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c07d27927f
mirror_ubuntu-kernels/drivers/net/ethernet
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Jack Morgenstein c07d27927f net/mlx4_core: Fix locking in SRIOV mode when switching between events and polling 
In procedures mlx4_cmd_use_events() and mlx4_cmd_use_polling(), we need to
guarantee that there are no FW commands in progress on the comm channel
(for VFs) or wrapped FW commands (on the PF) when SRIOV is active.

We do this by also taking the slave_cmd_mutex when SRIOV is active.

This is especially important when switching from event to polling, since we
free the command-context array during the switch.  If there are FW commands
in progress (e.g., waiting for a completion event), the completion event
handler will access freed memory.

Since the decision to use comm_wait or comm_poll is taken before grabbing
the event_sem/poll_sem in mlx4_comm_cmd_wait/poll, we must take the
slave_cmd_mutex as well (to guarantee that the decision to use events or
polling and the call to the appropriate cmd function are atomic).

Fixes: a7e1f04905 ("net/mlx4_core: Fix deadlock when switching between polling and event fw commands")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-12 15:00:15 -07:00
..
3com net: 3com: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 12:43:15 -05:00
8390 net: 8390: fix potential NULL pointer dereferences 2019-03-12 14:49:49 -07:00
adaptec net: adaptec: starfire: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 12:43:15 -05:00
aeroflex cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
agere
alacritech cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
allwinner
alteon net: alteon: replace dev_kfree_skb_irq by dev_consume_skb_irq 2019-01-28 23:09:19 -08:00
altera net: altera_tse: fix msgdma_tx_completion on non-zero fill_level case 2019-01-27 10:39:07 -08:00
amazon net: ena: update driver version from 2.0.2 to 2.0.3 2019-02-12 14:05:07 -05:00
amd net: amd: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 11:56:36 -05:00
apm cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
apple net: apple: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-13 20:50:42 -08:00
aquantia Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-02 12:54:35 -08:00
arc net: arc_emac: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 12:43:15 -05:00
atheros Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-02-24 12:06:19 -08:00
aurora
broadcom Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-02 12:54:35 -08:00
brocade bna: fix indentation issue on call to bfa_ioc_pf_failed 2019-02-02 20:14:38 -08:00
cadence net: macb: Add support for suspend/resume with full power down 2019-03-03 13:51:37 -08:00
calxeda
cavium net: thunder: fix a potential NULL pointer dereference 2019-03-11 13:34:31 -07:00
chelsio cxgb4/chtls: Prefix adapter flags with CXGB4 2019-03-04 10:21:32 -08:00
cirrus
cisco enic: fix build warning without CONFIG_CPUMASK_OFFSTACK 2019-03-07 09:41:08 -08:00
cortina
davicom davicom: Annotate implicit fall through in dm9000_set_io 2019-01-17 15:08:17 -08:00
dec Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-02-08 15:00:17 -08:00
dlink net:dl2k: Replace dev_kfree_skb_irq by dev_consume_skb_irq 2019-02-14 12:25:24 -05:00
emulex benet: remove broken and unused macro 2019-01-28 10:56:01 -08:00
ezchip
faraday drivers: net: Remove unnecessary semicolon 2019-03-01 23:13:49 -08:00
freescale Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-03-05 09:09:55 -08:00
fujitsu net: fujitsu: fix a potential NULL pointer dereference 2019-03-12 14:48:35 -07:00
hisilicon net: hns3: fix to stop multiple HNS reset due to the AER changes 2019-03-09 22:58:47 -08:00
hp
huawei hinic: Add pci device ids 2019-01-22 14:54:08 -08:00
i825xx net: i825xx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 12:43:14 -05:00
ibm net: emac: remove IBM_EMAC_RX_SKB_HEADROOM 2019-02-06 19:50:41 -08:00
intel ice: fix overlong string, update stats output 2019-02-25 08:56:02 -08:00
marvell sky2: Disable MSI on Dell Inspiron 1545 and Gateway P-79 2019-03-04 11:31:25 -08:00
mediatek drivers: net: Remove unnecessary semicolon 2019-03-01 23:13:49 -08:00
mellanox net/mlx4_core: Fix locking in SRIOV mode when switching between events and polling 2019-03-12 15:00:15 -07:00
micrel net: micrel: ks8695net: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 11:56:36 -05:00
microchip lan743x: Fix RX Kernel Panic 2019-03-11 12:20:20 -07:00
moxa net: moxa: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-13 20:50:42 -08:00
mscc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-04 13:26:15 -08:00
myricom net: myri10ge: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 11:56:36 -05:00
natsemi net: ns83820: code cleanup for ns83820_probe_phy() 2019-02-19 14:08:19 -08:00
neterion net: neterion: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-13 20:50:41 -08:00
netronome nfp: fix simple vNIC mailbox length 2019-03-07 11:00:21 -08:00
ni net: nixge: Add support for fixed-link configurations 2019-02-05 10:34:34 -08:00
nuvoton net: nuvoton: w90p910_ether: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 11:56:36 -05:00
nvidia
nxp
oki-semi cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
packetengines net: packetengines: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 12:43:15 -05:00
pasemi cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
qlogic net: qlogic: fix a potential NULL pointer dereference 2019-03-12 14:44:43 -07:00
qualcomm net: qualcomm: emac: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-13 20:50:42 -08:00
rdc
realtek 8139too : Add support for U.S. Robotics USR997901A 10/100 Cardbus NIC 2019-03-08 15:23:23 -08:00
renesas net: sh_eth: fix a missing check of of_get_phy_mode 2019-03-12 14:51:02 -07:00
rocker net: rocker: fix a potential NULL pointer dereference 2019-03-11 16:17:31 -07:00
samsung cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
seeq
sfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-02-15 12:38:38 -08:00
sgi net: sgi: use GFP_ATOMIC under spin lock 2019-02-17 15:51:46 -08:00
silan
sis net: sis: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-13 20:50:42 -08:00
smsc smc911x: pass struct device to DMA API functions 2019-02-12 12:09:24 -05:00
socionext cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
stmicro net: dwmac-sun8i: fix a missing check of of_get_phy_mode 2019-03-12 14:52:00 -07:00
sun net: ethernet: sun: Zero initialize class in default case in niu_add_ethtool_tcam_entry 2019-03-08 15:26:21 -08:00
synopsys
tehuti net: tehuti: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-06 17:38:15 -08:00
ti davinci_emac: always build in CONFIG_OF code 2019-03-07 09:22:35 -08:00
toshiba
tundra cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
via net: via-velocity: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-06 17:38:15 -08:00
wiznet
xilinx net: xilinx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-14 12:43:15 -05:00
xircom
xscale net: ixp4xx_eth: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-13 20:50:54 -08:00
dnet.c
dnet.h
ec_bhf.c
ethoc.c
fealnx.c net: fealnx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles 2019-02-13 20:50:42 -08:00
jme.c net: jme: fix indentation issues 2019-01-18 14:02:55 -08:00
jme.h
Kconfig
korina.c
lantiq_etop.c lantiq_etop: pass struct device to DMA API functions 2019-02-12 12:09:23 -05:00
lantiq_xrx200.c net: lantiq: Do not use eth_change_mtu() 2019-02-24 17:35:42 -08:00
Makefile
netx-eth.c