Peter Xu 12eb3c2c1a mm/swap: fix pte_same_as_swp() not removing uffd-wp bit when compare ...

commit 099dd6878b upstream.

I found it by pure code review, that pte_same_as_swp() of unuse_vma()
didn't take uffd-wp bit into account when comparing ptes.
pte_same_as_swp() returning false negative could cause failure to
swapoff swap ptes that was wr-protected by userfaultfd.

Link: https://lkml.kernel.org/r/20210603180546.9083-1-peterx@redhat.com
Fixes: f45ec5ff16 ("userfaultfd: wp: support swap and page migration")
Signed-off-by: Peter Xu <peterx@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>	[5.7+]
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>

2021-06-23 14:42:53 +02:00

..

acpi

ACPI: scan: Use unique number for instance_no

2021-03-30 14:32:06 +02:00

asm-generic

vmlinux.lds.h: Avoid orphan section with !SMP

2021-06-16 12:01:45 +02:00

clocksource

clocksource/drivers/sp804: Remove unused sp804_timer_disable() and timer-sp804.h

2020-09-24 10:51:04 +02:00

crypto

crypto: poly1305 - fix poly1305_core_setkey() declaration

2021-05-14 09:50:13 +02:00

drm

drm/dp/mst: Export drm_dp_get_vc_payload_bw()

2021-02-10 09:29:18 +01:00

dt-bindings

ASoC: dt-bindings: lpass: Fix and common up lpass dai ids

2021-02-03 23:28:46 +01:00

keys

security: keys: trusted: fix TPM2 authorizations

2021-05-14 09:50:20 +02:00

kunit

kunit: fix display of failed expectations for strings

2020-11-10 13:45:15 -07:00

kvm

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2020-10-23 11:17:56 -07:00

linux

mm/swap: fix pte_same_as_swp() not removing uffd-wp bit when compare

2021-06-23 14:42:53 +02:00

math-emu

…

media

media: v4l2-ctrls: fix reference to freed memory

2021-05-11 14:47:39 +02:00

memory

…

misc

…

net

mac80211: Fix NULL ptr deref for injected rate info

2021-06-23 14:42:52 +02:00

pcmcia

…

ras

mm,hwpoison: introduce MF_MSG_UNSPLIT_THP

2020-10-16 11:11:17 -07:00

rdma

RDMA: Lift ibdev_to_node from rds to common code

2021-02-26 10:12:59 +01:00

scsi

Fix misc new gcc warnings

2021-05-11 14:47:36 +02:00

soc

net: dsa: felix: implement port flushing on .phylink_mac_link_down

2021-02-17 11:02:27 +01:00

sound

ALSA: hda: intel-nhlt: verify config type

2021-03-09 11:11:14 +01:00

target

scsi: target: core: Add cmd length set before cmd complete

2021-03-17 17:06:25 +01:00

trace

SUNRPC: Remove trace_xprt_transmit_queued

2021-05-19 10:13:03 +02:00

uapi

icmp: don't send out ICMP messages with a source address of 0.0.0.0

2021-06-23 14:42:47 +02:00

vdso

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video

gpu: ipu-v3: remove unused functions

2020-10-26 10:42:38 +01:00

xen

Xen/gntdev: correct error checking in gntdev_map_grant_pages()

2021-02-23 15:53:24 +01:00