Felix Maurer 5d75e374eb bpf: Do not try bpf_msg_push_data with len 0 ... commit 4a11678f68 upstream. If bpf_msg_push_data() is called with len 0 (as it happens during selftests/bpf/test_sockmap), we do not need to do anything and can return early. Calling bpf_msg_push_data() with len 0 previously lead to a wrong ENOMEM error: we later called get_order(copy + len); if len was 0, copy + len was also often 0 and get_order() returned some undefined value (at the moment 52). alloc_pages() caught that and failed, but then bpf_msg_push_data() returned ENOMEM. This was wrong because we are most probably not out of memory and actually do not need any additional memory. Fixes: 6fff607e2f ("bpf: sk_msg program helper bpf_msg_push_data") Signed-off-by: Felix Maurer <fmaurer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/df69012695c7094ccb1943ca02b4920db3537466.1644421921.git.fmaurer@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-03-02 11:47:55 +01:00
..
6lowpan	6lowpan: iphc: Fix an off-by-one check of array index	2021-07-22 16:19:03 +02:00
9p	9p/net: fix missing error check in p9_check_errors	2021-11-18 19:17:16 +01:00
802	net: 802: remove dead leftover after ipx driver removal	2021-08-13 16:30:35 -07:00
8021q	net: vlan: fix underflow for the real_dev refcnt	2021-12-01 09:04:53 +01:00
appletalk	net: socket: rework compat_ifreq_ioctl()	2021-07-23 14:20:25 +01:00
atm
ax25	ax25: improve the incomplete fix to avoid UAF and NPD bugs	2022-02-23 12:03:05 +01:00
batman-adv	batman-adv: allow netlink usage in unprivileged containers	2022-01-27 11:04:25 +01:00
bluetooth	Bluetooth: refactor malicious adv data check	2022-02-01 17:27:14 +01:00
bpf	bpf, test, cgroup: Use sk_{alloc,free} for test cases	2021-09-28 09:29:28 +02:00
bpfilter
bridge	net: bridge: multicast: notify switchdev driver whenever MC processing gets disabled	2022-02-23 12:03:13 +01:00
caif	net-caif: avoid user-triggerable WARN_ON(1)	2021-09-14 12:51:15 +01:00
can	can: isotp: fix error path in isotp_sendmsg() to unlock wait queue	2022-02-16 12:56:05 +01:00
ceph	Networking changes for 5.14.	2021-06-30 15:51:09 -07:00
core	bpf: Do not try bpf_msg_push_data with len 0	2022-03-02 11:47:55 +01:00
dcb
dccp	tcp: switch orphan_count to bare per-cpu counters	2021-11-18 19:16:33 +01:00
decnet	net: Remove redundant if statements	2021-08-05 13:27:50 +01:00
dns_resolver
dsa	net: dsa: lan9303: handle hwaccel VLAN tags	2022-02-23 12:03:11 +01:00
ethernet	move netdev_boot_setup into Space.c	2021-08-03 13:05:26 +01:00
ethtool	ethtool: do not perform operations on net devices being unregistered	2021-12-14 10:57:09 +01:00
hsr
ieee802154	net: ieee802154: Return meaningful error codes from the netlink helpers	2022-02-08 18:34:09 +01:00
ife
ipv4	ping: remove pr_err from ping_lookup	2022-03-02 11:47:52 +01:00
ipv6	ipv6: per-netns exclusive flowlabel checks	2022-02-23 12:03:10 +01:00
iucv	net/iucv: Replace deprecated CPU-hotplug functions.	2021-08-09 10:13:32 +01:00
kcm
key
l2tp	net/l2tp: Fix reference count leak in l2tp_udp_recv_core	2021-09-09 11:00:20 +01:00
l3mdev
lapb
llc	net: Remove redundant if statements	2021-08-05 13:27:50 +01:00
mac80211	mac80211: mlme: check for null after calling kmemdup	2022-02-23 12:03:10 +01:00
mac802154	ieee802154: Remove redundant initialization of variable ret	2021-09-07 14:06:08 +01:00
mctp	mctp: Don't let RTM_DELROUTE delete local routes	2021-12-08 09:04:53 +01:00
mpls	net: mpls: Fix notifications when deleting a device	2021-12-08 09:04:47 +01:00
mptcp	mptcp: add mibs counter for ignored incoming options	2022-03-02 11:47:53 +01:00
ncsi	net/ncsi: check for error return from call to nla_put_u32	2022-01-05 12:42:37 +01:00
netfilter	netfilter: nf_tables_offload: incorrect flow offload action array size	2022-03-02 11:47:51 +01:00
netlabel	net: fix NULL pointer reference in cipso_v4_doi_free	2021-08-30 12:23:18 +01:00
netlink	net: netlink: af_netlink: Prevent empty skb by adding a check on len.	2021-12-17 10:30:15 +01:00
netrom	netrom: fix api breakage in nr_setsockopt()	2022-01-27 11:04:00 +01:00
nfc	nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind()	2022-01-27 11:02:48 +01:00
nsh
openvswitch	net: openvswitch: Fix ct_state nat flags for conns arriving from tc	2022-01-27 11:04:02 +01:00
packet	af_packet: fix data-race in packet_setsockopt / packet_setsockopt	2022-02-05 12:38:59 +01:00
phonet	phonet: refcount leak in pep_sock_accep	2022-01-11 15:35:16 +01:00
psample
qrtr	net: qrtr: revert check in qrtr_endpoint_post()	2021-09-02 11:37:02 +01:00
rds	rds: memory leak in __rds_conn_create()	2021-12-22 09:32:42 +01:00
rfkill
rose
rxrpc	rxrpc: Adjust retransmission backoff	2022-02-01 17:27:11 +01:00
sched	net: sched: limit TC_ACT_REPEAT loops	2022-02-23 12:03:21 +01:00
sctp	sctp: hold endpoint before calling cb in sctp_transport_lookup_process	2022-01-11 15:35:14 +01:00
smc	net/smc: Avoid overwriting the copies of clcsock callback functions	2022-02-23 12:03:12 +01:00
strparser	bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding	2021-11-18 19:17:11 +01:00
sunrpc	xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create	2022-02-23 12:03:19 +01:00
switchdev	net: make switchdev_bridge_port_{,unoffload} loosely coupled with the bridge	2021-08-04 12:35:07 +01:00
tipc	tipc: fix wrong notification node addresses	2022-02-23 12:03:14 +01:00
tls	net/tls: Fix authentication failure in CCM mode	2021-12-08 09:04:41 +01:00
unix	af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress	2022-01-27 11:05:30 +01:00
vmw_vsock	vsock: remove vsock from connected table when connect is interrupted by a signal	2022-02-23 12:03:09 +01:00
wireless	cfg80211: fix race in netlink owner interface destruction	2022-02-23 12:03:11 +01:00
x25
xdp	Revert "xsk: Do not sleep in poll() when need_wakeup set"	2021-12-22 09:32:51 +01:00
xfrm	xfrm: Don't accidentally set RTO_ONLINK in decode_session4()	2022-01-27 11:05:36 +01:00
compat.c
devres.c
Kconfig	mctp: Add MCTP base	2021-07-29 15:06:49 +01:00
Makefile	mctp: Add MCTP base	2021-07-29 15:06:49 +01:00
socket.c	net: fix SOF_TIMESTAMPING_BIND_PHC to work with multiple sockets	2022-01-27 11:03:52 +01:00
sysctl_net.c