Kefeng Wang b79ba5953f mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath() ... commit ac86f547ca upstream. As commit 18365225f0 ("hwpoison, memcg: forcibly uncharge LRU pages"), hwpoison will forcibly uncharg a LRU hwpoisoned page, the folio_memcg could be NULl, then, mem_cgroup_track_foreign_dirty_slowpath() could occurs a NULL pointer dereference, let's do not record the foreign writebacks for folio memcg is null in mem_cgroup_track_foreign_dirty() to fix it. Link: https://lkml.kernel.org/r/20230129040945.180629-1-wangkefeng.wang@huawei.com Fixes: 97b27821b4 ("writeback, memcg: Implement foreign dirty flushing") Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reported-by: Ma Wupeng <mawupeng1@huawei.com> Tested-by: Miko Larsson <mikoxyzzz@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Ma Wupeng <mawupeng1@huawei.com> Cc: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-02-09 11:28:21 +01:00
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acpi	ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops	2023-01-18 11:58:11 +01:00
asm-generic	15 hotfixes. 11 marked cc:stable. Only three or four of the latter	2022-12-02 13:39:38 -08:00
clocksource
crypto
drm	drm/drm_vma_manager: Add drm_vma_node_allow_once()	2023-02-01 08:34:42 +01:00
dt-bindings	dt-bindings: clocks: imx8mp: Add ID for usb suspend clock	2022-12-31 13:33:09 +01:00
keys
kunit	kunit: fix kunit_test_init_section_suites(...)	2023-02-09 11:28:08 +01:00
kvm
linux	mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath()	2023-02-09 11:28:21 +01:00
math-emu
media	media: dvbdev: fix build warning due to comments	2022-12-31 13:33:12 +01:00
memory
misc
net	wifi: mac80211: Proper mark iTXQs for resumption	2023-02-01 08:34:35 +01:00
pcmcia
ras
rdma
rv
scsi	scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress	2023-02-09 11:28:12 +01:00
soc	ARM: at91: pm: avoid soft resetting AC DLL	2022-11-01 12:25:19 +02:00
sound	ALSA: hda/hdmi: fix stream-id config keep-alive for rt suspend	2022-12-31 13:33:07 +01:00
target
trace	btrfs: fix trace event name typo for FLUSH_DELAYED_REFS	2023-01-24 07:24:30 +01:00
uapi	netfilter: conntrack: unify established states for SCTP paths	2023-02-01 08:34:51 +01:00
ufs	scsi: ufs: core: Fix devfreq deadlocks	2023-02-01 08:34:39 +01:00
vdso
video
xen