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Alexander Duyck 7f077afe94 net: Do not allow negative values for busy_read and busy_poll sysctl interfaces 
[ Upstream commit 95f2552113 ]

This change basically codifies what I think was already the limitations on
the busy_poll and busy_read sysctl interfaces.  We weren't checking the
lower bounds and as such could input negative values. The behavior when
that was used was dependent on the architecture. In order to prevent any
issues with that I am just disabling support for values less than 0 since
this way we don't have to worry about any odd behaviors.

By limiting the sysctl values this way it also makes it consistent with how
we handle the SO_BUSY_POLL socket option since the value appears to be
reported as a signed integer value and negative values are rejected.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-12-25 14:23:41 +01:00
..
6lowpan 6lowpan: ndisc: no overreact if no short address is available 2016-09-19 20:19:34 +02:00
9p net/9p: Switch to wait_event_killable() 2017-11-30 08:39:09 +00:00
802 net: Kill dev_rebuild_header 2015-03-02 16:43:41 -05:00
8021q vlan: fix a use-after-free in vlan_device_event() 2017-11-24 08:33:41 +01:00
appletalk appletalk: use IS_ENABLED() instead of checking for built-in or module 2016-09-10 21:19:10 -07:00
atm lec: use IS_ENABLED() instead of checking for built-in or module 2016-09-10 21:19:10 -07:00
ax25 ax25: Fix segfault after sock connection timeout 2017-02-04 09:47:09 +01:00
batman-adv batman-adv: Check for alloc errors when preparing TT local data 2016-12-02 10:46:59 +01:00
bluetooth Bluetooth: Properly check L2CAP config option output buffer length 2017-09-13 14:13:36 -07:00
bridge netfilter: bridge: honor frag_max_size when refragmenting 2017-12-20 10:07:20 +01:00
caif net: caif: Fix a sleep-in-atomic bug in cfpkt_create_pfx 2017-07-05 14:40:14 +02:00
can can: Fix kernel panic at security_sock_rcv_skb 2017-02-18 15:11:40 +01:00
ceph libceph: don't WARN() if user tries to add invalid key 2017-11-30 08:39:03 +00:00
core net: Do not allow negative values for busy_read and busy_poll sysctl interfaces 2017-12-25 14:23:41 +01:00
dcb net: dcb: set error code on failures 2016-12-03 23:54:25 -05:00
dccp tcp/dccp: block bh before arming time_wait timer 2017-12-16 16:25:46 +01:00
decnet decnet: always not take dst->__refcnt when inserting dst into hash table 2017-07-05 14:40:16 +02:00
dns_resolver KEYS: Fix race between updating and finding a negative key 2017-10-27 10:38:11 +02:00
dsa net: dsa: select NET_SWITCHDEV 2017-11-15 15:53:17 +01:00
ethernet net: introduce device min_header_len 2017-02-18 15:11:43 +01:00
hsr net/hsr: Remove unused but set variable 2016-10-18 10:28:18 -04:00
ieee802154 Revert "net: fix percpu memory leaks" 2017-09-20 08:19:55 +02:00
ipv4 inet: frag: release spinlock before calling icmp_send() 2017-12-25 14:23:39 +01:00
ipv6 sit: update frag_off info 2017-12-16 16:25:45 +01:00
ipx ipx: call ipxitf_put() in ioctl error path 2017-05-25 15:44:41 +02:00
irda irda: do not leak initialized list.dev to userspace 2017-08-30 10:21:42 +02:00
iucv net/af_iucv: don't use paged skbs for TX on HiperSockets 2017-01-19 20:18:04 +01:00
kcm fix kcm_clone() 2017-12-16 16:25:47 +01:00
key af_key: do not use GFP_KERNEL in atomic contexts 2017-08-30 10:21:38 +02:00
l2tp l2tp: cleanup l2tp_tunnel_delete calls 2017-12-20 10:07:31 +01:00
l3mdev net: ipv6: Remove l3mdev_get_saddr6 2016-09-10 23:12:53 -07:00
lapb net/lapb: tuse %*ph to dump buffers 2016-05-29 22:33:25 -07:00
llc net/llc: avoid BUG_ON() in skb_orphan() 2017-02-26 11:10:50 +01:00
mac80211 mac80211: Fix addition of mesh configuration element 2017-12-20 10:07:17 +01:00
mac802154 mac802154: use rate limited warnings for malformed frames 2016-09-19 20:19:34 +02:00
mpls net: mpls: Fix nexthop alive tracking on down events 2017-12-20 10:07:25 +01:00
ncsi net/ncsi: Improve HNCDSC AEN handler 2016-10-20 11:23:08 -04:00
netfilter netfilter: nfnl_cthelper: Fix memory leak 2017-12-25 14:23:38 +01:00
netlabel netlabel: Implement CALIPSO config functions for SMACK. 2016-06-27 15:06:18 -04:00
netlink crypto: deadlock between crypto_alg_sem/rtnl_mutex/genl_mutex 2017-12-25 14:23:37 +01:00
netrom netfilter: Remove spurios included of netfilter.h 2015-06-18 21:14:32 +02:00
nfc NFC: fix device-allocation error return 2017-11-30 08:39:07 +00:00
openvswitch openvswitch: fix skb_panic due to the incorrect actions attrlen 2017-08-30 10:21:40 +02:00
packet net/packet: fix a race in packet_bind() and packet_notifier() 2017-12-16 16:25:45 +01:00
phonet sock: struct proto hash function may error 2016-02-11 03:54:14 -05:00
qrtr net: qrtr: Mark 'buf' as little endian 2017-12-09 22:01:51 +01:00
rds rds: Fix NULL pointer dereference in __rds_rdma_map 2017-12-16 16:25:45 +01:00
rfkill rfkill: Use switch to demux userspace operations 2016-04-05 10:48:53 +02:00
rose rose: limit sk_filter trim to payload 2016-07-13 11:53:40 -07:00
rxrpc rxrpc: Ignore BUSY packets on old calls 2017-12-20 10:07:25 +01:00
sched sch_dsmark: fix invalid skb_cow() usage 2017-12-25 14:23:38 +01:00
sctp sctp: out_qlen should be updated when pruning unsent queue 2017-12-25 14:23:38 +01:00
strparser strparser: destroy workqueue on module exit 2017-03-22 12:43:33 +01:00
sunrpc sunrpc: Fix rpc_task_begin trace point 2017-12-14 09:28:23 +01:00
switchdev switchdev: Execute bridge ndos only for bridge ports 2016-10-19 10:58:04 -04:00
tipc tipc: fix nametbl deadlock at tipc_nametbl_unsubscribe 2017-12-25 14:23:39 +01:00
unix net/unix: don't show information about sockets from other namespaces 2017-11-18 11:22:22 +01:00
vmw_vsock vsock: cancel packets when failing to connect 2017-12-25 14:23:38 +01:00
wimax net:wimax: Fix doucble word "the the" in networking.xml 2015-08-09 22:43:52 -07:00
wireless cfg80211: fix connect/disconnect edge cases 2017-11-02 09:49:15 +01:00
x25 net: x25: remove null checks on arrays calling_ae and called_ae 2016-09-09 18:13:30 -07:00
xfrm xfrm: Copy policy family in clone_policy 2017-12-14 09:28:24 +01:00
compat.c audit: log 32-bit socketcalls 2017-10-08 10:26:06 +02:00
Kconfig strparser: Stream parser for messages 2016-08-17 19:36:23 -04:00
Makefile strparser: Stream parser for messages 2016-08-17 19:36:23 -04:00
socket.c net: initialize msg.msg_flags in recvfrom 2017-12-20 10:07:18 +01:00
sysctl_net.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2016-10-06 09:52:23 -07:00