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Guanglei Li 2c0aa08631 RDS: IB: Fix null pointer issue 
Scenario:
1. Port down and do fail over
2. Ap do rds_bind syscall

PID: 47039  TASK: ffff89887e2fe640  CPU: 47  COMMAND: "kworker/u:6"
 #0 [ffff898e35f159f0] machine_kexec at ffffffff8103abf9
 #1 [ffff898e35f15a60] crash_kexec at ffffffff810b96e3
 #2 [ffff898e35f15b30] oops_end at ffffffff8150f518
 #3 [ffff898e35f15b60] no_context at ffffffff8104854c
 #4 [ffff898e35f15ba0] __bad_area_nosemaphore at ffffffff81048675
 #5 [ffff898e35f15bf0] bad_area_nosemaphore at ffffffff810487d3
 #6 [ffff898e35f15c00] do_page_fault at ffffffff815120b8
 #7 [ffff898e35f15d10] page_fault at ffffffff8150ea95
    [exception RIP: unknown or invalid address]
    RIP: 0000000000000000  RSP: ffff898e35f15dc8  RFLAGS: 00010282
    RAX: 00000000fffffffe  RBX: ffff889b77f6fc00  RCX:ffffffff81c99d88
    RDX: 0000000000000000  RSI: ffff896019ee08e8  RDI:ffff889b77f6fc00
    RBP: ffff898e35f15df0   R8: ffff896019ee08c8  R9:0000000000000000
    R10: 0000000000000400  R11: 0000000000000000  R12:ffff896019ee08c0
    R13: ffff889b77f6fe68  R14: ffffffff81c99d80  R15: ffffffffa022a1e0
    ORIG_RAX: ffffffffffffffff  CS: 0010 SS: 0018
 #8 [ffff898e35f15dc8] cma_ndev_work_handler at ffffffffa022a228 [rdma_cm]
 #9 [ffff898e35f15df8] process_one_work at ffffffff8108a7c6
 #10 [ffff898e35f15e58] worker_thread at ffffffff8108bda0
 #11 [ffff898e35f15ee8] kthread at ffffffff81090fe6

PID: 45659  TASK: ffff880d313d2500  CPU: 31  COMMAND: "oracle_45659_ap"
 #0 [ffff881024ccfc98] __schedule at ffffffff8150bac4
 #1 [ffff881024ccfd40] schedule at ffffffff8150c2cf
 #2 [ffff881024ccfd50] __mutex_lock_slowpath at ffffffff8150cee7
 #3 [ffff881024ccfdc0] mutex_lock at ffffffff8150cdeb
 #4 [ffff881024ccfde0] rdma_destroy_id at ffffffffa022a027 [rdma_cm]
 #5 [ffff881024ccfe10] rds_ib_laddr_check at ffffffffa0357857 [rds_rdma]
 #6 [ffff881024ccfe50] rds_trans_get_preferred at ffffffffa0324c2a [rds]
 #7 [ffff881024ccfe80] rds_bind at ffffffffa031d690 [rds]
 #8 [ffff881024ccfeb0] sys_bind at ffffffff8142a670

PID: 45659                          PID: 47039
rds_ib_laddr_check
  /* create id_priv with a null event_handler */
  rdma_create_id
  rdma_bind_addr
    cma_acquire_dev
      /* add id_priv to cma_dev->id_list */
      cma_attach_to_dev
                                    cma_ndev_work_handler
                                      /* event_hanlder is null */
                                      id_priv->id.event_handler

Signed-off-by: Guanglei Li <guanglei.li@oracle.com>
Signed-off-by: Honglei Wang <honglei.wang@oracle.com>
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Yanjun Zhu <yanjun.zhu@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Acked-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-06 11:44:32 -05:00
..
6lowpan
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
9p
Merge branch 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-01-30 17:58:07 -08:00
802
treewide: setup_timer() -> timer_setup()
2017-11-21 15:57:07 -08:00
8021q
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
appletalk
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
atm
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
ax25
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
batman-adv
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
bluetooth
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
bpf
bpf: fix null pointer deref in bpf_prog_test_run_xdp
2018-02-01 07:43:56 -08:00
bridge
net: bridge: Fix uninitialized error in br_fdb_sync_static()
2018-02-01 09:47:37 -05:00
caif
Currently, hardened usercopy performs dynamic bounds checking on slab
2018-02-03 16:25:42 -08:00
can
can: migrate documentation to restructured text
2018-01-26 10:46:44 +01:00
ceph
We have a set of file locking improvements from Zheng, rbd rw/ro
2017-11-21 05:38:32 -10:00
core
Currently, hardened usercopy performs dynamic bounds checking on slab
2018-02-03 16:25:42 -08:00
dcb
…
dccp
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
decnet
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
dns_resolver
…
dsa
net: dsa: Support internal phy on 'cpu' port
2018-01-23 19:22:38 -05:00
ethernet
…
hsr
…
ieee802154
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-11-04 09:26:51 +09:00
ife
MAINTAINERS: Update Yotam's E-mail
2017-11-01 12:19:03 +09:00
ipv4
net: erspan: fix erspan config overwrite
2018-02-06 11:32:49 -05:00
ipv6
net: erspan: fix erspan config overwrite
2018-02-06 11:32:49 -05:00
iucv
net: annotate ->poll() instances
2017-11-27 16:20:04 -05:00
kcm
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-01-24 23:44:15 -05:00
key
af_key: Fix memory leak in key_notify_policy.
2018-01-10 09:45:11 +01:00
l2tp
l2tp: remove switch block in l2tp_nl_cmd_session_create()
2018-01-19 15:10:23 -05:00
l3mdev
…
lapb
treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts
2017-11-21 16:35:54 -08:00
llc
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
mac80211
debugfs_sta: Remove unneeded semicolons
2018-01-22 14:03:28 +01:00
mac802154
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-11-04 09:26:51 +09:00
mpls
net: use rtnl_register_module where needed
2017-12-04 11:32:39 -05:00
ncsi
net/ncsi: Don't take any action on HNCDSC AEN
2017-12-18 14:50:11 -05:00
netfilter
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
2018-02-01 14:41:46 -05:00
netlabel
net/netlabel: Add list_next_rcu() in rcu_dereference().
2017-11-18 10:32:41 +09:00
netlink
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-01-19 22:59:33 -05:00
netrom
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
nfc
net: annotate ->poll() instances
2017-11-27 16:20:04 -05:00
nsh
openvswitch: enable NSH support
2017-11-08 16:12:33 +09:00
openvswitch
openvswitch: Remove padding from packet before L3+ conntrack processing
2018-02-01 09:46:22 -05:00
packet
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
phonet
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
psample
MAINTAINERS: Update Yotam's E-mail
2017-11-01 12:19:03 +09:00
qrtr
net: use rtnl_register_module where needed
2017-12-04 11:32:39 -05:00
rds
RDS: IB: Fix null pointer issue
2018-02-06 11:44:32 -05:00
rfkill
net: annotate ->poll() instances
2017-11-27 16:20:04 -05:00
rose
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
rxrpc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
sched
cls_u32: fix use after free in u32_destroy_key()
2018-02-06 11:25:54 -05:00
sctp
sctp: fix dst refcnt leak in sctp_v4_get_dst
2018-02-05 21:21:51 -05:00
smc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
strparser
strparser: Call sock_owned_by_user_nocheck
2017-12-28 14:28:22 -05:00
sunrpc
NFS client updates for Linux 4.16
2018-01-30 19:03:48 -08:00
switchdev
net: bridge: Add/del switchdev object on host join/leave
2017-11-10 13:41:40 +09:00
tipc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
tls
tls: Add support for encryption using async offload accelerator
2018-01-31 10:26:30 -05:00
unix
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
vmw_vsock
Merge branch 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-01-30 17:58:07 -08:00
wimax
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
wireless
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-02-04 11:45:55 -08:00
x25
treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts
2017-11-21 16:35:54 -08:00
xfrm
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
2018-01-26 10:22:53 -05:00
compat.c
…
Kconfig
Staging/IIO patches for 4.16-rc1
2018-02-01 09:51:57 -08:00
Makefile
ipx: move Novell IPX protocol support into staging
2017-11-28 13:55:00 +01:00
socket.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-01-31 14:31:10 -08:00
sysctl_net.c
…