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Eric Dumazet 72fb96e7bd l2tp: do not use udp_ioctl() 
udp_ioctl(), as its name suggests, is used by UDP protocols,
but is also used by L2TP :(

L2TP should use its own handler, because it really does not
look the same.

SIOCINQ for instance should not assume UDP checksum or headers.

Thanks to Andrey and syzkaller team for providing the report
and a nice reproducer.

While crashes only happen on recent kernels (after commit
7c13f97ffd ("udp: do fwd memory scheduling on dequeue")), this
probably needs to be backported to older kernels.

Fixes: 7c13f97ffd ("udp: do fwd memory scheduling on dequeue")
Fixes: 8558467201 ("udp: Fix udp_poll() and ioctl()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2017-02-10 15:57:34 -05:00
..
6lowpan 6lowpan: ndisc: no overreact if no short address is available 2016-09-19 20:19:34 +02:00
9p IB/core: add support to create a unsafe global rkey to ib_create_pd 2016-09-23 13:47:44 -04:00
802 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
8021q Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
appletalk appletalk: use IS_ENABLED() instead of checking for built-in or module 2016-09-10 21:19:10 -07:00
atm net: atm: Fix warnings in net/atm/lec.c when !CONFIG_PROC_FS 2016-12-28 15:11:32 -05:00
ax25 ax25: Fix segfault after sock connection timeout 2017-01-16 14:39:58 -05:00
batman-adv batman-adv: Decrease hardif refcnt on fragmentation send error 2017-01-04 08:22:04 +01:00
bluetooth Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-12-16 10:24:44 -08:00
bridge bridge: netlink: call br_changelink() during br_dev_newlink() 2017-01-20 15:07:27 -05:00
caif Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-06 21:33:19 -05:00
can can: bcm: fix hrtimer/tasklet termination in bcm op removal 2017-01-30 11:05:04 +01:00
ceph libceph: make sure ceph_aes_crypt() IV is aligned 2017-01-18 17:58:45 +01:00
core udp: properly cope with csum errors 2017-02-07 11:19:00 -05:00
dcb net: dcb: set error code on failures 2016-12-03 23:54:25 -05:00
dccp tcp: don't annotate mark on control socket from tcp_v6_send_response() 2017-01-27 10:33:56 -05:00
decnet Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
dns_resolver
…
dsa net: dsa: Do not destroy invalid network devices 2017-02-08 14:50:51 -05:00
ethernet net: introduce device min_header_len 2017-02-08 13:56:37 -05:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-30 12:42:58 -04:00
ieee802154 Makefile: drop -D__CHECK_ENDIAN__ from cflags 2016-12-16 00:13:43 +02:00
ipv4 igmp, mld: Fix memory leak in igmpv3/mld_del_delrec() 2017-02-09 16:43:45 -05:00
ipv6 igmp, mld: Fix memory leak in igmpv3/mld_del_delrec() 2017-02-09 16:43:45 -05:00
ipx ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
irda Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
iucv net/af_iucv: don't use paged skbs for TX on HiperSockets 2017-01-10 21:08:29 -05:00
kcm kcm: fix 0-length case for kcm_sendmsg() 2017-02-09 16:38:48 -05:00
key netns: make struct pernet_operations::id unsigned int 2016-11-18 10:59:15 -05:00
l2tp l2tp: do not use udp_ioctl() 2017-02-10 15:57:34 -05:00
l3mdev net: ipv6: Remove l3mdev_get_saddr6 2016-09-10 23:12:53 -07:00
lapb Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
llc net: fix sleeping for sk_wait_event() 2016-11-14 13:17:21 -05:00
mac80211 mac80211: Fix adding of mesh vendor IEs 2017-02-06 07:55:44 +01:00
mac802154 ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
mpls net: Specify the owning module for lwtunnel ops 2017-01-24 16:21:36 -05:00
ncsi net/ncsi: Improve HNCDSC AEN handler 2016-10-20 11:23:08 -04:00
netfilter netfilter: nf_tables: bump set->ndeact on set flush 2017-01-24 21:46:59 +01:00
netlabel netlabel: add CALIPSO to the list of built-in protocols 2017-01-06 22:20:45 -05:00
netlink Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
netrom
…
nfc genetlink: mark families as __ro_after_init 2016-10-27 16:16:09 -04:00
openvswitch openvswitch: maintain correct checksum state in conntrack actions 2017-01-15 22:15:16 -05:00
packet packet: round up linear to header len 2017-02-08 13:56:37 -05:00
phonet netns: make struct pernet_operations::id unsigned int 2016-11-18 10:59:15 -05:00
qrtr net: qrtr: Mark 'buf' as little endian 2017-01-10 20:45:04 -05:00
rds RDS: use rb_entry() 2016-12-20 14:22:49 -05:00
rfkill
…
rose Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
rxrpc rxrpc: abstract away knowledge of IDR internals 2016-12-14 16:04:10 -08:00
sched net/sched: matchall: Fix configuration race 2017-02-01 11:57:33 -05:00
sctp sctp: check af before verify address in sctp_addr_id2transport 2017-02-07 14:07:23 -05:00
strparser strparser: Propagate correct error code in strp_recv() 2016-10-12 01:51:49 -04:00
sunrpc svcrpc: fix oops in absence of krb5 module 2017-01-31 12:29:24 -05:00
switchdev Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-30 12:42:58 -04:00
tipc tipc: fix cleanup at module unload 2017-01-24 16:14:58 -05:00
unix af_unix: move unix_mknod() out of bindlock 2017-01-24 14:30:56 -05:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-17 20:17:04 -08:00
wimax genetlink: mark families as __ro_after_init 2016-10-27 16:16:09 -04:00
wireless nl80211: Fix mesh HT operation check 2017-02-06 07:59:07 +01:00
x25 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
xfrm ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
Kconfig cgroup: move CONFIG_SOCK_CGROUP_DATA to init/Kconfig 2017-01-11 09:47:10 -05:00
Makefile strparser: Stream parser for messages 2016-08-17 19:36:23 -04:00
compat.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
socket.c net: socket: Make unnecessarily global sockfs_setattr() static 2017-01-10 11:29:50 -05:00
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