D. Wythe 475f9ff63e net/smc: fix application data exception ... There is a certain probability that following exceptions will occur in the wrk benchmark test: Running 10s test @ http://11.213.45.6:80 8 threads and 64 connections Thread Stats Avg Stdev Max +/- Stdev Latency 3.72ms 13.94ms 245.33ms 94.17% Req/Sec 1.96k 713.67 5.41k 75.16% 155262 requests in 10.10s, 23.10MB read Non-2xx or 3xx responses: 3 We will find that the error is HTTP 400 error, which is a serious exception in our test, which means the application data was corrupted. Consider the following scenarios: CPU0 CPU1 buf_desc->used = 0; cmpxchg(buf_desc->used, 0, 1) deal_with(buf_desc) memset(buf_desc->cpu_addr,0); This will cause the data received by a victim connection to be cleared, thus triggering an HTTP 400 error in the server. This patch exchange the order between clear used and memset, add barrier to ensure memory consistency. Fixes: 1c5526968e ("net/smc: Clear memory when release and reuse buffer") Signed-off-by: D. Wythe <alibuda@linux.alibaba.com> Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2023-02-20 08:09:27 +00:00
..
6lowpan	…
9p	xen: branch for v6.2-rc4	2023-01-12 17:02:20 -06:00
802	treewide: Convert del_timer*() to timer_shutdown*()	2022-12-25 13:38:09 -08:00
8021q	net: Remove the obsolte u64_stats_fetch_*_irq() users (net).	2022-10-28 20:13:54 -07:00
appletalk	…
atm	driver core: make struct class.dev_uevent() take a const *	2022-11-24 17:12:15 +01:00
ax25	ax25: af_ax25: Remove unnecessary (void*) conversions	2022-11-16 13:31:03 +00:00
batman-adv	Networking changes for 6.2.	2022-12-13 15:47:48 -08:00
bluetooth	Bluetooth: Fix possible deadlock in rfcomm_sk_state_change	2023-01-17 15:59:02 -08:00
bpf	New Feature:	2022-12-17 14:06:53 -06:00
bpfilter	…
bridge	netfilter: br_netfilter: disable sabotage_in hook after first suppression	2023-01-31 13:59:36 +01:00
caif	net: Remove WARN_ON_ONCE(sk->sk_forward_alloc) from sk_stream_kill_queues().	2023-02-10 19:53:42 -08:00
can	can: j1939: do not wait 250 ms if the same addr was already claimed	2023-02-07 15:00:22 +01:00
ceph	Treewide: Stop corrupting socket's task_frag	2022-12-19 17:28:49 -08:00
core	devlink: Fix netdev notifier chain corruption	2023-02-16 11:53:47 +01:00
dcb	net: dcb: move getapptrust to separate function	2022-11-15 15:27:43 +01:00
dccp	dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions.	2023-02-10 19:53:42 -08:00
dns_resolver	cred: Do not default to init_cred in prepare_kernel_cred()	2022-11-01 10:04:52 -07:00
dsa	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-12-13 09:49:29 +01:00
ethernet	net: ethernet: use sysfs_emit() to instead of scnprintf()	2022-12-07 20:02:44 -08:00
ethtool	Revert "Merge branch 'ethtool-mac-merge'"	2023-01-24 17:44:14 +01:00
hsr	hsr: Use a single struct for self_node.	2022-12-01 20:26:22 -08:00
ieee802154	Merge tag 'ieee802154-for-net-next-2022-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next	2022-12-07 17:33:26 -08:00
ife	…
ipv4	txhash: fix sk->sk_txrehash default	2023-02-08 09:07:11 +00:00
ipv6	dccp/tcp: Avoid negative sk_forward_alloc by ipv6_pinfo.pktoptions.	2023-02-10 19:53:42 -08:00
iucv	…
kcm	kcm: close race conditions on sk_receive_queue	2022-11-15 12:42:26 +01:00
key	af_key: Fix heap information leak	2023-02-13 09:30:14 +00:00
l2tp	l2tp: prevent lockdep issue in l2tp_tunnel_register()	2023-01-18 14:44:54 +00:00
l3mdev	…
lapb	…
llc	…
mac80211	Revert "wifi: mac80211: fix memory leak in ieee80211_if_add()"	2023-01-16 17:28:52 +02:00
mac802154	mac802154: Fix possible double free upon parsing error	2022-12-19 11:38:12 +01:00
mctp	net: mctp: purge receive queues on sk destruction	2023-01-28 00:26:09 -08:00
mpls	net: mpls: fix stale pointer if allocation fails during device rename	2023-02-15 10:26:37 +00:00
mptcp	mptcp: be careful on subflow status propagation on errors	2023-02-08 09:39:34 +00:00
ncsi	net/ncsi: Silence runtime memcpy() false positive warning	2022-12-06 17:29:14 -08:00
netfilter	Revert "netfilter: conntrack: fix bug in for_each_sctp_chunk"	2023-01-31 14:02:48 +01:00
netlabel	…
netlink	netlink: annotate data races around sk_state	2023-01-23 21:35:53 -08:00
netrom	netrom: Fix use-after-free caused by accept on already connected socket	2023-01-30 07:30:47 +00:00
nfc	net: nfc: Fix use-after-free in local_cleanup()	2023-01-13 20:53:44 -08:00
nsh	…
openvswitch	net: openvswitch: fix possible memory leak in ovs_meter_cmd_set()	2023-02-13 09:38:25 +00:00
packet	Networking changes for 6.2.	2022-12-13 15:47:48 -08:00
phonet	…
psample	…
qrtr	net: qrtr: free memory on error path in radix_tree_insert()	2023-01-28 00:21:32 -08:00
rds	rds: rds_rm_zerocopy_callback() use list_first_entry()	2023-02-09 10:37:26 +01:00
rfkill	driver core: make struct class.dev_uevent() take a const *	2022-11-24 17:12:15 +01:00
rose	net/rose: Fix to not accept on connected socket	2023-01-28 00:19:57 -08:00
rxrpc	rxrpc: Fix wrong error return in rxrpc_connect_call()	2023-01-12 21:51:55 -08:00
sched	net/sched: tcindex: search key must be 16 bits	2023-02-15 10:23:54 +00:00
sctp	sctp: sctp_sock_filter(): avoid list_entry() on possibly empty list	2023-02-10 19:28:29 -08:00
smc	net/smc: fix application data exception	2023-02-20 08:09:27 +00:00
strparser	…
sunrpc	nfsd-6.2 fixes:	2023-01-10 15:03:06 -06:00
switchdev	…
tipc	tipc: fix kernel warning when sending SYN message	2023-02-14 20:46:24 -08:00
tls	net/tls: tls_is_tx_ready() checked list_entry	2023-01-30 21:06:08 -08:00
unix	unix: Fix race in SOCK_SEQPACKET's unix_dgram_sendmsg()	2022-12-15 11:35:18 +01:00
vmw_vsock	Networking changes for 6.2.	2022-12-13 15:47:48 -08:00
wireless	Driver Core changes for 6.2-rc1	2022-12-16 03:54:54 -08:00
x25	net/x25: Fix to not accept on connected socket	2023-01-25 09:51:04 +00:00
xdp	bpf: Expand map key argument of bpf_redirect_map to u64	2022-11-15 09:00:27 -08:00
xfrm	xfrm: fix bug with DSCP copy to v6 from v4 tunnel	2023-01-30 11:31:58 +01:00
Kconfig	…
Kconfig.debug	…
Makefile	…
compat.c	use less confusing names for iov_iter direction initializers	2022-11-25 13:01:55 -05:00
devres.c	…
socket.c	net: use a bounce buffer for copying skb->mark	2023-02-14 20:31:13 -08:00
sysctl_net.c	…