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a2ebedf7bc
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Chuck Lever a2ebedf7bc SUNRPC: Fix a slow server-side memory leak with RPC-over-TCP 
[ Upstream commit 05258a0a69 ]

Jan Schunk reports that his small NFS servers suffer from memory
exhaustion after just a few days. A bisect shows that commit
e18e157bb5 ("SUNRPC: Send RPC message on TCP with a single
sock_sendmsg() call") is the first bad commit.

That commit assumed that sock_sendmsg() releases all the pages in
the underlying bio_vec array, but the reality is that it doesn't.
svc_xprt_release() releases the rqst's response pages, but the
record marker page fragment isn't one of those, so it is never
released.

This is a narrow fix that can be applied to stable kernels. A
more extensive fix is in the works.

Reported-by: Jan Schunk <scpcom@gmx.de>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218671
Fixes: e18e157bb5 ("SUNRPC: Send RPC message on TCP with a single sock_sendmsg() call")
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Jakub Kacinski <kuba@kernel.org>
Cc: David Howells <dhowells@redhat.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-10 16:38:14 +02:00
..
6lowpan net: fill in MODULE_DESCRIPTION()s for 6LoWPAN 2024-02-09 14:12:01 -08:00
9p 9p: Fix read/write debug statements to report server reply 2024-04-10 16:38:09 +02:00
802 net: fill in MODULE_DESCRIPTION()s under net/802* 2023-10-28 11:29:28 +01:00
8021q vlan: skip nested type that is not IFLA_VLAN_QOS_MAPPING 2024-01-19 21:25:06 -08:00
appletalk net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
atm net: fill in MODULE_DESCRIPTION()s for mpoa 2024-02-09 14:12:01 -08:00
ax25 ax25: fix use-after-free bugs caused by ax25_ds_del_timer 2024-04-10 16:38:06 +02:00
batman-adv batman-adv: mcast: fix memory leak on deleting a batman-adv interface 2024-01-27 09:13:39 +01:00
bluetooth Bluetooth: Fix TOCTOU in HCI debugfs implementation 2024-04-10 16:38:02 +02:00
bpf bpf: Fix dtor CFI 2023-12-15 16:25:55 -08:00
bridge netfilter: validate user input for expected length 2024-04-10 16:38:03 +02:00
caif net: fill in MODULE_DESCRIPTION()s for CAIF 2024-01-05 08:06:35 -08:00
can can: j1939: Fix UAF in j1939_sk_match_filter during setsockopt(SO_J1939_FILTER) 2024-02-14 13:53:03 +01:00
ceph libceph: init the cursor when preparing sparse read in msgr2 2024-03-06 12:43:01 +01:00
core gro: fix ownership transfer 2024-04-10 16:38:05 +02:00
dcb
dccp net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
devlink devlink: fix port new reply cmd type 2024-03-26 18:17:36 -04:00
dns_resolver Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
dsa net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events 2024-01-11 16:33:52 -08:00
ethernet
ethtool ethtool: netlink: Add missing ethnl_ops_begin/complete 2024-01-18 13:21:06 +01:00
handshake net/handshake: Fix handshake_req_destroy_test1 2024-02-08 18:32:29 -08:00
hsr net: hsr: hsr_slave: Fix the promiscuous mode in offload mode 2024-04-10 16:37:56 +02:00
ieee802154 mac802154: Avoid new associations while disassociating 2023-12-15 11:14:57 +01:00
ife net: sched: ife: fix potential use-after-free 2023-12-15 10:50:18 +00:00
ipv4 udp: prevent local UDP tunnel packets from being GROed 2024-04-10 16:38:07 +02:00
ipv6 udp: do not transition UDP GRO fraglist partial checksums to unnecessary 2024-04-10 16:38:07 +02:00
iucv net/iucv: fix the allocation size of iucv_path_table array 2024-02-16 09:25:09 +00:00
kcm net: kcm: fix incorrect parameter validation in the kcm_getsockopt) function 2024-03-26 18:16:57 -04:00
key net: fill in MODULE_DESCRIPTION()s for af_key 2024-02-09 14:12:01 -08:00
l2tp l2tp: fix incorrect parameter validation in the pppol2tp_getsockopt() function 2024-03-26 18:16:57 -04:00
l3mdev
lapb
llc llc: call sock_orphan() at release time 2024-01-30 13:49:09 +01:00
mac80211 wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes 2024-04-03 15:32:38 +02:00
mac802154 mac802154: fix llsec key resources release in mac802154_llsec_key_del 2024-04-03 15:32:15 +02:00
mctp net: mctp: copy skb ext data when fragmenting 2024-03-26 18:16:49 -04:00
mpls
mptcp mptcp: don't account accept() of non-MPC client as fallback to TCP 2024-04-10 16:38:09 +02:00
ncsi net/ncsi: Add NC-SI 1.2 Get MC MAC Address command 2023-11-18 15:00:51 +00:00
netfilter netfilter: nf_tables: discard table flag update with pending basechain deletion 2024-04-10 16:38:03 +02:00
netlabel calipso: fix memory leak in netlbl_calipso_add_pass() 2023-12-07 14:23:12 -05:00
netlink netlink: Fix kernel-infoleak-after-free in __skb_datagram_iter 2024-02-22 18:56:09 -08:00
netrom netrom: Fix data-races around sysctl_net_busy_read 2024-03-07 10:36:58 +01:00
nfc nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet 2024-04-10 16:37:54 +02:00
nsh
openvswitch net: openvswitch: limit the number of recursions from action sets 2024-02-09 12:54:38 -08:00
packet packet: annotate data-races around ignore_outgoing 2024-03-26 18:17:34 -04:00
phonet phonet/pep: fix racy skb_queue_empty() use 2024-02-22 09:05:50 +01:00
psample genetlink: Use internal flags for multicast groups 2023-12-29 08:43:59 +00:00
qrtr net: qrtr: ns: Return 0 if server port is not present 2024-01-01 18:41:29 +00:00
rds net/rds: fix possible cp null dereference 2024-04-10 16:38:02 +02:00
rfkill Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-12-21 22:17:23 +01:00
rose net/rose: fix races in rose_kill_by_device() 2023-12-15 11:59:53 +00:00
rxrpc rxrpc: Fix counting of new acks and nacks 2024-02-05 12:34:07 +00:00
sched net/sched: fix lockdep splat in qdisc_tree_reduce_backlog() 2024-04-10 16:38:04 +02:00
sctp net: sctp: fix skb leak in sctp_inq_free() 2024-02-15 07:34:52 -08:00
smc net: smc: fix spurious error message from __sock_release() 2024-02-14 10:56:02 +00:00
strparser
sunrpc SUNRPC: Fix a slow server-side memory leak with RPC-over-TCP 2024-04-10 16:38:14 +02:00
switchdev net: bridge: switchdev: Skip MDB replays of deferred events on offload 2024-02-16 09:36:37 +00:00
tipc tipc: Check the bearer type before calling tipc_udp_nl_bearer_add() 2024-02-06 08:49:26 +01:00
tls tls: get psock ref after taking rxlock to avoid leak 2024-04-10 16:37:57 +02:00
unix af_unix: Annotate data-race of gc_in_progress in wait_for_unix_gc(). 2024-03-26 18:16:34 -04:00
vmw_vsock vsock/virtio: fix packet delivery to tap device 2024-04-10 16:38:03 +02:00
wireless wifi: cfg80211: add a flag to disable wireless extensions 2024-04-03 15:32:38 +02:00
x25 net/x25: fix incorrect parameter validation in the x25_getsockopt() function 2024-03-26 18:16:57 -04:00
xdp xsk: Add truesize to skb_add_rx_frag(). 2024-02-13 23:10:29 +01:00
xfrm xfrm: Allow UDP encapsulation only in offload modes 2024-03-26 18:17:34 -04:00
compat.c file: stop exposing receive_fd_user() 2023-12-12 14:24:14 +01:00
devres.c
Kconfig bpfilter: remove bpfilter 2024-01-04 10:23:10 -08:00
Kconfig.debug
Makefile bpfilter: remove bpfilter 2024-01-04 10:23:10 -08:00
socket.c vfs-6.8.iov_iter 2024-01-08 11:43:04 -08:00
sysctl_net.c