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Thomas Falcon bbd669a868 ibmvnic: Fix completion structure initialization 
Fix device initialization completion handling for vNIC adapters.
Initialize the completion structure on probe and reinitialize when needed.
This also fixes a race condition during kdump where the driver can attempt
to access the completion struct before it is initialized:

Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc0000000081acbe0
Oops: Kernel access of bad area, sig: 11 [#1]
LE SMP NR_CPUS=2048 NUMA pSeries
Modules linked in: ibmvnic(+) ibmveth sunrpc overlay squashfs loop
CPU: 19 PID: 301 Comm: systemd-udevd Not tainted 4.18.0-64.el8.ppc64le #1
NIP:  c0000000081acbe0 LR: c0000000081ad964 CTR: c0000000081ad900
REGS: c000000027f3f990 TRAP: 0300   Not tainted  (4.18.0-64.el8.ppc64le)
MSR:  800000010280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE,TM[E]> CR: 28228288  XER: 00000006
CFAR: c000000008008934 DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 1
GPR00: c0000000081ad964 c000000027f3fc10 c0000000095b5800 c0000000221b4e58
GPR04: 0000000000000003 0000000000000001 000049a086918581 00000000000000d4
GPR08: 0000000000000007 0000000000000000 ffffffffffffffe8 d0000000014dde28
GPR12: c0000000081ad900 c000000009a00c00 0000000000000001 0000000000000100
GPR16: 0000000000000038 0000000000000007 c0000000095e2230 0000000000000006
GPR20: 0000000000400140 0000000000000001 c00000000910c880 0000000000000000
GPR24: 0000000000000000 0000000000000006 0000000000000000 0000000000000003
GPR28: 0000000000000001 0000000000000001 c0000000221b4e60 c0000000221b4e58
NIP [c0000000081acbe0] __wake_up_locked+0x50/0x100
LR [c0000000081ad964] complete+0x64/0xa0
Call Trace:
[c000000027f3fc10] [c000000027f3fc60] 0xc000000027f3fc60 (unreliable)
[c000000027f3fc60] [c0000000081ad964] complete+0x64/0xa0
[c000000027f3fca0] [d0000000014dad58] ibmvnic_handle_crq+0xce0/0x1160 [ibmvnic]
[c000000027f3fd50] [d0000000014db270] ibmvnic_tasklet+0x98/0x130 [ibmvnic]
[c000000027f3fda0] [c00000000813f334] tasklet_action_common.isra.3+0xc4/0x1a0
[c000000027f3fe00] [c000000008cd13f4] __do_softirq+0x164/0x400
[c000000027f3fef0] [c00000000813ed64] irq_exit+0x184/0x1c0
[c000000027f3ff20] [c0000000080188e8] __do_irq+0xb8/0x210
[c000000027f3ff90] [c00000000802d0a4] call_do_irq+0x14/0x24
[c000000026a5b010] [c000000008018adc] do_IRQ+0x9c/0x130
[c000000026a5b060] [c000000008008ce4] hardware_interrupt_common+0x114/0x120

Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2019-04-04 18:36:07 -07:00
..
appletalk
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arcnet
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bonding bonding: show full hw address in sysfs for slave entries 2019-03-29 13:32:39 -07:00
caif
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can peak_usb: fix clang build warning 2019-03-07 09:39:46 -08:00
dsa net: dsa: mv88e6xxx: fix few issues in mv88e6390x_port_set_cmode 2019-03-27 21:53:50 -07:00
ethernet ibmvnic: Fix completion structure initialization 2019-04-04 18:36:07 -07:00
fddi
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fjes
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hamradio net: hamradio: remove unused hweight*() defines 2019-02-18 12:10:02 -08:00
hippi
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hyperv hv_netvsc: Fix unwanted wakeup after tx_disable 2019-03-29 13:34:01 -07:00
ieee802154 ieee802154: hwsim: propagate genlmsg_reply return code 2019-03-13 10:13:26 +01:00
ipvlan Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-02-24 12:06:19 -08:00
netdevsim
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phy net: phy: bcm54xx: Encode link speed and activity into LEDs 2019-03-26 11:24:47 -07:00
plip
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ppp pptp: dst_release sk_dst_cache in pptp_sock_destruct 2019-03-13 14:22:49 -07:00
slip
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team team: Free BPF filter when unregistering netdev 2019-03-04 10:57:29 -08:00
usb qmi_wwan: add Olicard 600 2019-03-28 16:58:06 -07:00
vmxnet3
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wan net: wan: z85230: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-25 14:36:15 -08:00
wimax
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wireless mt76x02: do not enable RTS/CTS by default 2019-03-19 17:37:25 +02:00
xen-netback Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-02 12:54:35 -08:00
Kconfig gtp: change NET_UDP_TUNNEL dependency to select 2019-03-18 16:54:42 -07:00
LICENSE.SRC
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Makefile
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Space.c
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dummy.c
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eql.c
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geneve.c geneve: correctly handle ipv6.disable module parameter 2019-03-01 22:07:56 -08:00
gtp.c
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ifb.c
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loopback.c
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macsec.c
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macvlan.c macvlan: add ndo_change_proto_down support 2019-02-24 13:01:04 -08:00
macvtap.c
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mdio.c
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mii.c
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net_failover.c
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netconsole.c
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nlmon.c
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ntb_netdev.c
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rionet.c
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sb1000.c
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sungem_phy.c
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tap.c net: Don't set transport offset to invalid value 2019-02-22 12:55:31 -08:00
thunderbolt.c
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tun.c tun: add a missing rcu_read_unlock() in error path 2019-03-16 13:16:37 -07:00
veth.c veth: Fix -Wformat-truncation 2019-02-23 13:44:58 -08:00
virtio_net.c
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vrf.c vrf: prevent adding upper devices 2019-03-27 22:54:38 -07:00
vsockmon.c
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vxlan.c vxlan: Don't call gro_cells_destroy() before device is unregistered 2019-03-18 17:07:27 -07:00
xen-netfront.c
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