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443a858158
linux-next/drivers/net
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Saeed Mahameed 443a858158 net/mlx5: E-Switch, UBSAN fix undefined behavior in mlx5_eswitch_mode 
With debug kernel UBSAN detects the following issue, which might happen
when eswitch instance is not created, fix this by testing the eswitch
pointer before returning the eswitch mode, if not set return mode =
SRIOV_NONE.

[   32.528951] UBSAN: Undefined behaviour in drivers/net/ethernet/mellanox/mlx5/core/eswitch.c:2219:12
[   32.528951] member access within null pointer of type 'struct mlx5_eswitch'
[   32.528951] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.18.0-rc3-dirty #181
[   32.528951] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org 04/01/2014
[   32.528951] Call Trace:
[   32.528951]  dump_stack+0xc7/0x13b
[   32.528951]  ? show_regs_print_info+0x5/0x5
[   32.528951]  ? __pm_runtime_use_autosuspend+0x140/0x140
[   32.528951]  ubsan_epilogue+0x9/0x49
[   32.528951]  ubsan_type_mismatch_common+0x1f9/0x2c0
[   32.528951]  ? ucs2_as_utf8+0x310/0x310
[   32.528951]  ? device_initialize+0x229/0x2e0
[   32.528951]  __ubsan_handle_type_mismatch+0x9f/0xc9
[   32.528951]  ? __ubsan_handle_divrem_overflow+0x19b/0x19b
[   32.578008]  ? ib_device_get_by_index+0xf0/0xf0
[   32.578008]  mlx5_eswitch_mode+0x30/0x40
[   32.578008]  mlx5_ib_add+0x1e0/0x4a0

Fixes: 57cbd893c4 ("net/mlx5: E-Switch, Move representors definition to a global scope")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
2018-07-18 18:16:57 -07:00
..
appletalk
arcnet
bonding treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
caif
can treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
dsa treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
ethernet net/mlx5: E-Switch, UBSAN fix undefined behavior in mlx5_eswitch_mode 2018-07-18 18:16:57 -07:00
fddi net: fddi: fix a possible null-ptr-deref 2018-06-08 18:47:46 -04:00
fjes
hamradio net: hamradio: use eth_broadcast_addr 2018-06-20 07:51:43 +09:00
hippi treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
hyperv hv_netvsc: Fix napi reschedule while receive completion is busy 2018-07-18 15:23:30 -07:00
ieee802154 net: ieee802154: adf7242: Fix OCL calibration runs 2018-07-09 10:53:12 +02:00
ipvlan ipvlan: call dev_change_flags when ipvlan mode is reset 2018-07-02 20:38:09 +09:00
netdevsim netdevsim: Add extack error message for devlink reload 2018-06-05 12:32:37 -04:00
phy sfp: fix module initialisation with netdev already up 2018-07-11 23:11:34 -07:00
plip
ppp Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
slip treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
team treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
usb net: usb: asix: replace mii_nway_restart in resume path 2018-07-18 13:43:16 -07:00
vmxnet3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-21 16:01:54 -04:00
wan treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
wimax
wireless wireless-drivers fixes for 4.18 2018-07-03 23:29:29 +09:00
xen-netback treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
dummy.c
eql.c
geneve.c net: fix use-after-free in GRO with ESP 2018-07-02 20:34:04 +09:00
gtp.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
ifb.c ifb: fix packets checksum 2018-05-28 23:02:22 -04:00
Kconfig virtio_net: Extend virtio to use VF datapath when available 2018-05-28 22:59:54 -04:00
LICENSE.SRC
loopback.c
macsec.c Revert "macsec: missing dev_put() on error in macsec_newlink()" 2018-04-16 10:01:12 -04:00
macvlan.c macvlan: Use software path for offloaded local, broadcast, and multicast traffic 2018-04-25 08:26:19 -07:00
macvtap.c
Makefile net: Introduce net_failover driver 2018-05-28 22:59:54 -04:00
mdio.c
mii.c
net_failover.c net: net_failover: fix typo in net_failover_slave_register() 2018-06-20 07:56:44 +09:00
netconsole.c
nlmon.c
ntb_netdev.c
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c net: in virtio_net_hdr only add VLAN_HLEN to csum_start if payload holds vlan 2018-06-07 16:15:38 -04:00
thunderbolt.c
tun.c tun: Fix use-after-free on XDP_TX 2018-07-16 13:38:29 -07:00
veth.c
virtio_net.c virtio_net: split XDP_TX kick and XDP_REDIRECT map flushing 2018-06-28 14:27:52 +09:00
vrf.c vrf: add CRC32c offload to device features 2018-05-28 22:55:13 -04:00
vsockmon.c
vxlan.c net: fix use-after-free in GRO with ESP 2018-07-02 20:34:04 +09:00
xen-netfront.c xen-netfront: Update features after registering netdev 2018-06-22 07:54:54 +09:00