Matthew Wilcox (Oracle) 9ddb3c14af mm: fix struct page layout on 32-bit systems ... 32-bit architectures which expect 8-byte alignment for 8-byte integers and need 64-bit DMA addresses (arm, mips, ppc) had their struct page inadvertently expanded in 2019. When the dma_addr_t was added, it forced the alignment of the union to 8 bytes, which inserted a 4 byte gap between 'flags' and the union. Fix this by storing the dma_addr_t in one or two adjacent unsigned longs. This restores the alignment to that of an unsigned long. We always store the low bits in the first word to prevent the PageTail bit from being inadvertently set on a big endian platform. If that happened, get_user_pages_fast() racing against a page which was freed and reallocated to the page_pool could dereference a bogus compound_head(), which would be hard to trace back to this cause. Link: https://lkml.kernel.org/r/20210510153211.1504886-1-willy@infradead.org Fixes: c25fff7171 ("mm: add dma_addr_t to struct page") Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Tested-by: Matteo Croce <mcroce@linux.microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-05-14 19:41:32 -07:00
..
9p
bluetooth	Bluetooth: Allow Microsoft extension to indicate curve validation	2021-04-08 12:26:34 +02:00
caif
iucv	net/af_iucv: don't track individual TX skbs for TRANS_HIPER sockets	2021-01-28 20:36:21 -08:00
netfilter	netfilter: nftables: add catch-all set element support	2021-04-27 18:06:29 +02:00
netns	netfilter: remove all xt_table anchors from struct net	2021-04-26 03:20:47 +02:00
nfc	net: nfc: nci: drop nci_uart_ops::recv_buf	2021-03-10 09:34:07 +01:00
phonet
sctp	sctp: do asoc update earlier in sctp_sf_do_dupcook_b	2021-04-30 15:06:34 -07:00
tc_act	net/sched: act_police: add support for packet-per-second policing	2021-03-13 14:18:09 -08:00
6lowpan.h
act_api.h	net: sched: fix err handler in tcf_action_init()	2021-04-08 13:47:33 -07:00
addrconf.h	net: bridge: mcast: fix broken length + header check for MRDv6 Adv.	2021-04-27 14:02:06 -07:00
af_ieee802154.h
af_rxrpc.h	afs: Don't truncate iter during data fetch	2021-04-23 10:17:26 +01:00
af_unix.h
af_vsock.h
ah.h
arp.h
atmclip.h
ax25.h
ax88796.h
bareudp.h
bond_3ad.h
bond_alb.h
bond_options.h
bonding.h	net/bonding: Declare TLS RX device offload support	2021-01-18 20:48:40 -08:00
bpf_sk_storage.h	bpf: struct sock is declared twice in bpf_sk_storage header	2021-03-26 17:43:55 +01:00
busy_poll.h
calipso.h
cfg80211-wext.h
cfg80211.h	nl80211/cfg80211: add a flag to negotiate for LMR feedback in NDP ranging	2021-04-19 12:02:51 +02:00
cfg802154.h
checksum.h
cipso_ipv4.h
cls_cgroup.h
codel.h
codel_impl.h
codel_qdisc.h
compat.h
datalink.h
dcbevent.h
dcbnl.h
devlink.h	devlink: Extend SF port attributes to have external attribute	2021-04-24 00:58:53 -07:00
dn.h
dn_dev.h
dn_fib.h
dn_neigh.h
dn_nsp.h
dn_route.h
dsa.h	net: dsa: free skb->cb usage in core driver	2021-04-27 14:10:15 -07:00
dsfield.h
dst.h	net: Consolidate common blackhole dst ops	2021-03-10 12:24:18 -08:00
dst_cache.h
dst_metadata.h
dst_ops.h
erspan.h
esp.h
espintcp.h
ethoc.h
failover.h
fib_notifier.h
fib_rules.h
firewire.h
flow.h	flow: remove spi key from flowi struct	2021-04-19 12:25:11 +02:00
flow_dissector.h	flow_dissector: constify raw input data argument	2021-03-14 14:46:32 -07:00
flow_offload.h	net: flow_offload: add FLOW_ACTION_PPPOE_PUSH	2021-03-24 12:48:39 -07:00
fou.h
fq.h	net/fq_impl: do not maintain a backlog-sorted list of flows	2021-01-21 13:33:45 +01:00
fq_impl.h	net/fq_impl: do not maintain a backlog-sorted list of flows	2021-01-21 13:33:45 +01:00
garp.h
gen_stats.h
genetlink.h	mptcp: avoid lock_fast usage in accept path	2021-02-12 16:31:46 -08:00
geneve.h
gre.h	ip_gre: add csum offload support for gre header	2021-01-29 20:39:14 -08:00
gro.h	gro: add combined call_gro_receive() + INDIRECT_CALL_INET() helper	2021-03-18 19:51:12 -07:00
gro_cells.h
gtp.h
gue.h
hwbm.h
icmp.h	net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending	2021-02-23 11:29:52 -08:00
ieee80211_radiotap.h
ieee802154_netdev.h
if_inet6.h	mld: add mc_lock for protecting per-interface mld data	2021-03-26 15:14:56 -07:00
ife.h
ila.h
inet6_connection_sock.h
inet6_hashtables.h
inet_common.h	bpf: Allow rewriting to ports under ip_unprivileged_port_start	2021-01-27 18:18:15 -08:00
inet_connection_sock.h	tcp: relookup sock for RST+ACK packets handled by obsolete req sock	2021-03-15 14:34:29 -07:00
inet_ecn.h
inet_frag.h
inet_hashtables.h
inet_sock.h
inet_timewait_sock.h
inetpeer.h
ip.h
ip6_checksum.h
ip6_fib.h	IPv6: Add "offload failed" indication to routes	2021-02-08 16:47:03 -08:00
ip6_route.h	net: allow user to set metric on default route learned via Router Advertisement	2021-01-26 18:39:45 -08:00
ip6_tunnel.h
ip_fib.h	IPv4: Add "offload failed" indication to routes	2021-02-08 16:47:03 -08:00
ip_tunnels.h
ip_vs.h	netfilter: move handlers to net/ip_vs.h	2021-02-04 18:37:57 -08:00
ipcomp.h
ipconfig.h
ipv6.h	seg6: add support for IPv4 decapsulation in ipv6_srh_rcv()	2021-03-11 16:09:21 -08:00
ipv6_frag.h
ipv6_stubs.h	ipv6: add ipv6_dev_find to stubs	2021-03-30 13:29:39 -07:00
ipx.h
iw_handler.h
kcm.h
l3mdev.h
lag.h
lapb.h	net: lapb: Make "lapb_t1timer_running" able to detect an already running timer	2021-03-23 14:14:50 -07:00
lib80211.h
llc.h
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
lwtunnel.h
mac80211.h	mac80211: make ieee80211_vif_to_wdev work when the vif isn't in the driver	2021-04-19 12:03:13 +02:00
mac802154.h
macsec.h
mip6.h
mld.h	mld: add new workqueues for process mld events	2021-03-26 15:14:56 -07:00
mpls.h
mpls_iptunnel.h
mptcp.h	mptcp: use mptcp_addr_info in mptcp_out_options	2021-04-07 14:09:39 -07:00
mrp.h
ncsi.h
ndisc.h
neighbour.h
net_failover.h
net_namespace.h	net: dccp: use net_generic storage	2021-04-09 16:34:56 -07:00
net_ratelimit.h
netevent.h
netlabel.h
netlink.h
netprio_cgroup.h
netrom.h
nexthop.h	nexthop: Rename artifacts related to legacy multipath nexthop groups	2021-03-28 17:53:39 -07:00
nl802154.h
nsh.h
p8022.h
page_pool.h	mm: fix struct page layout on 32-bit systems	2021-05-14 19:41:32 -07:00
pie.h
ping.h
pkt_cls.h	sch_htb: Hierarchical QoS hardware offload	2021-01-22 20:41:29 -08:00
pkt_sched.h	net: add a helper to avoid issues with HW TX timestamping and SO_TXTIME	2021-03-10 12:45:16 -08:00
pptp.h
protocol.h
psample.h	psample: Add additional metadata attributes	2021-03-14 15:00:43 -07:00
psnap.h
raw.h
rawv6.h
red.h	sch_red: fix off-by-one checks in red_check_params()	2021-03-25 17:40:43 -07:00
regulatory.h
request_sock.h
rose.h
route.h
rpl.h
rsi_91x.h
rtnetlink.h	ipv6: report errors for iftoken via netlink extack	2021-04-08 13:52:36 -07:00
rtnh.h
sch_generic.h	net/sched: act_police: add support for packet-per-second policing	2021-03-13 14:18:09 -08:00
scm.h
secure_seq.h
seg6.h
seg6_hmac.h
seg6_local.h
selftests.h	net: selftest: fix build issue if INET is disabled	2021-04-28 14:06:45 -07:00
slhc_vj.h
smc.h
snmp.h
sock.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-04-25 18:02:32 -07:00
sock_reuseport.h
Space.h
stp.h
strparser.h
switchdev.h	net: bridge: switchdev: include local flag in FDB notifications	2021-04-16 15:15:45 -07:00
tcp.h	skmsg: Pass psock pointer to ->psock_update_sk_prot()	2021-04-12 17:34:27 +02:00
tcp_states.h
timewait_sock.h
tipc.h
tls.h
tls_toe.h
transp_v6.h
tso.h
tun_proto.h
udp.h	skmsg: Pass psock pointer to ->psock_update_sk_prot()	2021-04-12 17:34:27 +02:00
udp_tunnel.h	udp: call udp_encap_enable for v6 sockets when enabling encap	2021-02-04 18:37:14 -08:00
udplite.h
vsock_addr.h
vxlan.h
wext.h
x25.h
x25device.h
xdp.h	net, veth: Alloc skb in bulk for ndo_xdp_xmit	2021-02-04 01:00:07 +01:00
xdp_priv.h
xdp_sock.h	bpf, xdp: Make bpf_redirect_map() a map operation	2021-03-10 01:06:34 +01:00
xdp_sock_drv.h
xfrm.h	xfrm: Fix NULL pointer dereference on policy lookup	2021-03-24 10:00:24 +01:00
xsk_buff_pool.h