Eric Dumazet 615501d41b udp: annotate data-races around up->pending ... [ Upstream commit 482521d8e0 ] up->pending can be read without holding the socket lock, as pointed out by syzbot [1] Add READ_ONCE() in lockless contexts, and WRITE_ONCE() on write side. [1] BUG: KCSAN: data-race in udpv6_sendmsg / udpv6_sendmsg write to 0xffff88814e5eadf0 of 4 bytes by task 15547 on cpu 1: udpv6_sendmsg+0x1405/0x1530 net/ipv6/udp.c:1596 inet6_sendmsg+0x63/0x80 net/ipv6/af_inet6.c:657 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x257/0x310 net/socket.c:2192 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0x78/0x90 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff88814e5eadf0 of 4 bytes by task 15551 on cpu 0: udpv6_sendmsg+0x22c/0x1530 net/ipv6/udp.c:1373 inet6_sendmsg+0x63/0x80 net/ipv6/af_inet6.c:657 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x37c/0x4d0 net/socket.c:2586 ___sys_sendmsg net/socket.c:2640 [inline] __sys_sendmmsg+0x269/0x500 net/socket.c:2726 __do_sys_sendmmsg net/socket.c:2755 [inline] __se_sys_sendmmsg net/socket.c:2752 [inline] __x64_sys_sendmmsg+0x57/0x60 net/socket.c:2752 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x00000000 -> 0x0000000a Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 15551 Comm: syz-executor.1 Tainted: G W 6.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Reported-by: syzbot+8d482d0e407f665d9d10@syzkaller.appspotmail.com Link: https://lore.kernel.org/netdev/0000000000009e46c3060ebcdffd@google.com/ Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-01-25 15:27:49 -08:00
..
ila	ila: do not generate empty messages in ila_xlat_nl_cmd_get_mapping()	2023-03-17 08:50:23 +01:00
netfilter	netfilter: tproxy: fix deadlock due to missing BH disable	2023-03-17 08:50:25 +01:00
addrconf.c	net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX	2023-12-20 17:00:15 +01:00
addrconf_core.c	net: rename reference+tracking helpers	2022-06-09 21:52:55 -07:00
addrlabel.c	ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network	2022-11-07 12:26:15 +00:00
af_inet6.c	ipv4, ipv6: Use splice_eof() to flush	2024-01-10 17:10:27 +01:00
ah6.c	xfrm: ah: add extack to ah_init_state, ah6_init_state	2022-09-29 07:17:59 +02:00
anycast.c
calipso.c
datagram.c	ipv6: Fix datagram socket connection with DSCP.	2023-02-22 12:59:54 +01:00
esp6.c	net: ipv6: fix return value check in esp_remove_trailer	2023-10-25 12:03:06 +02:00
esp6_offload.c	xfrm: Linearize the skb after offloading if needed.	2023-06-28 11:12:29 +02:00
exthdrs.c	ipv6: rpl: Fix Route of Death.	2023-06-14 11:15:20 +02:00
exthdrs_core.c	ipv6: Fix out-of-bounds access in ipv6_find_tlv()	2023-05-30 14:03:21 +01:00
exthdrs_offload.c
fib6_notifier.c
fib6_rules.c
fou6.c
icmp.c	icmp6: Fix null-ptr-deref of ip6_null_entry->rt6i_idev in icmp6_dev().	2023-07-23 13:49:23 +02:00
inet6_connection_sock.c
inet6_hashtables.c	tcp: Access &tcp_hashinfo via net.	2022-09-20 10:21:49 -07:00
ioam6.c	genetlink: start to validate reserved header bytes	2022-08-29 12:47:15 +01:00
ioam6_iptunnel.c
ip6_checksum.c
ip6_fib.c	ipv6: fix potential NULL deref in fib6_add()	2023-12-13 18:39:06 +01:00
ip6_flowlabel.c	treewide: use get_random_u32() when possible	2022-10-11 17:42:58 -06:00
ip6_gre.c	net:ipv6: check return value of pskb_trim()	2023-07-27 08:50:45 +02:00
ip6_icmp.c
ip6_input.c	ipv6: ignore dst hint for multipath routes	2023-09-19 12:28:01 +02:00
ip6_offload.c	net-next: skbuff: refactor pskb_pull	2022-09-30 12:31:46 +01:00
ip6_offload.h
ip6_output.c	net: annotate data-races around sk->sk_tsflags	2024-01-10 17:10:23 +01:00
ip6_tunnel.c	ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim()	2024-01-25 15:27:31 -08:00
ip6_udp_tunnel.c
ip6_vti.c	ip6_vti: fix slab-use-after-free in decode_session6	2023-08-23 17:52:32 +02:00
ip6mr.c	ip6mr: Fix skb_under_panic in ip6mr_cache_report()	2023-08-11 12:08:17 +02:00
ipcomp6.c	xfrm: ipcomp: add extack to ipcomp{4,6}_init_state	2022-09-29 07:18:00 +02:00
ipv6_sockglue.c	tcp: Fix data races around icsk->icsk_af_ops.	2022-10-12 17:50:37 -07:00
Kconfig	crypto: lib - make the sha1 library optional	2022-07-15 16:43:59 +08:00
Makefile
mcast.c	treewide: use prandom_u32_max() when possible, part 1	2022-10-11 17:42:55 -06:00
mcast_snoop.c
mip6.c	xfrm: mip6: add extack to mip6_destopt_init_state, mip6_rthdr_init_state	2022-09-29 07:18:01 +02:00
ndisc.c	neighbour: annotate lockless accesses to n->nud_state	2023-10-10 22:00:42 +02:00
netfilter.c	netfilter: Use l3mdev flow key when re-routing mangled packets	2022-05-16 13:03:29 +02:00
output_core.c	treewide: use get_random_u32() when possible	2022-10-11 17:42:58 -06:00
ping.c	net: annotate data-races around sk->sk_tsflags	2024-01-10 17:10:23 +01:00
proc.c
protocol.c
raw.c	net: annotate data-races around sk->sk_tsflags	2024-01-10 17:10:23 +01:00
reassembly.c
route.c	ipv6: remove max_size check inline with ipv4	2024-01-15 18:54:51 +01:00
rpl.c	net: rpl: fix rpl header size calculation	2023-04-26 14:28:34 +02:00
rpl_iptunnel.c
seg6.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-09-08 18:38:30 +02:00
seg6_hmac.c	net: ipv6: unexport __init-annotated seg6_hmac_net_init()	2022-06-28 21:23:30 -07:00
seg6_iptunnel.c	seg6: add support for SRv6 H.L2Encaps.Red behavior	2022-07-29 12:14:03 +01:00
seg6_local.c	seg6: add NEXT-C-SID support for SRv6 End behavior	2022-09-20 12:33:22 +02:00
sit.c	sit: update dev->needed_headroom in ipip6_tunnel_bind_dev()	2023-05-17 11:53:33 +02:00
syncookies.c	dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses.	2023-11-20 11:52:16 +01:00
sysctl_net_ipv6.c	net: sysctl: introduce sysctl SYSCTL_THREE	2022-05-03 10:15:06 +02:00
tcp_ipv6.c	ipv4, ipv6: Use splice_eof() to flush	2024-01-10 17:10:27 +01:00
tcpv6_offload.c
tunnel6.c
udp.c	udp: annotate data-races around up->pending	2024-01-25 15:27:49 -08:00
udp_impl.h	tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().	2022-10-12 17:50:37 -07:00
udp_offload.c
udplite.c	udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated().	2023-05-30 14:03:20 +01:00
xfrm6_input.c	udp: annotate data-races around udp->encap_type	2024-01-10 17:10:28 +01:00
xfrm6_output.c
xfrm6_policy.c	xfrm6: fix inet6_dev refcount underflow problem	2023-10-25 12:03:12 +02:00
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c	xfrm: tunnel: add extack to ipip_init_state, xfrm6_tunnel_init_state	2022-09-29 07:18:00 +02:00