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Mathias Nyman df4bf4dceb xhci: handle port status events for removed USB3 hcd 
commit 1245374e9b upstream.

At xhci removal the USB3 hcd (shared_hcd) is removed before the primary
USB2 hcd. Interrupts for port status changes may still occur for USB3
ports after the shared_hcd is freed, causing  NULL pointer dereference.

Check if xhci->shared_hcd is still valid before handing USB3 port events

Cc: <stable@vger.kernel.org>
Reported-by: Peter Chen <peter.chen@nxp.com>
Tested-by: Jack Pham <jackp@codeaurora.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: Macpaul Lin <macpaul.lin@mediatek.com>
[redone for 4.14.y based on Mathias's comments]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-11 18:03:09 +01:00
arch powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems 2020-03-11 18:03:08 +01:00
block block: don't use bio->bi_vcnt to figure out segment number 2020-01-27 14:46:19 +01:00
certs Replace magic for trusting the secondary keyring with #define 2018-09-09 19:55:54 +02:00
crypto crypto: api - Fix race condition in crypto_spawn_alg 2020-02-14 16:32:14 -05:00
Documentation PM / devfreq: Add new name attribute for sysfs 2020-02-05 14:18:12 +00:00
drivers xhci: handle port status events for removed USB3 hcd 2020-03-11 18:03:09 +01:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:20:30 +01:00
fs fat: fix uninit-memory access for partial initialized inode 2020-03-11 18:03:03 +01:00
include include/linux/bitops.h: introduce BITS_PER_TYPE 2020-03-11 18:02:52 +01:00
init fork: fix some -Wmissing-prototypes warnings 2019-12-05 15:37:52 +01:00
ipc Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()" 2020-02-28 16:36:12 +01:00
kernel kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic 2020-03-11 18:02:57 +01:00
lib lib/stackdepot.c: fix global out-of-bounds in stack_slabs 2020-02-28 16:36:13 +01:00
mm mm, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa 2020-03-11 18:03:02 +01:00
net net: netlink: cap max groups which will be considered in netlink_bind() 2020-03-11 18:02:52 +01:00
samples samples/bpf: Don't try to remove user's homedir on clean 2020-02-14 16:32:13 -05:00
scripts kconfig: fix broken dependency in randconfig-generated .config 2020-02-28 16:35:59 +01:00
security selinux: ensure we cleanup the internal AVC counters on error in avc_update() 2020-02-28 16:36:09 +01:00
sound ASoC: dapm: Correct DAPM handling of active widgets during shutdown 2020-03-11 18:03:06 +01:00
tools selftests: fix too long argument 2020-03-11 18:02:58 +01:00
usr kbuild: clean compressed initramfs image 2019-10-07 18:55:14 +02:00
virt KVM: Check for a bad hva before dropping into the ghc slow path 2020-03-11 18:02:53 +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 MAINTAINERS: Update drm/i915 bug filing URL 2020-02-28 16:36:12 +01:00
Makefile Linux 4.14.172 2020-02-28 16:36:17 +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.