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6d2243ab78
android_kernel_xiaomi_sm8450/net
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Chengfeng Ye 6d2243ab78 sctp: fix potential deadlock on &net->sctp.addr_wq_lock 
[ Upstream commit 6feb37b3b06e9049e20dcf7e23998f92c9c5be9a ]

As &net->sctp.addr_wq_lock is also acquired by the timer
sctp_addr_wq_timeout_handler() in protocal.c, the same lock acquisition
at sctp_auto_asconf_init() seems should disable irq since it is called
from sctp_accept() under process context.

Possible deadlock scenario:
sctp_accept()
    -> sctp_sock_migrate()
    -> sctp_auto_asconf_init()
    -> spin_lock(&net->sctp.addr_wq_lock)
        <timer interrupt>
        -> sctp_addr_wq_timeout_handler()
        -> spin_lock_bh(&net->sctp.addr_wq_lock); (deadlock here)

This flaw was found using an experimental static analysis tool we are
developing for irq-related deadlock.

The tentative patch fix the potential deadlock by spin_lock_bh().

Signed-off-by: Chengfeng Ye <dg573847474@gmail.com>
Fixes: 34e5b0118685 ("sctp: delay auto_asconf init until binding the first addr")
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/20230627120340.19432-1-dg573847474@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-07-27 08:44:08 +02:00
..
6lowpan 6lowpan: iphc: Fix an off-by-one check of array index 2021-09-15 09:50:34 +02:00
9p 9p/xen : Fix use after free bug in xen_9pfs_front_remove due to race condition 2023-04-20 12:10:25 +02:00
802 mrp: introduce active flags to prevent UAF when applicant uninit 2023-01-14 10:16:18 +01:00
8021q vlan: fix a potential uninit-value in vlan_dev_hard_start_xmit() 2023-05-30 12:57:53 +01:00
appletalk appletalk: Fix skb allocation size in loopback case 2021-04-07 15:00:08 +02:00
atm atm: hide unused procfs functions 2023-06-09 10:30:12 +02:00
ax25 net: ax25: Fix deadlock caused by skb_recv_datagram in ax25_recvmsg 2022-06-22 14:13:17 +02:00
batman-adv batman-adv: Switch to kstrtox.h for kstrtou64 2023-06-21 15:45:40 +02:00
bluetooth Bluetooth: Fix use-after-free in hci_remove_ltk/hci_remove_irk 2023-06-14 11:09:52 +02:00
bpf bpf: Move skb->len == 0 checks into __bpf_redirect 2023-01-14 10:15:31 +01:00
bpfilter bpfilter: Specify the log level for the kmsg message 2021-07-14 16:56:29 +02:00
bridge bridge: always declare tunnel functions 2023-05-30 12:57:53 +01:00
caif net: caif: Fix use-after-free in cfusbl_device_notify() 2023-03-17 08:45:11 +01:00
can can: isotp: isotp_sendmsg(): fix return error fix on TX path 2023-07-27 08:43:30 +02:00
ceph libceph: fix potential use-after-free on linger ping and resends 2022-05-25 09:17:56 +02:00
core netlink: Add __sock_i_ino() for __netlink_diag_dump(). 2023-07-27 08:43:43 +02:00
dcb net: dcb: disable softirqs in dcbnl_flush_dev() 2022-03-08 19:09:37 +01:00
dccp dccp: Call inet6_destroy_sock() via sk->sk_destruct(). 2023-04-26 11:27:42 +02:00
decnet Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
dns_resolver docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
dsa net: dsa: ksz: Check return value 2022-12-14 11:32:01 +01:00
ethernet net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
ethtool net/ethtool/ioctl: return -EOPNOTSUPP if we have no phy stats 2023-01-24 07:19:55 +01:00
hsr hsr: ratelimit only when errors are printed 2023-04-05 11:23:52 +02:00
ieee802154 net: ieee802154: fix error return code in dgram_bind() 2022-11-03 23:57:51 +09:00
ife net: Fix Kconfig indentation 2019-09-26 08:56:17 +02:00
ipv4 bpf: Remove extra lock_sock for TCP_ZEROCOPY_RECEIVE 2023-07-27 08:43:37 +02:00
ipv6 bpf: Remove extra lock_sock for TCP_ZEROCOPY_RECEIVE 2023-07-27 08:43:37 +02:00
iucv net/iucv: Fix size of interrupt data 2023-03-22 13:30:00 +01:00
kcm kcm: close race conditions on sk_receive_queue 2022-11-25 17:45:56 +01:00
key af_key: Reject optional tunnel/BEET mode templates in outbound policies 2023-05-30 12:57:51 +01:00
l2tp inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy(). 2023-04-26 11:27:41 +02:00
l3mdev l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu 2022-04-27 13:53:50 +02:00
lapb net: lapb: Copy the skb before sending a packet 2021-02-10 09:29:14 +01:00
llc net: deal with most data-races in sk_wait_event() 2023-05-30 12:57:46 +01:00
mac80211 wifi: mac80211: fix min center freq offset tracing 2023-05-30 12:57:53 +01:00
mac802154 mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() 2022-12-14 11:32:01 +01:00
mpls net: mpls: fix stale pointer if allocation fails during device rename 2023-02-22 12:55:58 +01:00
mptcp inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy(). 2023-04-26 11:27:41 +02:00
ncsi net/ncsi: clear Tx enable mode when handling a Config required AEN 2023-05-17 11:48:10 +02:00
netfilter netfilter: nf_conntrack_sip: fix the ct_sip_parse_numerical_param() return value. 2023-07-27 08:43:43 +02:00
netlabel netlabel: fix out-of-bounds memory accesses 2022-04-13 21:01:00 +02:00
netlink netlink: Add __sock_i_ino() for __netlink_diag_dump(). 2023-07-27 08:43:43 +02:00
netrom netrom: fix info-leak in nr_write_internal() 2023-06-09 10:30:05 +02:00
nfc net: nfc: Fix use-after-free caused by nfc_llcp_find_local 2023-07-27 08:43:43 +02:00
nsh net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment() 2023-05-30 12:57:52 +01:00
openvswitch net: openvswitch: fix possible memory leak in ovs_meter_cmd_set() 2023-02-22 12:55:57 +01:00
packet af_packet: do not use READ_ONCE() in packet_bind() 2023-06-09 10:30:05 +02:00
phonet phonet: refcount leak in pep_sock_accep 2022-01-11 15:25:01 +01:00
psample net: psample: Fix netlink skb length with tunnel info 2021-03-07 12:34:07 +01:00
qrtr net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume() 2023-04-20 12:10:26 +02:00
rds rds: rds_rm_zerocopy_callback() correct order for list_add_tail() 2023-03-11 16:39:26 +01:00
rfkill rfkill: Fix use-after-free in rfkill_resume() 2020-11-12 09:18:06 +01:00
rose net/rose: Fix to not accept on connected socket 2023-02-22 12:55:53 +01:00
rxrpc rxrpc: Fix hard call timeout units 2023-05-17 11:48:11 +02:00
sched sch_netem: acquire qdisc lock in netem_change() 2023-06-28 10:28:13 +02:00
sctp sctp: fix potential deadlock on &net->sctp.addr_wq_lock 2023-07-27 08:44:08 +02:00
smc net/smc: Avoid to access invalid RMBs' MRs in SMCRv1 ADD LINK CONT 2023-06-14 11:09:39 +02:00
strparser bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding 2021-11-18 14:04:27 +01:00
sunrpc SUNRPC: Fix UAF in svc_tcp_listen_data_ready() 2023-07-27 08:44:02 +02:00
switchdev net: switchdev: don't set port_obj_info->handled true when -EOPNOTSUPP 2021-02-07 15:37:12 +01:00
tipc net: tipc: resize nlattr array to correct size 2023-06-21 15:45:40 +02:00
tls net: deal with most data-races in sk_wait_event() 2023-05-30 12:57:46 +01:00
unix af_unix: Fix data races around sk->sk_shutdown. 2023-05-30 12:57:46 +01:00
vmw_vsock vsock: avoid to close connected socket after the timeout 2023-05-30 12:57:52 +01:00
wimax genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
wireless wifi: cfg80211: rewrite merging of inherited elements 2023-07-27 08:43:41 +02:00
x25 net/x25: Fix to not accept on connected socket 2023-02-15 17:22:15 +01:00
xdp xsk: Fix unaligned descriptor validation 2023-05-17 11:47:50 +02:00
xfrm xfrm: Ensure policies always checked on XFRM-I input path 2023-06-28 10:28:10 +02:00
compat.c net: Return the correct errno code 2021-06-18 10:00:06 +02:00
devres.c net: devres: rename the release callback of devm_register_netdev() 2020-06-30 15:57:34 -07:00
Kconfig Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
socket.c bpf: Remove extra lock_sock for TCP_ZEROCOPY_RECEIVE 2023-07-27 08:43:37 +02:00
sysctl_net.c