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Tyler Hicks 0348dcd98a ipv4: Return EINVAL when ping_group_range sysctl doesn't map to user ns 
[ Upstream commit 70ba5b6db9 ]

The low and high values of the net.ipv4.ping_group_range sysctl were
being silently forced to the default disabled state when a write to the
sysctl contained GIDs that didn't map to the associated user namespace.
Confusingly, the sysctl's write operation would return success and then
a subsequent read of the sysctl would indicate that the low and high
values are the overflowgid.

This patch changes the behavior by clearly returning an error when the
sysctl write operation receives a GID range that doesn't map to the
associated user namespace. In such a situation, the previous value of
the sysctl is preserved and that range will be returned in a subsequent
read of the sysctl.

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-07-25 11:25:09 +02:00
Documentation arm64: Add 'ssbd' command-line option 2018-07-22 14:28:51 +02:00
arch ARC: mm: allow mprotect to make stack mappings executable 2018-07-25 11:25:08 +02:00
block block: do not use interruptible wait anywhere 2018-07-22 14:28:48 +02:00
certs License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crypto crypto: af_alg - Initialize sg_num_bytes in error code path 2018-07-22 14:28:48 +02:00
drivers drm/nouveau: Avoid looping through fake MST connectors 2018-07-25 11:25:08 +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 fat: fix memory allocation failure handling of match_strdup() 2018-07-25 11:25:07 +02:00
include string: drop __must_check from strscpy() and restore strscpy() usages in cgroup 2018-07-22 14:28:52 +02:00
init init: fix false positives in W+X checking 2018-06-21 04:02:57 +09:00
ipc ipc/shm: fix shmat() nil address after round-down when remapping 2018-05-30 07:51:49 +02:00
kernel stop_machine: Disable preemption when waking two stopper threads 2018-07-25 11:25:08 +02:00
lib lib/vsprintf: Remove atomic-unsafe support for %pCr 2018-07-03 11:24:48 +02:00
mm mm/huge_memory.c: fix data loss when splitting a file pmd 2018-07-25 11:25:08 +02:00
net ipv4: Return EINVAL when ping_group_range sysctl doesn't map to user ns 2018-07-25 11:25:09 +02:00
samples samples/bpf: Partially fixes the bpf.o build 2018-04-26 11:02:12 +02:00
scripts Kbuild: fix # escaping in .cmd files for future Make 2018-07-11 16:29:21 +02:00
security selinux: KASAN: slab-out-of-bounds in xattr_getsecurity 2018-06-05 11:41:56 +02:00
sound ALSA: hda: add mute led support for HP ProBook 455 G5 2018-07-25 11:25:07 +02:00
tools tools build: fix # escaping in .cmd files for future Make 2018-07-17 11:39:30 +02:00
usr initramfs: fix initramfs rebuilds w/ compression after disabling 2017-11-03 07:39:19 -07:00
virt KVM/Eventfd: Avoid crash when assign and deassign specific eventfd in parallel. 2018-07-25 11:25:07 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.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 dt-bindings: Document mti,mips-cpc binding 2018-03-15 10:54:35 +01:00
Makefile Linux 4.14.57 2018-07-22 14:28:52 +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.