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Jakub Kicinski b93235e689 tls: cap the output scatter list to something reasonable 
TLS recvmsg() passes user pages as destination for decrypt.
The decrypt operation is repeated record by record, each
record being 16kB, max. TLS allocates an sg_table and uses
iov_iter_get_pages() to populate it with enough pages to
fit the decrypted record.

Even though we decrypt a single message at a time we size
the sg_table based on the entire length of the iovec.
This leads to unnecessarily large allocations, risking
triggering OOM conditions.

Use iov_iter_truncate() / iov_iter_reexpand() to construct
a "capped" version of iov_iter_npages(). Alternatively we
could parametrize iov_iter_npages() to take the size as
arg instead of using i->count, or do something else..

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2022-02-04 10:14:07 +00:00
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6lowpan
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9p virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
802
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8021q
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appletalk
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atm proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-02-03 17:36:16 -08:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-01-05 14:36:10 -08:00
bluetooth bluetooth-next pull request for net-next: 2022-01-28 13:39:07 -08:00
bpf bpf: Fix flexible_array.cocci warnings 2022-01-24 17:11:39 +01:00
bpfilter
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bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2022-01-27 18:53:02 -08:00
caif Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-12-31 14:35:40 +00:00
can proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
ceph The highlight is the new mount "device" string syntax implemented 2022-01-20 13:46:20 +02:00
core net: minor __dev_alloc_name() optimization 2022-02-03 19:11:14 -08:00
dcb
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dccp dccp: remove max48() 2022-01-27 13:53:27 +00:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-12-31 14:35:40 +00:00
dns_resolver
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dsa net: dsa: tag_qca: add support for handling mgmt and MIB Ethernet packet 2022-02-02 14:43:59 +00:00
ethernet
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ethtool ethtool: add header/data split indication 2022-01-28 14:43:47 +00:00
hsr hsr: remove get_prp_lan_id() 2022-01-27 13:53:27 +00:00
ieee802154 net: ieee802154: Return meaningful error codes from the netlink helpers 2022-01-27 08:20:47 +01:00
ife
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ipv4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-02-03 17:36:16 -08:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-02-03 17:36:16 -08:00
iucv
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kcm
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key
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l2tp
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l3mdev
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lapb
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llc
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mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-01-05 14:36:10 -08:00
mac802154
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mctp mctp: test: zero out sockaddr 2022-01-11 20:26:36 -08:00
mpls
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mptcp mptcp: set fullmesh flag in pm_netlink 2022-02-03 11:44:08 +00:00
ncsi all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate 2022-01-15 08:47:31 -08:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-02-03 17:36:16 -08:00
netlabel
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netlink
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netrom netrom: fix api breakage in nr_setsockopt() 2022-01-07 14:11:05 +00:00
nfc Networking fixes for 5.17-rc1, including fixes from netfilter, bpf. 2022-01-20 10:57:05 +02:00
nsh
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openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-01-09 17:00:17 -08:00
packet af_packet: fix data-race in packet_setsockopt / packet_setsockopt 2022-02-01 20:21:10 -08:00
phonet
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psample
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qrtr
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rds
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rfkill
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rose
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rxrpc rxrpc: Adjust retransmission backoff 2022-01-22 02:03:24 +00:00
sched net: sched: fix use-after-free in tc_new_tfilter() 2022-02-01 20:15:58 -08:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-01-05 14:36:10 -08:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-02-03 17:36:16 -08:00
strparser
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sunrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-02-03 17:36:16 -08:00
switchdev
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tipc net: tipc: remove unused static inlines 2022-01-27 13:53:27 +00:00
tls tls: cap the output scatter list to something reasonable 2022-02-04 10:14:07 +00:00
unix Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-01-24 15:42:29 -08:00
vmw_vsock virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
wireless Kbuild updates for v5.17 2022-01-19 11:15:19 +02:00
x25
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xdp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-01-05 14:36:10 -08:00
xfrm xfrm: Don't accidentally set RTO_ONLINK in decode_session4() 2022-01-11 20:36:08 -08:00
Kconfig
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Kconfig.debug
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Makefile
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compat.c
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devres.c
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socket.c net: fix SOF_TIMESTAMPING_BIND_PHC to work with multiple sockets 2022-01-06 12:18:08 +00:00
sysctl_net.c
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