linux_dsm_epyc7002/net
Hoang Le 60b8b4e631 tipc: fix NULL deref in tipc_link_xmit()
[ Upstream commit b77413446408fdd256599daf00d5be72b5f3e7c6 ]

The buffer list can have zero skb as following path:
tipc_named_node_up()->tipc_node_xmit()->tipc_link_xmit(), so
we need to check the list before casting an &sk_buff.

Fault report:
 [] tipc: Bulk publication failure
 [] general protection fault, probably for non-canonical [#1] PREEMPT [...]
 [] KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
 [] CPU: 0 PID: 0 Comm: swapper/0 Kdump: loaded Not tainted 5.10.0-rc4+ #2
 [] Hardware name: Bochs ..., BIOS Bochs 01/01/2011
 [] RIP: 0010:tipc_link_xmit+0xc1/0x2180
 [] Code: 24 b8 00 00 00 00 4d 39 ec 4c 0f 44 e8 e8 d7 0a 10 f9 48 [...]
 [] RSP: 0018:ffffc90000006ea0 EFLAGS: 00010202
 [] RAX: dffffc0000000000 RBX: ffff8880224da000 RCX: 1ffff11003d3cc0d
 [] RDX: 0000000000000019 RSI: ffffffff886007b9 RDI: 00000000000000c8
 [] RBP: ffffc90000007018 R08: 0000000000000001 R09: fffff52000000ded
 [] R10: 0000000000000003 R11: fffff52000000dec R12: ffffc90000007148
 [] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90000007018
 [] FS:  0000000000000000(0000) GS:ffff888037400000(0000) knlGS:000[...]
 [] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 [] CR2: 00007fffd2db5000 CR3: 000000002b08f000 CR4: 00000000000006f0

Fixes: af9b028e27 ("tipc: make media xmit call outside node spinlock context")
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20210108071337.3598-1-hoang.h.le@dektech.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-23 16:04:00 +01:00
..
6lowpan
9p net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid 2020-10-12 10:05:47 +02:00
802
8021q net: vlan: avoid leaks on register_vlan_dev() failures 2021-01-17 14:16:55 +01:00
appletalk
atm net: atm: fix update of position index in lec_seq_next 2020-10-31 12:26:30 -07:00
ax25
batman-adv batman-adv: Don't always reallocate the fragmentation skb head 2020-11-27 08:02:55 +01:00
bluetooth Bluetooth: Fix attempting to set RPA timeout when unsupported 2021-01-09 13:46:23 +01:00
bpf bpf: fix raw_tp test run in preempt kernel 2020-09-30 08:34:08 -07:00
bpfilter Revert "bpfilter: Fix build error with CONFIG_BPFILTER_UMH" 2020-10-15 12:33:24 -07:00
bridge bridge: Fix a deadlock when enabling multicast snooping 2020-12-07 17:14:43 -08:00
caif
can can: isotp: isotp_getname(): fix kernel information leak 2021-01-17 14:17:05 +01:00
ceph libceph: clear con->out_msg on Policy::stateful_server faults 2020-10-12 15:29:27 +02:00
core udp: Prevent reuseport_select_sock from reading uninitialized socks 2021-01-23 16:03:59 +01:00
dcb
dccp tcp: fix race condition when creating child sockets from syncookies 2020-11-23 16:32:33 -08:00
decnet
dns_resolver
dsa net: dsa: tag_ksz: KSZ8795 and KSZ9477 also use tail tags 2020-10-19 17:32:50 -07:00
ethernet
ethtool ethtool: fix string set id check 2021-01-06 14:56:48 +01:00
hsr genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
ieee802154 genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
ife
ipv4 nexthop: Bounce NHA_GATEWAY in FDB nexthop groups 2021-01-17 14:16:57 +01:00
ipv6 net: ipv6: Validate GSO SKB before finish IPv6 processing 2021-01-23 16:04:00 +01:00
iucv net/af_iucv: set correct sk_protocol for child sockets 2020-11-21 14:43:45 -08:00
kcm
key
l2tp genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
l3mdev
lapb
llc
mac80211 mac80211: fix a mistake check for rx_stats update 2020-12-30 11:53:50 +01:00
mac802154
mpls mpls: load mpls_gso after mpls_iptunnel 2020-10-20 21:16:45 -07:00
mptcp mptcp: fix security context on server socket 2021-01-06 14:56:48 +01:00
ncsi net/ncsi: Use real net-device for response handler 2021-01-12 20:18:10 +01:00
netfilter netfilter: nf_nat: Fix memleak in nf_nat_init 2021-01-19 18:27:33 +01:00
netlabel netlabel: fix an uninitialized warning in netlbl_unlabel_staticlist() 2020-11-14 12:07:57 -08:00
netlink netlink: export policy in extended ACK 2020-10-09 20:22:32 -07:00
netrom
nfc nfc: Ensure presence of NFC_ATTR_FIRMWARE_NAME attribute in nfc_genl_fw_download() 2020-10-20 17:06:22 -07:00
nsh
openvswitch openvswitch: fix error return code in validate_and_copy_dec_ttl() 2020-12-04 15:43:14 -08:00
packet net/packet: fix packet receive on L3 devices without visible hard header 2020-11-23 17:29:36 -08:00
phonet
psample genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
qrtr net: qrtr: ns: Fix the incorrect usage of rcu_read_lock() 2020-10-06 06:01:35 -07:00
rds RDMA: Add rdma_connect_locked() 2020-10-28 09:14:49 -03:00
rfkill rfkill: Fix use-after-free in rfkill_resume() 2020-11-12 09:18:06 +01:00
rose rose: Fix Null pointer dereference in rose_send_frame() 2020-11-20 10:04:58 -08:00
rxrpc rxrpc: Fix loss of final ack on shutdown 2020-10-15 13:28:00 +01:00
sched net: sched: prevent invalid Scell_log shift count 2021-01-12 20:18:12 +01:00
sctp sctp: change to hold/put transport for proto_unreach_timer 2020-11-14 11:57:12 -08:00
smc net/smc: fix direct access to ib_gid_addr->ndev in smc_ib_determine_gid() 2020-11-19 10:59:19 -08:00
strparser
sunrpc net: sunrpc: interpret the return value of kstrtou32 correctly 2021-01-19 18:27:33 +01:00
switchdev net: switchdev: Fixed kerneldoc warning 2020-09-23 17:46:31 -07:00
tipc tipc: fix NULL deref in tipc_link_xmit() 2021-01-23 16:04:00 +01:00
tls net/tls: Protect from calling tls_dev_del for TLS RX twice 2020-11-25 17:31:06 -08:00
unix networking changes for the 5.10 merge window 2020-10-15 18:42:13 -07:00
vmw_vsock vsock/virtio: discard packets only when socket is really closed 2020-11-23 16:36:29 -08:00
wimax genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
wireless cfg80211: select CONFIG_CRC32 2021-01-19 18:27:28 +01:00
x25 net/x25: prevent a couple of overflows 2020-12-02 17:26:36 -08:00
xdp xsk: Rollback reservation at NETDEV_TX_BUSY 2021-01-17 14:17:05 +01:00
xfrm net: xfrm: fix memory leak in xfrm_user_policy() 2020-11-10 09:14:25 +01:00
compat.c iov_iter: transparently handle compat iovecs in import_iovec 2020-10-03 00:02:13 -04:00
devres.c
Kconfig drop_monitor: Convert to using devlink tracepoint 2020-09-30 18:01:26 -07:00
Makefile
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
sysctl_net.c