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Chuck Lever fa6be9cc6e NFSD: Protect against send buffer overflow in NFSv3 READ
Since before the git era, NFSD has conserved the number of pages
held by each nfsd thread by combining the RPC receive and send
buffers into a single array of pages. This works because there are
no cases where an operation needs a large RPC Call message and a
large RPC Reply at the same time.

Once an RPC Call has been received, svc_process() updates
svc_rqst::rq_res to describe the part of rq_pages that can be
used for constructing the Reply. This means that the send buffer
(rq_res) shrinks when the received RPC record containing the RPC
Call is large.

A client can force this shrinkage on TCP by sending a correctly-
formed RPC Call header contained in an RPC record that is
excessively large. The full maximum payload size cannot be
constructed in that case.

Cc: <stable@vger.kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2022-09-26 14:02:30 -04:00
arch parisc: Allow CONFIG_64BIT with ARCH=parisc 2022-09-15 07:59:37 +02:00
block block-6.0-2022-09-16 2022-09-16 06:58:04 -07:00
certs Kbuild updates for v5.20 2022-08-10 10:40:41 -07:00
crypto crypto: blake2b: effectively disable frame size warning 2022-08-10 17:59:11 -07:00
Documentation Devicetree fixes for v6.0, take 2: 2022-09-14 10:22:39 +01:00
drivers parisc architecture fixes for kernel v6.0-rc6: 2022-09-18 13:26:59 -07:00
fs NFSD: Protect against send buffer overflow in NFSv3 READ 2022-09-26 14:02:30 -04:00
include SUNRPC: Fix svcxdr_init_encode's buflen calculation 2022-09-26 14:02:26 -04:00
init arm64 fixes for -rc3 2022-08-26 11:32:53 -07:00
io_uring io_uring-6.0-2022-09-18 2022-09-18 09:25:27 -07:00
ipc Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
kernel dma-mapping fixes for Linux 6.0 2022-09-10 12:18:19 -04:00
lib This push fixes a boot performance regression due to an unnecessary 2022-08-31 09:47:06 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm: pagewalk: Fix race between unmap and page walker 2022-09-03 10:13:13 -07:00
net NFS client bugfixes for Linux 6.0 2022-09-12 17:53:46 -04:00
samples Tracing updates for 5.20 / 6.0 2022-08-05 09:41:12 -07:00
scripts Kbuild fixes for v6.0 (2nd) 2022-09-11 15:16:47 -04:00
security Landlock fix for v6.0-rc4 2022-09-02 15:24:08 -07:00
sound ASoC: Fixes for v6.0 2022-09-08 14:24:05 +02:00
tools parisc architecture fixes for kernel v6.0-rc6: 2022-09-18 13:26:59 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device() 2022-08-19 04:05:43 -04:00
.clang-format PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap Devicetree fixes for v6.0, take 2: 2022-09-14 10:22:39 +01:00
COPYING
CREDITS drm for 5.20/6.0 2022-08-03 19:52:08 -07:00
Kbuild
Kconfig
MAINTAINERS gpio fixes for v6.0-rc6 2022-09-16 12:58:17 -07:00
Makefile Linux 6.0-rc6 2022-09-18 13:44:14 -07:00
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.