Liu Zixian 22b11dbbf9 mm/hugetlb: initialize hugetlb_usage in mm_init ... commit 13db8c5047 upstream. After fork, the child process will get incorrect (2x) hugetlb_usage. If a process uses 5 2MB hugetlb pages in an anonymous mapping, HugetlbPages: 10240 kB and then forks, the child will show, HugetlbPages: 20480 kB The reason for double the amount is because hugetlb_usage will be copied from the parent and then increased when we copy page tables from parent to child. Child will have 2x actual usage. Fix this by adding hugetlb_count_init in mm_init. Link: https://lkml.kernel.org/r/20210826071742.877-1-liuzixian4@huawei.com Fixes: 5d317b2b65 ("mm: hugetlb: proc: add HugetlbPages field to /proc/PID/status") Signed-off-by: Liu Zixian <liuzixian4@huawei.com> Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-09-22 12:26:37 +02:00
..
acpi	ACPI: fix NULL pointer dereference	2021-08-08 09:04:08 +02:00
asm-generic	vmlinux.lds.h: Handle clang's module.{c,d}tor sections	2021-08-18 08:57:04 +02:00
clocksource
crypto	crypto: public_key: fix overflow during implicit conversion	2021-09-22 12:26:21 +02:00
drm	drm: Return -ENOTTY for non-drm ioctls	2021-07-28 13:31:01 +02:00
dt-bindings
keys	certs: Add EFI_CERT_X509_GUID support for dbx entries	2021-06-30 08:47:55 -04:00
kvm
linux	mm/hugetlb: initialize hugetlb_usage in mm_init	2021-09-22 12:26:37 +02:00
math-emu
media	media: subdev: disallow ioctl for saa6588/davinci	2021-07-19 08:53:17 +02:00
misc
net	psample: Add a fwd declaration for skbuff	2021-08-18 08:56:59 +02:00
pcmcia
ras
rdma
scsi	scsi: iscsi: Fix conn use after free during resets	2021-07-20 16:10:43 +02:00
soc
sound
target
trace	afs: Fix tracepoint string placement with built-in AFS	2021-07-28 13:30:58 +02:00
uapi	serial: 8250: Define RX trigger levels for OxSemi 950 devices	2021-09-22 12:26:29 +02:00
vdso
video
xen