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Jann Horn 8cff10da50 netfilter: nf_log: don't hold nf_log_mutex during user access 
commit ce00bf07cc95a57cd20b208e02b3c2604e532ae8 upstream.

The old code would indefinitely block other users of nf_log_mutex if
a userspace access in proc_dostring() blocked e.g. due to a userfaultfd
region. Fix it by moving proc_dostring() out of the locked region.

This is a followup to commit 266d07cb1c ("netfilter: nf_log: fix
sleeping function called from invalid context"), which changed this code
from using rcu_read_lock() to taking nf_log_mutex.

Fixes: 266d07cb1c ("netfilter: nf_log: fix sleeping function calle[...]")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-11 16:03:51 +02:00
..
6lowpan
9p net/9p: Switch to wait_event_killable() 2017-11-30 08:37:25 +00:00
802
8021q vlan: also check phy_driver ts_info for vlan's real device 2018-04-13 19:50:25 +02:00
appletalk
atm net: atm: Fix potential Spectre v1 2018-05-16 10:06:51 +02:00
ax25 ax25: Fix segfault after sock connection timeout 2017-02-04 09:45:09 +01:00
batman-adv batman-adv: fix packet loss for broadcasted DHCP packets to a server 2018-05-30 07:49:06 +02:00
bluetooth Bluetooth: Fix connection if directed advertising and privacy is used 2018-07-03 11:21:35 +02:00
bridge netfilter: ebtables: handle string from userspace with care 2018-07-03 11:21:24 +02:00
caif net: caif: Fix a sleep-in-atomic bug in cfpkt_create_pfx 2017-07-05 14:37:14 +02:00
can can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once 2018-01-31 12:06:08 +01:00
ceph libceph: validate con->state at the top of try_write() 2018-05-02 07:53:42 -07:00
core rtnetlink: validate attributes in do_setlink() 2018-06-13 16:15:29 +02:00
dcb
dccp dccp: don't free ccid2_hc_tx_sock struct in dccp_disconnect() 2018-06-13 16:15:28 +02:00
decnet dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock 2018-02-25 11:03:38 +01:00
dns_resolver KEYS: DNS: limit the length of option strings 2018-04-29 07:50:04 +02:00
dsa net: dsa: select NET_SWITCHDEV 2017-11-15 17:13:11 +01:00
ethernet net: introduce device min_header_len 2017-02-18 16:39:27 +01:00
hsr
ieee802154 net: ieee802154: fix net_device reference release too early 2018-04-13 19:50:10 +02:00
ipv4 ipv4: Fix error return value in fib_convert_metrics() 2018-07-11 16:03:47 +02:00
ipv6 tcp: verify the checksum of the first data segment in a new connection 2018-07-03 11:21:25 +02:00
ipx ipx: call ipxitf_put() in ioctl error path 2017-05-25 14:30:13 +02:00
irda irda: do not leak initialized list.dev to userspace 2017-08-30 10:19:21 +02:00
iucv net/iucv: Free memory obtained by kzalloc 2018-03-31 18:12:33 +02:00
key af_key: Always verify length of provided sadb_key 2018-06-16 09:54:25 +02:00
l2tp l2tp: revert "l2tp: fix missing print session offset info" 2018-05-26 08:48:50 +02:00
l3mdev
lapb
llc llc: properly handle dev_queue_xmit() return value 2018-05-30 07:49:06 +02:00
mac80211 mac80211: Add RX flag to indicate ICV stripped 2018-05-16 10:06:46 +02:00
mac802154
mpls mpls, nospec: Sanitize array index in mpls_label_ok() 2018-03-11 16:19:47 +01:00
netfilter netfilter: nf_log: don't hold nf_log_mutex during user access 2018-07-11 16:03:51 +02:00
netlabel netlabel: If PF_INET6, check sk_buff ip header version 2018-05-30 07:49:17 +02:00
netlink netlink: fix uninit-value in netlink_sendmsg 2018-05-16 10:06:50 +02:00
netrom
nfc NFC: llcp: Limit size of SDP URI 2018-05-30 07:48:59 +02:00
openvswitch openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found 2018-05-26 08:48:47 +02:00
packet packet: fix reserve calculation 2018-06-13 16:15:28 +02:00
phonet
rds RDS: IB: Fix null pointer issue 2018-05-30 07:48:56 +02:00
rfkill rfkill: gpio: fix memory leak in probe error path 2018-05-16 10:06:51 +02:00
rose
rxrpc rxrpc: check return value of skb_to_sgvec always 2018-04-13 19:50:23 +02:00
sched net_sched: fq: take care of throttled flows before reuse 2018-05-26 08:48:47 +02:00
sctp sctp: delay the authentication for the duplicated cookie-echo chunk 2018-05-26 08:48:49 +02:00
sunrpc rpc_pipefs: fix double-dput() 2018-04-24 09:32:11 +02:00
switchdev
tipc tipc: add policy for TIPC_NLA_NET_ADDR 2018-04-29 07:50:06 +02:00
unix net/unix: don't show information about sockets from other namespaces 2017-11-18 11:11:06 +01:00
vmw_vsock vsock: use new wait API for vsock_stream_sendmsg() 2017-11-30 08:37:19 +00:00
wimax
wireless cfg80211: limit wiphy names to 128 bytes 2018-05-26 08:49:00 +02:00
x25 net: x25: fix one potential use-after-free issue 2018-04-13 19:50:07 +02:00
xfrm xfrm: skip policies marked as dead while rehashing 2018-07-03 11:21:32 +02:00
compat.c net: support compat 64-bit time in {s,g}etsockopt 2018-05-26 08:48:47 +02:00
Kconfig Make DST_CACHE a silent config option 2018-02-25 11:03:37 +01:00
Makefile
socket.c bpf: introduce BPF_JIT_ALWAYS_ON config 2018-02-03 17:04:24 +01:00
sysctl_net.c