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8f3d65c166
linux/net
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Karsten Graul 8f3d65c166 net/smc: fix wait on already cleared link 
There can be a race between the waiters for a tx work request buffer
and the link down processing that finally clears the link. Although
all waiters are woken up before the link is cleared there might be
waiters which did not yet get back control and are still waiting.
This results in an access to a cleared wait queue head.

Fix this by introducing atomic reference counting around the wait calls,
and wait with the link clear processing until all waiters have finished.
Move the work request layer related calls into smc_wr.c and set the
link state to INACTIVE before calling smcr_link_clear() in
smc_llc_srv_add_link().

Fixes: 15e1b99aad ("net/smc: no WR buffer wait for terminating link group")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-09 10:46:59 +01:00
..
6lowpan
9p
802 net/802/garp: fix memleak in garp_request_join() 2021-07-01 11:21:57 -07:00
8021q
appletalk
atm
ax25
batman-adv
bluetooth Bluetooth: defer cleanup of resources in hci_unregister_dev() 2021-08-05 12:15:24 -07:00
bpf bpf, test: fix NULL pointer dereference on invalid expected_attach_type 2021-07-12 17:13:08 +02:00
bpfilter bpfilter: Specify the log level for the kmsg message 2021-06-25 13:13:50 +02:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2021-08-06 08:44:50 -07:00
caif net: fix uninit-value in caif_seqpkt_sendmsg 2021-07-15 11:08:33 -07:00
can can: j1939: j1939_xtp_rx_dat_one(): fix rxtimer value between consecutive TP.DT to 750ms 2021-07-24 19:02:24 +02:00
ceph Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
core page_pool: mask the page->signature before the checking 2021-08-09 10:03:02 +01:00
dcb
dccp dccp: add do-while-0 stubs for dccp_pr_debug macros 2021-08-09 10:00:02 +01:00
decnet net: decnet: Fix sleeping inside in af_decnet 2021-07-16 14:06:16 -07:00
dns_resolver
dsa net: dsa: tag_ksz: dont let the hardware process the layer 4 checksum 2021-07-21 23:14:49 -07:00
ethernet
ethtool net: sock: extend SO_TIMESTAMPING for PHC binding 2021-07-01 13:08:18 -07:00
hsr
ieee802154
ife
ipv4 net, gro: Set inner transport header offset in tcp/udp GRO hook 2021-08-02 10:20:56 +01:00
ipv6 ipv6: decrease hop limit counter in ip6_forward() 2021-07-23 16:40:41 +01:00
iucv s390: iucv: Avoid field over-reading memcpy() 2021-07-01 15:54:01 -07:00
kcm net: sock: introduce sk_error_report 2021-06-29 11:28:21 -07:00
key
l2tp
l3mdev
lapb
llc net: llc: fix skb_over_panic 2021-07-27 13:05:56 +01:00
mac80211 mac80211: fix enabling 4-address mode on a sta vif after assoc 2021-07-23 10:34:13 +02:00
mac802154
mpls
mptcp mptcp: drop unused rcu member in mptcp_pm_addr_entry 2021-08-03 14:26:46 -07:00
ncsi net/ncsi: add dummy response handler for Intel boards 2021-07-08 14:16:39 -07:00
netfilter netfilter: nfnetlink_hook: translate inet ingress to netdev 2021-08-06 17:07:41 +02:00
netlabel
netlink net: Use nlmsg_unicast() instead of netlink_unicast() 2021-07-13 09:28:29 -07:00
netrom netrom: Decrease sock refcount when sock timers expire 2021-07-18 09:48:59 -07:00
nfc TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
nsh
openvswitch openvswitch: Optimize operation for key comparison 2021-07-01 11:13:10 -07:00
packet Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
phonet
psample
qrtr net: really fix the build... 2021-08-03 11:14:03 +01:00
rds Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
rfkill
rose
rxrpc Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
sched net: sched: fix lockdep_set_class() typo error for sch->seqlock 2021-08-04 09:59:24 +01:00
sctp sctp: move the active_key update after sh_keys is added 2021-08-03 11:43:43 +01:00
smc net/smc: fix wait on already cleared link 2021-08-09 10:46:59 +01:00
strparser net: sock: introduce sk_error_report 2021-06-29 11:28:21 -07:00
sunrpc NFS client updates for Linux 5.14 2021-07-09 09:43:57 -07:00
switchdev net: switchdev: add a context void pointer to struct switchdev_notifier_info 2021-06-28 14:09:03 -07:00
tipc tipc: do not write skb_shinfo frags when doing decrytion 2021-07-24 19:38:21 +01:00
tls Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-06-29 15:45:27 -07:00
unix af_unix: fix garbage collect vs MSG_PEEK 2021-07-28 10:18:00 -07:00
vmw_vsock VSOCK: handle VIRTIO_VSOCK_OP_CREDIT_REQUEST 2021-08-03 14:30:59 -07:00
wireless cfg80211: Fix possible memory leak in function cfg80211_bss_update 2021-07-23 10:38:18 +02:00
x25
xdp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-06-29 15:45:27 -07:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2021-08-04 10:45:41 +01:00
compat.c
devres.c
Kconfig
Makefile
socket.c net: socket: support hardware timestamp conversion to PHC bound 2021-07-01 13:08:18 -07:00
sysctl_net.c