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Peter Xu b76e4eb02e mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in 
commit 515778e2d7 upstream.

When PTE_MARKER_UFFD_WP not configured, it's still possible to reach pte
marker code and trigger an warning. Add a few CONFIG_PTE_MARKER_UFFD_WP
ifdefs to make sure the code won't be reached when not compiled in.

Link: https://lkml.kernel.org/r/YzeR+R6b4bwBlBHh@x1n
Fixes: b1f9e87686 ("mm/uffd: enable write protection for shmem & hugetlbfs")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: <syzbot+2b9b4f0895be09a6dec3@syzkaller.appspotmail.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Brian Geffon <bgeffon@google.com>
Cc: Edward Liaw <edliaw@google.com>
Cc: Liu Shixin <liushixin2@huawei.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-10-24 09:56:48 +02:00
arch arm64: errata: Add Cortex-A55 to the repeat tlbi list 2022-10-24 09:56:48 +02:00
block Revert "block: freeze the queue earlier in del_gendisk" 2022-09-28 11:32:28 +02:00
certs certs: make system keyring depend on built-in x509 parser 2022-09-28 11:32:27 +02:00
crypto KEYS: asymmetric: enforce SM2 signature use pkey algo 2022-08-17 15:16:17 +02:00
Documentation arm64: errata: Add Cortex-A55 to the repeat tlbi list 2022-10-24 09:56:48 +02:00
drivers clocksource/drivers/arm_arch_timer: Fix CNTPCT_LO and CNTVCT_LO value 2022-10-24 09:56:48 +02:00
fs quota: Check next/prev free block number after reading from quota file 2022-10-24 09:56:44 +02:00
include mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page 2022-10-24 09:56:48 +02:00
init arm64: fix rodata=full 2022-08-31 17:18:19 +02:00
io_uring io_uring: correct pinned_vm accounting 2022-10-24 09:56:40 +02:00
ipc ipc: Free mq_sysctls if ipc namespace creation failed 2022-06-22 17:47:41 -05:00
kernel btf: Export bpf_dynptr definition 2022-10-24 09:56:43 +02:00
lib Makefile.debug: re-enable debug info for .S files 2022-09-28 11:32:27 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in 2022-10-24 09:56:48 +02:00
net io_uring/af_unix: defer registered files gc to io_uring release 2022-10-24 09:56:40 +02:00
samples sample: bpf: xdp_router_ipv4: Allow the kernel to send arp requests 2022-08-17 15:14:25 +02:00
scripts Makefile.extrawarn: Move -Wcast-function-type-strict to W=1 2022-10-12 09:51:23 +02:00
security efi: Correct Macmini DMI match in uefi cert quirk 2022-10-15 08:01:43 +02:00
sound ASoC: wcd934x: fix order of Slimbus unprepare/disable 2022-10-24 09:56:44 +02:00
tools perf tests record: Fail the test if the 'errs' counter is not zero 2022-10-05 10:40:54 +02:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: Unconditionally get a ref to /dev/kvm module when creating a VM 2022-08-25 11:45:05 +02:00
.clang-format clang-format: Fix space after for_each macros 2022-05-20 19:27:16 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap ARM: SoC fixes for 5.19, part 4 2022-07-27 09:43:07 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: mark ARM/PALM TREO SUPPORT orphan 2022-07-07 15:17:00 +02:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS io_uring: move to separate directory 2022-08-17 15:14:20 +02:00
Makefile Linux 5.19.16 2022-10-15 08:01:46 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.