Daniel Jurgens 35a9ebd920 net/mlx5: Fix race for multiple RoCE enable ...

[ Upstream commit 734dc065fc ]

There are two potential problems with the existing implementation.

1. Enable and disable can race after the atomic operations.
2. If a command fails the refcount is left in an inconsistent state.

Introduce a lock and perform error checking.

Fixes: a6f7d2aff6 ("net/mlx5: Add support for multiple RoCE enable")
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-04-12 12:32:17 +02:00

..

acpi

ACPI / EC: Fix regression related to PM ops support in ECDT device

2017-12-05 11:26:33 +01:00

asm-generic

mm/vmalloc: add interfaces to free unmapped page table

2018-03-28 18:24:38 +02:00

clocksource

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

crypto

crypto: af_alg - Fix race around ctx->rcvused by making it atomic_t

2018-03-03 10:24:29 +01:00

drm

drm/syncobj: Stop reusing the same struct file for all syncobj -> fd

2018-03-28 18:24:47 +02:00

dt-bindings

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

keys

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kvm

arm/arm64: KVM: Turn kvm_psci_version into a static inline

2018-02-16 20:22:55 +01:00

linux

net/mlx5: Fix race for multiple RoCE enable

2018-04-12 12:32:17 +02:00

math-emu

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media

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memory

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misc

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net

sch_netem: fix skb leak in netem_enqueue()

2018-03-31 18:10:40 +02:00

pcmcia

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ras

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rdma

RDMA/ucma: Introduce safer rdma_addr_size() variants

2018-04-08 14:26:29 +02:00

scsi

scsi: core: Avoid that ATA error handling can trigger a kernel hang or oops

2018-03-15 10:54:29 +01:00

soc

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sound

ALSA: hda - Fix yet remaining issue with vmaster 0dB initialization

2017-11-30 08:40:49 +00:00

target

target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK

2017-11-30 08:40:51 +00:00

trace

mmc: core: Fix tracepoint print of blk_addr and blksz

2018-03-28 18:24:30 +02:00

uapi

serial: 8250: Add Nuvoton NPCM UART

2018-04-08 14:26:30 +02:00

video

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

xen

xen/balloon: Mark unallocated host memory as UNUSABLE

2018-03-03 10:24:28 +01:00