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Christophe Leroy c78c33a262 lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE 
commit aeb8724653 upstream.

All mapping iterator logic is based on the assumption that sg->offset
is always lower than PAGE_SIZE.

But there are situations where sg->offset is such that the SG item
is on the second page. In that case sg_copy_to_buffer() fails
properly copying the data into the buffer. One of the reason is
that the data will be outside the kmapped area used to access that
data.

This patch fixes the issue by adjusting the mapping iterator
offset and pgoffset fields such that offset is always lower than
PAGE_SIZE.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Fixes: 4225fc8555 ("lib/scatterlist: use page iterator in the mapping iterator")
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-31 07:28:37 +02:00
arch arm64: tegra: Update Jetson TX1 GPU regulator timings 2019-07-31 07:28:36 +02:00
block block, bfq: NULL out the bic when it's no longer valid 2019-07-21 09:04:30 +02:00
certs Replace magic for trusting the secondary keyring with #define 2018-09-09 19:55:54 +02:00
crypto crypto: chacha20poly1305 - fix atomic sleep when using async algorithm 2019-07-31 07:28:35 +02:00
Documentation x86/atomic: Fix smp_mb__{before,after}_atomic() 2019-07-31 07:28:26 +02:00
drivers iwlwifi: pcie: fix ALIVE interrupt handling for gen2 devices w/o MSI-X 2019-07-31 07:28:37 +02:00
firmware License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fs pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error 2019-07-31 07:28:37 +02:00
include clocksource/drivers/exynos_mct: Increase priority over ARM arch timer 2019-07-31 07:28:30 +02:00
init init: initialize jump labels before command line option parsing 2019-05-16 19:42:23 +02:00
ipc ipc: prevent lockup on alloc_msg and free_msg 2019-06-15 11:54:51 +02:00
kernel timer_list: Guard procfs specific code 2019-07-31 07:28:28 +02:00
lib lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE 2019-07-31 07:28:37 +02:00
mm mm/vmscan.c: prevent useless kswapd loops 2019-07-10 09:54:41 +02:00
net Bluetooth: validate BLE connection interval updates 2019-07-31 07:28:33 +02:00
samples samples, bpf: fix to change the buffer size for read() 2019-07-21 09:04:17 +02:00
scripts scripts/decode_stacktrace.sh: prefix addr2line with $CROSS_COMPILE 2019-07-10 09:54:36 +02:00
security apparmor: enforce nullbyte at end of tag string 2019-06-25 11:36:51 +08:00
sound ALSA: hda/realtek - Headphone Mic can't record after S3 2019-07-21 09:04:30 +02:00
tools perf stat: Make metric event lookup more robust 2019-07-31 07:28:32 +02:00
usr initramfs: fix initramfs rebuilds w/ compression after disabling 2017-11-03 07:39:19 -07:00
virt KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy 2019-07-21 09:04:24 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore kbuild: rpm-pkg: keep spec file until make mrproper 2018-02-13 10:19:46 +01:00
.mailmap .mailmap: Add Maciej W. Rozycki's Imagination e-mail address 2017-11-10 12:16:15 -08:00
COPYING
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS MAINTAINERS: Add Sasha as a stable branch maintainer 2018-12-01 09:42:50 +01:00
Makefile Linux 4.14.134 2019-07-21 09:04:43 +02:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.