Huacai Chen 35b4bfbda5 scsi: libsas: align sata_device's rps_resp on a cacheline ...

commit c2e8fbf908 upstream.

The rps_resp buffer in ata_device is a DMA target, but it isn't
explicitly cacheline aligned. Due to this, adjacent fields can be
overwritten with stale data from memory on non-coherent architectures.
As a result, the kernel is sometimes unable to communicate with an SATA
device behind a SAS expander.

Fix this by ensuring that the rps_resp buffer is cacheline aligned.

This issue is similar to that fixed by Commit 84bda12af3 ("libata:
align ap->sector_buf") and Commit 4ee34ea3a1 ("libata: Align
ata_device's id on a cacheline").

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-12-14 09:28:11 +01:00

..

acpi

ACPICA: Linuxize: Restore and fix Intel compiler build

2017-02-26 11:10:52 +01:00

asm-generic

percpu: make this_cpu_generic_read() atomic w.r.t. interrupts

2017-10-12 11:51:23 +02:00

clocksource

clocksource/drivers/sp804: Convert init function to return error

2016-06-28 10:19:30 +02:00

crypto

crypto: ahash - Fix EINPROGRESS notification callback

2017-04-21 09:31:23 +02:00

drm

drm: Don't race connector registration

2017-06-17 06:41:53 +02:00

dt-bindings

ARM: dts: Fix omap3 off mode pull defines

2017-11-21 09:23:22 +01:00

keys

KEYS: Strip trailing spaces

2016-06-14 10:29:44 +01:00

kvm

ARM: KVM: Support vgic-v3

2016-09-22 13:22:21 +02:00

linux

scsi: dma-mapping: always provide dma_get_cache_alignment

2017-12-14 09:28:11 +01:00

math-emu

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media

Merge tag 'v4.8' into patchwork

2016-10-05 16:43:53 -03:00

memory

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misc

cxl: Add cxl_check_and_switch_mode() API to switch bi-modal cards

2016-07-14 20:28:11 +10:00

net

netfilter: nat: Revert "netfilter: nat: convert nat bysrc hash to rhashtable"

2017-11-18 11:22:24 +01:00

pcmcia

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ras

tracing, RAS: Cleanup on __get_str() usage

2016-07-15 15:51:16 -04:00

rdma

RDMA/core: Fix incorrect structure packing for booleans

2017-03-12 06:41:50 +01:00

rxrpc

rxrpc: Add tracepoint for ACK proposal

2016-09-23 15:49:19 +01:00

scsi

scsi: libsas: align sata_device's rps_resp on a cacheline

2017-12-14 09:28:11 +01:00

soc

ARM: at91: define LPDDR types

2017-03-12 06:41:41 +01:00

sound

ALSA: seq: Avoid invalid lockdep class warning

2017-11-15 15:53:18 +01:00

target

target/iscsi: Fix iSCSI task reassignment handling

2017-11-18 11:22:25 +01:00

trace

SUNRPC: Fix tracepoint storage issues with svc_recv and svc_rqst_status

2017-11-30 08:39:07 +00:00

uapi

USB: core: Add type-specific length check of BOS descriptors

2017-12-09 22:01:56 +01:00

video

Merge tag 'fbdev-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux

2016-10-12 11:01:37 -07:00

xen

swiotlb-xen: implement xen_swiotlb_dma_mmap callback

2017-10-05 09:44:05 +02:00

Kbuild

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