Florian Westphal 7f9644782c bpf: Avoid splat in pskb_pull_reason ... [ Upstream commit 2bbe3e5a2f4ef69d13be54f1cf895b4658287080 ] syzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug hint in pskb_may_pull. We'd like to retain this debug check because it might hint at integer overflows and other issues (kernel code should pull headers, not huge value). In bpf case, this splat isn't interesting at all: such (nonsensical) bpf programs are typically generated by a fuzzer anyway. Do what Eric suggested and suppress such warning. For CONFIG_DEBUG_NET=n we don't need the extra check because pskb_may_pull will do the right thing: return an error without the WARN() backtrace. Fixes: 219eee9c0d16 ("net: skbuff: add overflow debug check to pull/push helpers") Reported-by: syzbot+0c4150bff9fff3bf023c@syzkaller.appspotmail.com Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Closes: https://syzkaller.appspot.com/bug?extid=0c4150bff9fff3bf023c Link: https://lore.kernel.org/netdev/9f254c96-54f2-4457-b7ab-1d9f6187939c@gmail.com/ Link: https://lore.kernel.org/bpf/20240614101801.9496-1-fw@strlen.de Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-27 13:49:06 +02:00
..
6lowpan	6lowpan: Remove redundant initialisation.	2023-03-29 08:22:52 +01:00
9p	net/9p: fix uninit-value in p9_client_rpc()	2024-06-16 13:47:41 +02:00
802	…
8021q	net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb	2024-05-17 12:02:07 +02:00
appletalk	appletalk: Fix Use-After-Free in atalk_ioctl	2023-12-20 17:01:50 +01:00
atm	atm: Fix Use-After-Free in do_vcc_ioctl	2023-12-20 17:01:48 +01:00
ax25	ax25: Replace kfree() in ax25_dev_free() with ax25_dev_put()	2024-06-21 14:38:14 +02:00
batman-adv	batman-adv: bypass empty buckets in batadv_purge_orig_ref()	2024-06-27 13:49:01 +02:00
bluetooth	Bluetooth: fix connection setup in l2cap_connect	2024-06-21 14:38:34 +02:00
bpf	bpf: Set run context for rawtp test_run callback	2024-06-21 14:38:16 +02:00
bpfilter	net: Use umd_cleanup_helper()	2023-05-31 13:06:57 +02:00
bridge	net: bridge: mst: fix suspicious rcu usage in br_mst_set_state	2024-06-21 14:38:36 +02:00
caif	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
can	can: j1939: Fix UAF in j1939_sk_match_filter during setsockopt(SO_J1939_FILTER)	2024-02-23 09:25:17 +01:00
ceph	libceph: fail sparse-read if the data length doesn't match	2024-03-01 13:34:56 +01:00
core	bpf: Avoid splat in pskb_pull_reason	2024-06-27 13:49:06 +02:00
dcb	net: dcb: choose correct policy to parse DCB_ATTR_BCN	2023-08-01 21:07:46 -07:00
dccp	dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses.	2023-11-20 11:59:35 +01:00
devlink	devlink: fix port new reply cmd type	2024-03-26 18:20:11 -04:00
dns_resolver	keys, dns: Fix size check of V1 server-list header	2024-01-25 15:35:41 -08:00
dsa	net: dsa: mark parsed interface mode for legacy switch drivers	2023-08-09 13:08:09 -07:00
ethernet	ethernet: Add helper for assigning packet type when dest address does not match device address	2024-05-02 16:32:46 +02:00
ethtool	net: ethtool: fix the error condition in ethtool_get_phy_stats_ethtool()	2024-06-21 14:38:20 +02:00
handshake	net/handshake: Fix handshake_req_destroy_test1	2024-02-23 09:24:50 +01:00
hsr	hsr: Simplify code for announcing HSR nodes timer setup	2024-05-17 12:02:24 +02:00
ieee802154	sysctl-6.6-rc1	2023-08-29 17:39:15 -07:00
ife	net: sched: ife: fix potential use-after-free	2024-01-01 12:42:30 +00:00
ipv4	cipso: fix total option length computation	2024-06-27 13:49:06 +02:00
ipv6	net/ipv6: Fix the RT cache flush via sysctl using a previous delay	2024-06-21 14:38:35 +02:00
iucv	net/iucv: fix the allocation size of iucv_path_table array	2024-03-26 18:19:12 -04:00
kcm	net: kcm: fix incorrect parameter validation in the kcm_getsockopt) function	2024-03-26 18:19:40 -04:00
key	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-08-18 12:44:56 -07:00
l2tp	net l2tp: drop flow hash on forward	2024-05-17 12:02:02 +02:00
l3mdev	…
lapb	…
llc	llc: call sock_orphan() at release time	2024-02-05 20:14:36 +00:00
mac80211	wifi: mac80211: correctly parse Spatial Reuse Parameter Set element	2024-06-21 14:38:13 +02:00
mac802154	mac802154: fix llsec key resources release in mac802154_llsec_key_del	2024-04-03 15:28:27 +02:00
mctp	net: mctp: copy skb ext data when fragmenting	2024-03-26 18:19:34 -04:00
mpls	net: mpls: error out if inner headers are not set	2024-04-13 13:07:41 +02:00
mptcp	mptcp: pm: update add_addr counters after connect	2024-06-21 14:38:38 +02:00
ncsi	net/ncsi: Fix the multi thread manner of NCSI driver	2024-06-21 14:38:14 +02:00
netfilter	netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type	2024-06-21 14:38:34 +02:00
netlabel	calipso: fix memory leak in netlbl_calipso_add_pass()	2024-01-25 15:35:14 -08:00
netlink	netlink: Fix kernel-infoleak-after-free in __skb_datagram_iter	2024-03-06 14:48:34 +00:00
netrom	netrom: fix possible dead-lock in nr_rt_ioctl()	2024-06-12 11:12:12 +02:00
nfc	nfc: nci: Fix handling of zero-length payload packets in nci_rx_work()	2024-06-12 11:12:51 +02:00
nsh	nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment().	2024-05-17 12:02:02 +02:00
openvswitch	openvswitch: Set the skbuff pkt_type for proper pmtud support.	2024-06-12 11:12:49 +02:00
packet	af_packet: avoid a false positive warning in packet_setsockopt()	2024-06-27 13:49:01 +02:00
phonet	phonet: fix rtm_phonet_notify() skb allocation	2024-05-17 12:02:22 +02:00
psample	psample: Require 'CAP_NET_ADMIN' when joining "packets" group	2023-12-13 18:45:10 +01:00
qrtr	net: qrtr: ns: Fix module refcnt	2024-06-12 11:12:12 +02:00
rds	net/rds: fix possible cp null dereference	2024-04-10 16:35:49 +02:00
rfkill	net: rfkill: gpio: set GPIO direction	2024-01-01 12:42:41 +00:00
rose	net/rose: fix races in rose_kill_by_device()	2024-01-01 12:42:31 +00:00
rxrpc	rxrpc: Only transmit one ACK per jumbo packet received	2024-05-17 12:02:23 +02:00
sched	net/sched: fix false lockdep warning on qdisc root lock	2024-06-27 13:49:02 +02:00
sctp	sctp: fix busy polling	2024-01-25 15:35:30 -08:00
smc	net/smc: avoid overwriting when adjusting sock bufsizes	2024-06-21 14:38:16 +02:00
strparser	…
sunrpc	SUNRPC: return proper error from gss_wrap_req_priv	2024-06-21 14:38:28 +02:00
switchdev	net: bridge: switchdev: Skip MDB replays of deferred events on offload	2024-03-01 13:35:06 +01:00
tipc	tipc: fix UAF in error path	2024-05-17 12:02:32 +02:00
tls	tls: fix missing memory barrier in tls_init	2024-06-12 11:12:50 +02:00
unix	af_unix: Read with MSG_PEEK loops if the first unread byte is OOB	2024-06-21 14:38:36 +02:00
vmw_vsock	vsock/virtio: fix packet delivery to tap device	2024-04-10 16:35:50 +02:00
wireless	wifi: cfg80211: pmsr: use correct nla_get_uX functions	2024-06-21 14:38:12 +02:00
x25	net/x25: fix incorrect parameter validation in the x25_getsockopt() function	2024-03-26 18:19:41 -04:00
xdp	xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING	2024-04-17 11:19:28 +02:00
xfrm	net: fix __dst_negative_advice() race	2024-06-16 13:47:44 +02:00
Kconfig	bpf: Add fd-based tcx multi-prog infra with link support	2023-07-19 10:07:27 -07:00
Kconfig.debug	…
Makefile	net/handshake: Create a NETLINK service for handling handshake requests	2023-04-19 18:48:48 -07:00
compat.c	net/compat: Update msg_control_is_user when setting a kernel pointer	2023-04-14 11:09:27 +01:00
devres.c	…
socket.c	net: Save and restore msg_namelen in sock_sendmsg	2024-01-10 17:16:51 +01:00
sysctl_net.c	sysctl: Add size to register_net_sysctl function	2023-08-15 15:26:17 -07:00