06 13:09:52 -08:00
fs
include
init
io_uring
ipc
kernel - Add Cooper Lake's stepping to the PEBS guest/host events isolation 2022-11-06 12:41:32 -08:00
lib
LICENSES
mm
net
rust
samples
scripts
security
sound
tools A PCI allocation fix and a PV clock fix. 2022-11-09 12:28:15 -05:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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.rustfmt.toml
COPYING
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Makefile Linux 6.1-rc4 2022-11-06 15:07:11 -08:00
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.