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David S. Miller 49b538e79b RxRPC fixes 
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Merge tag 'rxrpc-fixes-20181008' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
rxrpc: Fix packet reception code

Here are a set of patches that prepares for and fix problems in rxrpc's
package reception code.  There serious problems are:

 (A) There's a window between binding the socket and setting the data_ready
     hook in which packets can find their way into the UDP socket's receive
     queues.

 (B) The skb_recv_udp() will return an error (and clear the error state) if
     there was an error on the Tx side.  rxrpc doesn't handle this.

 (C) The rxrpc data_ready handler doesn't fully drain the UDP receive
     queue.

 (D) The rxrpc data_ready handler assumes it is called in a non-reentrant
 state.

The second patch fixes (A) - (C); the third patch renders (B) and (C)
non-issues by using the recap_rcv hook instead of data_ready - and the
final patch fixes (D).  That last is the most complex.

The preparatory patches are:

 (1) Fix some places that are doing things in the wrong net namespace.

 (2) Stop taking the rcu read lock as it's held by the IP input routine in
     the call chain.

 (3) Only end the Tx phase if *we* rotated the final packet out of the Tx
     buffer.

 (4) Don't assume that the call state won't change after dropping the
     call_state lock.

 (5) Only take receive window and MTU suze parameters from an ACK packet if
     it's the latest ACK packet.

 (6) Record connection-level abort information correctly.

 (7) Fix a trace line.

And then there are three main patches - note that these are mixed in with
the preparatory patches somewhat:

 (1) Fix the setup window (A), skb_recv_udp() error check (B) and packet
     drainage (C).

 (2) Switch to using the encap_rcv instead of data_ready to cut out the
     effects of the UDP read queues and get the packets delivered directly.

 (3) Add more locking into the various packet input paths to defend against
     re-entrance (D).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-10 22:27:38 -07:00
..
android
byteorder
caif
can
cifs
dvb media: dvb/audio.h: get rid of unused APIs 2018-07-30 16:21:49 -04:00
genwqe
hdlc
hsi
iio iio: Add modifier for DUV light 2018-07-23 19:18:10 +01:00
isdn
mmc
netfilter netfilter: uapi: fix linux/netfilter/nf_osf.h userspace compilation errors 2018-08-16 19:37:09 +02:00
netfilter_arp
netfilter_bridge netfilter: ebtables: add ebt_get_target and ebt_get_target_c 2018-04-24 10:29:18 +02:00
netfilter_ipv4
netfilter_ipv6 netfilter: ip6t_srh: extend SRH matching for previous, next and last SID 2018-05-06 23:33:03 +02:00
nfsd
raid
sched
spi
sunrpc
tc_act net/sched: tunnel_key: Allow to set tos and ttl for tc based ip tunnels 2018-07-19 23:26:01 -07:00
tc_ematch
usb USB/PHY patches for 4.19-rc1 2018-08-18 10:21:49 -07:00
wimax
a.out.h
acct.h
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h aio: implement IOCB_CMD_POLL 2018-08-06 10:24:33 +02:00
am437x-vpfe.h
apm_bios.h
arcfb.h
arm_sdei.h
aspeed-lpc-ctrl.h
atalk.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_tcp.h
atm_zatm.h
atm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
audit.h Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2018-08-15 22:54:12 -07:00
auto_dev-ioctl.h
auto_fs4.h autofs4: merge auto_fs.h and auto_fs4.h 2018-06-07 17:34:39 -07:00
auto_fs.h autofs: add AUTOFS_EXP_FORCED flag 2018-08-22 10:52:49 -07:00
auxvec.h
ax25.h
b1lli.h
batadv_packet.h
batman_adv.h
baycom.h
bcache.h bcache: style fix to add a blank line after declarations 2018-08-11 15:46:41 -06:00
bcm933xx_hcs.h
bfs_fs.h
binfmts.h
blkpg.h
blktrace_api.h
blkzoned.h include/uapi/linux/blkzoned.h: Remove a superfluous __packed directive 2018-07-09 09:07:52 -06:00
bpf_common.h
bpf_perf_event.h
bpf.h bpf: Introduce bpf_skb_ancestor_cgroup_id helper 2018-08-13 01:02:39 +02:00
bpfilter.h net: add skeleton of bpfilter kernel module 2018-05-23 13:23:40 -04:00
bpqether.h
bsg.h
bt-bmc.h
btf.h bpf: btf: Clean up BTF_INT_BITS() in uapi btf.h 2018-07-20 10:25:48 +02:00
btrfs_tree.h
btrfs.h btrfs: Add unprivileged version of ino_lookup ioctl 2018-05-31 11:35:24 +02:00
can.h can: uapi: can.h: Fix can error class mask dir path 2018-07-27 10:40:16 +02:00
capability.h
capi.h
cciss_defs.h
cciss_ioctl.h
cdrom.h
cec-funcs.h
cec.h media: uapi/linux/cec.h: add 5V events 2018-07-25 06:59:23 -04:00
cgroupstats.h
chio.h
cm4000_cs.h
cn_proc.h connector: add parent pid and tgid to coredump and exit events 2018-05-01 14:25:37 -04:00
coda_psdev.h
coda.h
coff.h
connector.h
const.h
coresight-stm.h
cramfs_fs.h
cryptouser.h
cuda.h
cyclades.h
cycx_cfm.h
dcbnl.h net: dcb: add DSCP to comment about priority selector types 2018-07-29 12:53:54 -07:00
dccp.h
devlink.h devlink: Add support for region snapshot read command 2018-07-12 17:37:13 -07:00
dlm_device.h
dlm_netlink.h
dlm_plock.h
dlm.h
dlmconstants.h
dm-ioctl.h
dm-log-userspace.h
dma-buf.h
dn.h
dqblk_xfs.h
edd.h
efs_fs_sb.h
elf-em.h
elf-fdpic.h
elf.h MIPS: Add FP_MODE regset support 2018-07-19 13:58:44 -07:00
elfcore.h
errno.h
errqueue.h net/sched: Make etf report drops on error_queue 2018-07-04 22:30:28 +09:00
erspan.h
ethtool.h ethtool: Add WAKE_FILTER and RX_CLS_FLOW_WAKE 2018-08-07 12:15:03 -07:00
eventpoll.h eventpoll.h: wrap casts in () properly 2018-07-15 14:03:06 +02:00
fadvise.h
falloc.h
fanotify.h
fb.h
fcntl.h
fd.h
fdreg.h
fib_rules.h
fiemap.h
filter.h
firewire-cdev.h
firewire-constants.h
flat.h
fou.h
fpga-dfl.h fpga: dfl: afu: add DFL_FPGA_PORT_DMA_MAP/UNMAP ioctls support 2018-07-15 13:55:47 +02:00
fs.h Add bunch of cleanups, and add support for the Speck128/256 2018-06-05 15:15:32 -07:00
fsi.h fsi: scom: Major overhaul 2018-06-18 15:11:53 +10:00
fsl_hypervisor.h
fsmap.h
fuse.h
futex.h
gameport.h
gen_stats.h
genetlink.h
gfs2_ondisk.h
gigaset_dev.h
gpio.h
gsmmux.h
gtp.h
hash_info.h
hdlc.h
hdlcdrv.h
hdreg.h
hid.h
hiddev.h
hidraw.h
hpet.h
hsr_netlink.h
hw_breakpoint.h
hyperv.h
hysdn_if.h
i2c-dev.h
i2c.h
i2o-dev.h
i8k.h
icmp.h
icmpv6.h
if_addr.h net: Add IFA_RT_PRIORITY address attribute 2018-05-29 10:12:45 -04:00
if_addrlabel.h
if_alg.h
if_arcnet.h
if_arp.h
if_bonding.h
if_bridge.h
if_cablemodem.h
if_eql.h
if_ether.h
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h uapi: Fix SPDX tags for files referring to the 'OpenIB.org' license 2018-04-23 11:10:33 -04:00
if_link.h net: report min and max mtu network device settings 2018-07-29 12:57:26 -07:00
if_ltalk.h
if_macsec.h
if_packet.h
if_phonet.h
if_plip.h
if_ppp.h
if_pppol2tp.h
if_pppox.h
if_slip.h
if_team.h
if_tun.h
if_tunnel.h
if_vlan.h
if_x25.h
if_xdp.h xsk: Fix umem fill/completion queue mmap on 32-bit 2018-06-08 00:18:02 +02:00
if.h
ife.h
igmp.h
ila.h ila: Flush netlink command to clear xlat table 2018-06-29 11:32:55 +09:00
in6.h
in_route.h
in.h
inet_diag.h
inotify.h inotify: Add flag IN_MASK_CREATE for inotify_add_watch() 2018-06-27 19:21:25 +02:00
input-event-codes.h
input.h input: add MT_TOOL_DIAL 2018-07-17 15:33:47 +02:00
ioctl.h
ip6_tunnel.h
ip_vs.h
ip.h route: add support for directed broadcast forwarding 2018-07-29 12:37:06 -07:00
ipc.h
ipmi_bmc.h
ipmi_msgdefs.h
ipmi.h
ipsec.h
ipv6_route.h
ipv6.h
ipx.h
irqnr.h
isdn_divertif.h
isdn_ppp.h
isdn.h
isdnif.h
iso_fs.h
ivtv.h
ivtvfb.h
jffs2.h
joystick.h Input: stop telling users to snail-mail Vojtech 2018-07-26 17:04:37 -07:00
Kbuild
kcm.h
kcmp.h
kcov.h
kd.h
kdev_t.h
kernel-page-flags.h mm: mark pages in use for page tables 2018-06-07 17:34:37 -07:00
kernel.h
kernelcapi.h
kexec.h
keyboard.h kbd: complete dead keys definitions 2018-07-07 17:41:38 +02:00
keyctl.h Revert "uapi/linux/keyctl.h: don't use C++ reserved keyword as a struct member name" 2018-09-25 13:28:58 +02:00
kfd_ioctl.h drm/amd: Add CU-masking ioctl definition to kfd_ioctl.h 2018-07-14 19:05:58 -04:00
kvm_para.h KVM: X86: Implement PV IPIs in linux guest 2018-08-06 17:59:22 +02:00
kvm.h KVM: x86: Control guest reads of MSR_PLATFORM_INFO 2018-09-20 00:51:46 +02:00
l2tp.h l2tp: ignore L2TP_ATTR_MTU 2018-08-03 10:03:57 -07:00
libc-compat.h
lightnvm.h
limits.h
lirc.h
llc.h
loop.h
lp.h
lwtunnel.h
magic.h
major.h
map_to_7segment.h
matroxfb.h
max2175.h
mdio.h
media-bus-format.h media: v4l: Add new 2X8 10-bit grayscale media bus code 2018-08-02 06:04:57 -04:00
media.h media: media.h: remove linux/version.h include 2018-07-27 07:52:39 -04:00
mei.h
membarrier.h
memfd.h mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes 2018-10-05 16:32:04 -07:00
mempolicy.h
meye.h
mic_common.h
mic_ioctl.h
mii.h net: phy: add GBit master / slave error detection 2018-07-24 14:41:08 -07:00
minix_fs.h
mman.h mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes 2018-10-05 16:32:04 -07:00
mmtimer.h
module.h
mpls_iptunnel.h
mpls.h
mqueue.h
mroute6.h
mroute.h net: ipmr: add support for passing full packet on wrong vif 2018-07-13 14:21:16 -07:00
msdos_fs.h
msg.h
mtio.h
n_r3964.h
nbd-netlink.h
nbd.h nbd: Add the nbd NBD_DISCONNECT_ON_CLOSE config flag. 2018-06-20 19:10:06 -06:00
ncsi.h
ndctl.h
neighbour.h
net_dropmon.h
net_namespace.h
net_tstamp.h net: Use __u32 in uapi net_stamp.h 2018-07-09 16:31:28 -07:00
net.h
netconf.h route: add support for directed broadcast forwarding 2018-07-29 12:37:06 -07:00
netdevice.h
netfilter_arp.h
netfilter_bridge.h netfilter: bridge: Expose nf_tables bridge hook priorities through uapi 2018-08-03 21:15:09 +02:00
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netfilter.h
netlink_diag.h
netlink.h
netrom.h
nfc.h
nfs2.h
nfs3.h
nfs4_mount.h
nfs4.h
nfs_fs.h
nfs_idmap.h
nfs_mount.h
nfs.h
nfsacl.h
nilfs2_api.h
nilfs2_ondisk.h
nl80211.h This round's updates: 2018-06-30 21:08:12 +09:00
nsfs.h
nubus.h
nvme_ioctl.h
nvram.h
omap3isp.h media: omap3isp: support 64-bit version of omap3isp_stat_data 2018-05-09 16:37:05 -04:00
omapfb.h
oom.h
openvswitch.h openvswitch: kernel datapath clone action 2018-07-08 11:13:25 +09:00
packet_diag.h
param.h
parport.h
patchkey.h
pci_regs.h Merge branch 'pci/virtualization' 2018-08-15 14:59:06 -05:00
pci.h
pcitest.h pci_endpoint_test: Add 2 ioctl commands 2018-07-19 11:46:57 +01:00
perf_event.h perf/UAPI: Clearly mark __PERF_SAMPLE_CALLCHAIN_EARLY as internal use 2018-09-10 10:03:02 +02:00
personality.h
pfkeyv2.h
pg.h
phantom.h
phonet.h
pkt_cls.h net/sched: allow flower to match tunnel options 2018-08-07 12:22:15 -07:00
pkt_sched.h net/sched: add skbprio scheduler 2018-07-24 14:44:00 -07:00
pktcdvd.h
pmu.h macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver 2018-07-31 19:56:42 +10:00
poll.h
posix_acl_xattr.h
posix_acl.h
posix_types.h
ppdev.h
ppp_defs.h
ppp-comp.h
ppp-ioctl.h l2tp: remove pppol2tp_session_ioctl() 2018-08-11 12:13:49 -07:00
pps.h
pr.h
prctl.h docs: Fix some broken references 2018-06-15 18:10:01 -03:00
psample.h
psci.h
psp-sev.h crypto: ccp - Add GET_ID SEV command 2018-05-31 00:13:56 +08:00
ptp_clock.h
ptrace.h
qemu_fw_cfg.h
qnx4_fs.h
qnxtypes.h
qrtr.h
quota.h
radeonfb.h
random.h
raw.h
rds.h uapi: Fix linux/rds.h userspace compilation errors. 2018-09-02 16:14:44 -07:00
reboot.h
reiserfs_fs.h
reiserfs_xattr.h
resource.h
rfkill.h
rio_cm_cdev.h
rio_mport_cdev.h
romfs_fs.h
rose.h
route.h
rpmsg.h rpmsg: char: Switch to SPDX license identifier 2018-06-03 17:37:16 -07:00
rseq.h rseq: uapi: Declare rseq_cs field as union, update includes 2018-07-10 22:18:52 +02:00
rtc.h
rtnetlink.h net: sched: introduce chain object to uapi 2018-07-23 20:44:12 -07:00
rxrpc.h
scc.h
sched.h
scif_ioctl.h
screen_info.h
sctp.h sctp: add spp_ipv6_flowlabel and spp_dscp for sctp_paddrparams 2018-07-04 11:36:54 +09:00
sdla.h
seccomp.h seccomp: Add filter flag to opt-out of SSB mitigation 2018-05-05 00:51:44 +02:00
securebits.h
sed-opal.h
seg6_genl.h
seg6_hmac.h
seg6_iptunnel.h
seg6_local.h ipv6: sr: Add seg6local action End.BPF 2018-05-24 11:57:36 +02:00
seg6.h
selinux_netlink.h
sem.h
serial_core.h
serial_reg.h
serial.h
serio.h
shm.h mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes 2018-10-05 16:32:04 -07:00
signal.h
signalfd.h signal/signalfd: Add support for SIGSYS 2018-04-26 19:51:12 -05:00
smc_diag.h net/smc: retain old name for diag_mode field 2018-10-07 21:06:28 -07:00
smc.h
smiapp.h
snmp.h ip: discard IPv4 datagrams with overlapping segments. 2018-08-05 17:16:46 -07:00
sock_diag.h
socket.h
sockios.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h
stddef.h
stm.h
string.h
suspend_ioctls.h
swab.h
switchtec_ioctl.h
sync_file.h
synclink.h
sysctl.h ipv6: Add icmp_echo_ignore_all support for ICMPv6 2018-08-13 08:42:25 -07:00
sysinfo.h
target_core_user.h scsi: target: tcmu: add read length support 2018-06-18 21:02:52 -04:00
taskstats.h
tcp_metrics.h
tcp.h tcp: add stat of data packet reordering events 2018-08-01 09:56:10 -07:00
tee.h
termios.h
thermal.h
time.h time: Introduce struct __kernel_itimerspec 2018-06-24 14:39:46 +02:00
timerfd.h
times.h
timex.h
tiocl.h
tipc_config.h
tipc_netlink.h tipc: extend sock diag for group communication 2018-06-30 21:05:42 +09:00
tipc_sockets_diag.h
tipc.h tipc: introduce ioctl for fetching node identity 2018-04-27 11:05:41 -04:00
tls.h uapi: Fix SPDX tags for files referring to the 'OpenIB.org' license 2018-04-23 11:10:33 -04:00
toshiba.h
tty_flags.h tty: fix typo in ASYNCB_FOURPORT comment 2018-05-24 18:38:51 +02:00
tty.h
types.h uapi: turn __poll_t sparse checks on by default 2018-05-26 09:16:44 +02:00
udf_fs_i.h
udp.h rxrpc: Use the UDP encap_rcv hook 2018-10-08 15:45:18 +01:00
uhid.h
uinput.h
uio.h
uleds.h
ultrasound.h
un.h
unistd.h
unix_diag.h
usbdevice_fs.h
usbip.h
userfaultfd.h
userio.h
utime.h
utsname.h
uuid.h
uvcvideo.h media: uvcvideo: Send a control event when a Control Change interrupt arrives 2018-07-27 06:39:57 -04:00
v4l2-common.h
v4l2-controls.h media: v4l2-ctrl: Add control for VP9 profile 2018-07-04 09:32:22 -04:00
v4l2-dv-timings.h
v4l2-mediabus.h
v4l2-subdev.h media: v4l: Add support for STD ioctls on subdev nodes 2018-07-24 17:39:28 -04:00
vbox_err.h
vbox_vmmdev_types.h
vboxguest.h
veth.h
vfio_ccw.h
vfio.h
vhost.h vhost: fix VHOST_GET_BACKEND_FEATURES ioctl request definition 2018-09-03 21:23:24 -07:00
videodev2.h media: v4l: Add new 10-bit packed grayscale format 2018-08-02 06:07:05 -04:00
virtio_9p.h
virtio_balloon.h virtio_balloon: add array of stat names 2018-04-24 21:44:01 +03:00
virtio_blk.h
virtio_config.h virtio: update the comments for transport features 2018-06-12 04:59:29 +03:00
virtio_console.h
virtio_crypto.h
virtio_gpu.h drm/virtio: add define for second capset to the virgl code. 2018-05-14 11:01:29 +02:00
virtio_ids.h
virtio_input.h
virtio_mmio.h
virtio_net.h virtio_net: Introduce VIRTIO_NET_F_STANDBY feature bit 2018-05-28 22:59:54 -04:00
virtio_pci.h
virtio_ring.h
virtio_rng.h
virtio_scsi.h
virtio_types.h
virtio_vsock.h
vm_sockets_diag.h
vm_sockets.h
vmcore.h vmcore: add API to collect hardware dump in second kernel 2018-05-14 13:46:04 -04:00
vsockmon.h
vt.h
vtpm_proxy.h
wait.h
wanrouter.h
watchdog.h
wimax.h
wireless.h
wmi.h
x25.h
xattr.h
xfrm.h xfrm: Add a new lookup key to match xfrm interfaces. 2018-06-23 16:07:15 +02:00
xilinx-v4l2-controls.h
zorro_ids.h
zorro.h