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Alexander Potapenko b8dc994624 UPSTREAM: PM: hibernate: fix crashes with init_on_free=1 
Upon resuming from hibernation, free pages may contain stale data from
the kernel that initiated the resume. This breaks the invariant
inflicted by init_on_free=1 that freed pages must be zeroed.

To deal with this problem, make clear_free_pages() also clear the free
pages when init_on_free is enabled.

Fixes: 6471384af2 ("mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options")
Reported-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: 5.3+ <stable@vger.kernel.org> # 5.3+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit 18451f9f9e)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I32c22a60082bb3b49eae7de3c7d9d5ae2b965dc5
2020-11-16 09:22:34 +01:00
android
ANDROID: GKI: update the ABI xml
2020-10-30 12:21:53 +08:00
arch
UPSTREAM: ARM: bcm2835_defconfig: Explicitly restore CONFIG_DEBUG_FS
2020-11-16 07:43:08 +01:00
block
Merge 4.19.156 into android-4.19-stable
2020-11-10 13:23:09 +01:00
certs
export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()
2018-08-22 23:21:44 +09:00
crypto
Merge 4.19.153 into android-4.19-stable
2020-10-29 11:36:20 +01:00
Documentation
Merge 4.19.155 into android-4.19-stable
2020-11-05 14:02:27 +01:00
drivers
UPSTREAM: binderfs: use refcount for binder control devices too
2020-11-16 07:43:08 +01:00
firmware
Fix built-in early-load Intel microcode alignment
2020-01-23 08:21:29 +01:00
fs
UPSTREAM: fscrypt: restrict IV_INO_LBLK_* to AES-256-XTS
2020-11-15 15:06:09 +01:00
include
UPSTREAM: ipv6: ndisc: RFC-ietf-6man-ra-pref64-09 is now published as RFC8781
2020-11-16 07:43:08 +01:00
init
Merge 4.19.155 into android-4.19-stable
2020-11-05 14:02:27 +01:00
ipc
Revert "ANDROID: vfs: Add permission2 for filesystems with per mount permissions"
2020-06-27 15:17:42 +02:00
kernel
UPSTREAM: PM: hibernate: fix crashes with init_on_free=1
2020-11-16 09:22:34 +01:00
lib
Merge 4.19.156 into android-4.19-stable
2020-11-10 13:23:09 +01:00
LICENSES
LICENSES: Remove CC-BY-SA-4.0 license text
2018-10-18 11:28:50 +02:00
mm
UPSTREAM: mm/filemap.c: don't bother dropping mmap_sem for zero size readahead
2020-11-16 07:43:08 +01:00
net
Merge 4.19.156 into android-4.19-stable
2020-11-10 13:23:09 +01:00
samples
Merge 4.19.154 into android-4.19-stable
2020-10-30 11:43:26 +01:00
scripts
Revert "ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple"
2020-11-10 11:47:24 -08:00
security
Merge 4.19.155 into android-4.19-stable
2020-11-05 14:02:27 +01:00
sound
Merge 4.19.156 into android-4.19-stable
2020-11-10 13:23:09 +01:00
tools
Merge 4.19.156 into android-4.19-stable
2020-11-10 13:23:09 +01:00
usr
initramfs: restore default compression behavior
2020-04-13 10:44:59 +02:00
virt
KVM: arm64: Assume write fault on S1PTW permission fault on instruction fetch
2020-10-01 13:14:54 +02:00
.clang-format
clang-format: Set IndentWrappedFunctionNames false
2018-08-01 18:38:51 +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
Merge tag 'kbuild-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2018-04-15 17:21:30 -07:00
.mailmap
Merge tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm
2018-08-25 18:13:10 -07:00
build.config.aarch64
Revert "ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple"
2020-11-10 11:47:24 -08:00
build.config.allmodconfig
Revert "ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple"
2020-11-10 11:47:24 -08:00
build.config.allmodconfig.aarch64
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.allmodconfig.arm
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.allmodconfig.x86_64
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.arm
Revert "ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple"
2020-11-10 11:47:24 -08:00
build.config.common
ANDROID: clang: update to 11.0.5
2020-10-27 11:18:23 -07:00
build.config.gki
ANDROID: gki: Removed cf modules from gki_defconfig
2020-01-31 16:23:38 -08:00
build.config.gki_kasan
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.gki_kasan.aarch64
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.gki_kasan.x86_64
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.gki-debug.aarch64
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.gki-debug.x86_64
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.gki.aarch64
ANDROID: GKI: prevent removal of monitored symbols
2020-09-29 11:48:43 +01:00
build.config.gki.x86_64
ANDROID: drop KERNEL_DIR setting in build.config.common
2020-09-25 15:14:51 +08:00
build.config.x86_64
Revert "ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple"
2020-11-10 11:47:24 -08:00
COPYING
COPYING: use the new text with points to the license files
2018-03-23 12:41:45 -06:00
CREDITS
9p: remove Ron Minnich from MAINTAINERS
2018-08-17 16:20:26 -07:00
Kbuild
Merge tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2017-11-17 17:45:29 -08:00
Kconfig
kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt
2018-08-02 08:06:55 +09:00
MAINTAINERS
UPSTREAM: net: WireGuard secure network tunnel
2020-10-25 11:48:12 +01:00
Makefile
Merge 4.19.157 into android-4.19-stable
2020-11-11 11:16:11 +01:00
README
Docs: Added a pointer to the formatted docs to README
2018-03-21 09:02:53 -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.
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.
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