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Michael S. Tsirkin a865e420b9 virtio: force spec specified alignment on types 
The ring element addresses are passed between components with different
alignments assumptions. Thus, if guest/userspace selects a pointer and
host then gets and dereferences it, we might need to decrease the
compiler-selected alignment to prevent compiler on the host from
assuming pointer is aligned.

This actually triggers on ARM with -mabi=apcs-gnu - which is a
deprecated configuration, but it seems safer to handle this
generally.

Note that userspace that allocates the memory is actually OK and does
not need to be fixed, but userspace that gets it from guest or another
process does need to be fixed. The later doesn't generally talk to the
kernel so while it might be buggy it's not talking to the kernel in the
buggy way - it's just using the header in the buggy way - so fixing
header and asking userspace to recompile is the best we can do.

I verified that the produced kernel binary on x86 is exactly identical
before and after the change.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
2020-06-02 02:45:13 -04:00
..
accessibility
acpi ACPI: EC: PM: Avoid flushing EC work when EC GPE is inactive 2020-05-18 13:15:13 +02:00
amba amba: Initialize dma_parms for amba devices 2020-04-28 17:44:34 +02:00
android
ata ata: sata_inic162x fix a spelling issue 2020-04-23 09:59:30 -06:00
atm
auxdisplay
base driver core: Fix handling of SYNC_STATE_ONLY + STATELESS device links 2020-05-21 10:54:32 +02:00
bcma
block block-5.7-2020-05-22 2020-05-22 11:10:42 -07:00
bluetooth
bus bus: mhi: core: Fix some error return code 2020-05-15 16:32:20 +02:00
cdrom
char Convert i2c_new_device() to i2c_new_client_device() 2020-05-17 16:07:30 -07:00
clk clk: qcom: gcc: Fix parent for gpll0_out_even 2020-05-26 17:15:06 -07:00
clocksource clocksource/drivers/timer-vf-pit: Add missing parenthesis 2020-04-05 09:24:58 +02:00
connector
counter counter: 104-quad-8: Add lock guards - generic interface 2020-04-19 17:50:00 +01:00
cpufreq cpufreq: intel_pstate: Only mention the BIOS disabling turbo mode once 2020-04-27 10:30:11 +02:00
cpuidle Merge branch 'pm-cpuidle' 2020-04-10 11:32:22 +02:00
crypto crypto: chelsio/chtls: properly set tp->lsndtime 2020-05-26 23:24:00 -07:00
dax device-dax: don't leak kernel memory to user space after unloading kmem 2020-05-23 10:26:31 -07:00
dca
devfreq
dio
dma dmaengine: tegra210-adma: Fix an error handling path in 'tegra_adma_probe()' 2020-05-19 22:26:01 +05:30
dma-buf dma-buf: fix documentation build warnings 2020-04-30 19:47:39 +05:30
edac Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
eisa
extcon Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
firewire
firmware EFI fixes for v5.7-rc6: 2020-05-22 20:06:25 +02:00
fpga fpga: dfl: pci: fix return value of cci_pci_sriov_configure 2020-03-30 20:45:30 -07:00
fsi
gnss
gpio gpio: fix locking open drain IRQ lines 2020-05-29 14:01:49 +02:00
gpu drm fixes for 5.7 final 2020-05-29 12:32:46 -07:00
greybus
hid HID: quirks: Add HID_QUIRK_NO_INIT_REPORTS quirk for Dell K12A keyboard-dock 2020-05-04 11:24:58 +02:00
hsi
hv hyperv-fixes for 5.7-rc4 2020-04-27 13:28:27 -07:00
hwmon hwmon: (da9052) Synchronize access with mfd 2020-05-13 10:06:09 -07:00
hwspinlock
hwtracing coresight: cti: remove incorrect NULL return check 2020-05-15 16:32:20 +02:00
i2c i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()' 2020-05-15 11:23:49 +02:00
i3c
ide drivers/ide: Fix build regression. 2020-04-04 18:07:59 -07:00
idle Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
iio iio: sca3000: Remove an erroneous 'get_device()' 2020-05-10 10:53:36 +01:00
infiniband IB/ipoib: Fix double free of skb in case of multicast traffic in CM mode 2020-05-27 21:14:09 -03:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-05-28 12:41:11 -07:00
interconnect interconnect: qcom: Move the static keyword to the front of declaration 2020-04-29 13:11:44 +02:00
iommu iommu: Fix reference count leak in iommu_group_alloc. 2020-05-29 15:27:50 +02:00
ipack ipack: tpci200: fix error return code in tpci200_register() 2020-05-15 16:32:20 +02:00
irqchip Merge branch 'irq/gic-v4.1-fixes-5.7' into irq/irqchip-5.7 2020-04-17 08:59:55 +01:00
isdn mISDN: make dmril and dmrim static 2020-04-16 13:52:31 -07:00
leds leds: core: Fix warning message when init_data 2020-04-06 23:12:08 +02:00
lightnvm for-5.7/drivers-2020-03-29 2020-03-30 11:43:51 -07:00
macintosh Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
mailbox
mcb
md - Document DM integrity allow_discard feature that was added during 2020-04-30 16:45:08 -07:00
media Power management updates for 5.7-rc1 2020-03-30 15:05:01 -07:00
memory ARM: driver updates 2020-04-03 15:05:35 -07:00
memstick
message
mfd
misc misc: rtsx: Add short delay after exit from ASPM 2020-05-22 13:27:38 +02:00
mmc mmc: block: Fix use-after-free issue for rpmb 2020-05-25 10:45:17 +02:00
most most: core: use function subsys_initcall() 2020-04-28 15:04:09 +02:00
mtd This pull request contains the following bug fixes for MTD: 2020-05-20 13:23:55 -07:00
mux
net drivers/net/ibmvnic: Update VNIC protocol version reporting 2020-05-29 17:20:59 -07:00
nfc NFC: st21nfca: add missed kfree_skb() in an error path 2020-05-29 17:04:14 -07:00
ntb pci-v5.7-changes 2020-04-03 14:25:02 -07:00
nubus
nvdimm libnvdimm for 5.7 2020-04-08 21:03:40 -07:00
nvme nvme-pci: avoid race between nvme_reap_pending_cqes() and nvme_poll() 2020-05-27 20:32:56 +02:00
nvmem
of of: unittest: kmemleak in duplicate property update 2020-04-17 08:31:34 -05:00
opp opp: Manage empty OPP tables with clk handle 2020-04-13 16:14:55 +05:30
oprofile
parisc parisc: Replace setup_irq() by request_irq() 2020-04-05 22:05:23 +02:00
parport
pci PCI: Move Apex Edge TPU class quirk to fix BAR assignment 2020-04-14 19:16:51 -05:00
pcmcia pcmcia: remove some unused space characters 2020-03-31 18:48:22 +02:00
perf arm64 updates for 5.7: 2020-03-31 10:05:01 -07:00
phy phy: qualcomm: usb-hs-28nm: Prepare clocks in init 2020-04-30 12:10:49 +05:30
pinctrl pinctrl: qcom: Add affinity callbacks to msmgpio IRQ chip 2020-05-12 14:29:29 +02:00
platform chrome-platform fixes for v5.7-rc5 2020-05-06 16:40:14 -07:00
pnp
power change email address for Pali Rohár 2020-04-10 15:36:22 -07:00
powercap Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
pps
ps3 powerpc/ps3: Remove an unneeded NULL check 2020-04-03 00:09:59 +11:00
ptp ptp: Remove unneeded conversion to bool 2020-04-21 15:45:32 -07:00
pwm pwm: pca9685: Fix PWM/GPIO inter-operation 2020-04-03 21:41:42 +02:00
rapidio rapidio: fix an error in get_user_pages_fast() error handling 2020-05-23 10:26:31 -07:00
ras
regulator regulator: Revert "Use driver_deferred_probe_timeout for regulator_init_complete_work" 2020-04-29 19:57:45 +02:00
remoteproc remoteproc fixes for v5.7 2020-04-23 09:28:15 -07:00
reset
rpmsg rpmsg: pull in slab.h 2020-04-17 06:05:29 -04:00
rtc - New Drivers 2020-04-07 19:48:52 -07:00
s390 s390/ism: fix error return code in ism_probe() 2020-05-13 12:14:51 -07:00
sbus
scsi scsi: pm: Balance pm_only counter of request queue during system resume 2020-05-11 19:43:25 -04:00
sfi
sh
siox
slimbus
soc soc: mediatek: cmdq: return send msg error code 2020-05-16 19:55:50 +02:00
soundwire Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
spi sound updates for 5.7-rc1 2020-04-02 15:50:04 -07:00
spmi
ssb
staging iio-fixes-for-5.7b Second set of fixes for IIO in the 5.7 cycle. 2020-05-15 16:04:24 +02:00
target scsi: target: Put lun_ref at end of tmr processing 2020-05-14 20:27:05 -04:00
tc
tee ARM: driver updates 2020-04-03 15:05:35 -07:00
thermal - Convert tsens configuration DT binding to yaml (Rajeshwari) 2020-04-07 20:00:16 -07:00
thunderbolt thunderbolt: Check return value of tb_sw_read() in usb4_switch_op() 2020-04-28 19:00:59 +02:00
tty tty: serial: add missing spin_lock_init for SiFive serial console 2020-05-15 14:55:10 +02:00
uio
usb USB: gadget: fix illegal array access in binding with UDC 2020-05-15 15:42:17 +02:00
vdpa vdpasim: remove unused variable 'ret' 2020-05-11 06:44:12 -04:00
vfio vfio/type1: Fix VA->PA translation for PFNMAP VMAs in vaddr_get_pfn() 2020-04-23 12:10:01 -06:00
vhost virtio: force spec specified alignment on types 2020-06-02 02:45:13 -04:00
video drm fixes for 5.7-rc1 2020-04-07 20:24:34 -07:00
virt
virtio virtio-mmio: Delete an error message in vm_find_vqs() 2020-06-02 02:45:13 -04:00
visorbus
vlynq
vme
w1
watchdog watchdog: sp805: fix restart handler 2020-04-08 11:18:38 +02:00
xen xen: branch for v5.7-rc2 2020-04-17 10:35:17 -07:00
zorro SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
Kconfig virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00
Makefile virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00