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Miaohe Lin 053cfda102 mm/page_alloc.c: avoid accessing uninitialized pcp page migratetype
If it's not prepared to free unref page, the pcp page migratetype is
unset.  Thus we will get rubbish from get_pcppage_migratetype() and
might list_del(&page->lru) again after it's already deleted from the list
leading to grumble about data corruption.

Link: https://lkml.kernel.org/r/20210902115447.57050-1-linmiaohe@huawei.com
Fixes: df1acc8569 ("mm/page_alloc: avoid conflating IRQs disabled with zone->lock")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08 18:45:53 -07:00
Documentation Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
arch Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
block block-5.15-2021-09-05 2021-09-06 10:06:26 -07:00
certs certs: Add support for using elliptic curve keys for signing modules 2021-08-23 19:55:42 +03:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-08-30 12:57:10 -07:00
drivers Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
fs Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
include mm/hugetlb: initialize hugetlb_usage in mm_init 2021-09-08 18:45:53 -07:00
init Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
ipc Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
kernel mm/hugetlb: initialize hugetlb_usage in mm_init 2021-09-08 18:45:53 -07:00
lib Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
mm mm/page_alloc.c: avoid accessing uninitialized pcp page migratetype 2021-09-08 18:45:53 -07:00
net Networking stragglers and fixes for 5.15-rc1, including changes from netfilter, 2021-09-07 14:02:58 -07:00
samples kgdb patches for 5.15 2021-09-07 12:08:04 -07:00
scripts Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
security Kbuild updates for v5.15 2021-09-03 15:33:47 -07:00
sound Kbuild updates for v5.15 2021-09-03 15:33:47 -07:00
tools Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
usr .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
virt KVM: Drop unused kvm_dirty_gfn_invalid() 2021-09-06 08:23:46 -04:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +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 .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: update email address of Matthias Fuchs and Thomas Körper 2021-08-19 09:39:44 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: move Murali Karicheri to credits 2021-04-29 15:47:30 -07:00
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 Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
Makefile Makefile: use -Wno-main in the full kernel tree 2021-09-08 09:44:42 -07:00
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.