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Amir Goldstein 6890751cfe ovl: relax WARN_ON() on rename to self 
commit 6889ee5a53 upstream.

In ovl_rename(), if new upper is hardlinked to old upper underneath
overlayfs before upper dirs are locked, user will get an ESTALE error
and a WARN_ON will be printed.

Changes to underlying layers while overlayfs is mounted may result in
unexpected behavior, but it shouldn't crash the kernel and it shouldn't
trigger WARN_ON() either, so relax this WARN_ON().

Reported-by: syzbot+bb1836a212e69f8e201a@syzkaller.appspotmail.com
Fixes: 804032fabb ("ovl: don't check rename to self")
Cc: <stable@vger.kernel.org> # v4.9+
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17 20:39:21 +01:00
arch ARM: dts: pandora-common: define wl1251 as child node of mmc3 2019-12-17 20:39:09 +01:00
block block: fix the DISCARD request merge 2019-12-01 09:13:49 +01:00
certs Replace magic for trusting the secondary keyring with #define 2018-09-09 19:55:54 +02:00
crypto crypto: user - fix memory leak in crypto_report 2019-12-17 20:38:55 +01:00
Documentation USB: documentation: flags on usb-storage versus UAS 2019-12-17 20:39:03 +01:00
drivers rtlwifi: rtl8192de: Fix missing enable interrupt flag 2019-12-17 20:39:20 +01:00
firmware License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fs ovl: relax WARN_ON() on rename to self 2019-12-17 20:39:21 +01:00
include appletalk: Fix potential NULL pointer dereference in unregister_snap_client 2019-12-17 20:38:59 +01:00
init fork: fix some -Wmissing-prototypes warnings 2019-12-05 15:37:52 +01:00
ipc ipc/mqueue.c: only perform resource calculation if user valid 2019-08-06 19:05:24 +02:00
kernel sched/fair: Scale bandwidth quota and period without losing quota/period ratio precision 2019-12-17 20:38:43 +01:00
lib lib: raid6: fix awk build warnings 2019-12-17 20:39:21 +01:00
mm mm/vmstat.c: fix NUMA statistics updates 2019-12-17 20:37:57 +01:00
net appletalk: Set error code if register_snap_client failed 2019-12-17 20:38:59 +01:00
samples vfio-mdev/samples: Use u8 instead of char for handle functions 2019-12-05 15:37:27 +01:00
scripts modpost: skip ELF local symbols during section mismatch check 2019-12-17 20:38:30 +01:00
security apparmor: delete the dentry in aafs_remove() to avoid a leak 2019-12-05 15:38:01 +01:00
sound ASoC: rsnd: fixup MIX kctrl registration 2019-12-17 20:38:58 +01:00
tools usbip: tools: fix fd leakage in the function of read_attr_usbip_status 2019-12-01 09:14:29 +01:00
usr kbuild: clean compressed initramfs image 2019-10-07 18:55:14 +02:00
virt KVM: arm/arm64: vgic: Don't rely on the wrong pending table 2019-12-17 20:38:51 +01:00
.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 USB: rio500: Remove Rio 500 kernel driver 2019-10-17 13:43:20 -07:00
Makefile kbuild: fix single target build for external module 2019-12-17 20:38:31 +01:00
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.