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Gustavo A. R. Silva b18ae8dd9d dm: replace zero-length array with flexible-array 
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2020-05-20 17:09:44 -04:00
..
accessibility
acpi PM: ACPI: Output correct message on target power state 2020-04-27 10:33:40 +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: Ensure wait_for_device_probe() waits until the deferred_probe_timeout fires 2020-04-28 17:57:13 +02:00
bcma
block virtio-blk: handle block_device_operations callbacks after hot unplug 2020-05-02 10:28:13 -04:00
bluetooth
bus bus: mhi: core: Fix channel device name conflict 2020-05-05 16:59:54 +02:00
cdrom
char virtio: fixes, cleanups 2020-04-21 12:27:18 -07:00
clk clk: sprd: don't gate uart console clock 2020-04-13 12:20:07 -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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-06 20:53:22 -07:00
dax dax: Move mandatory ->zero_page_range() check in alloc_dax() 2020-04-02 19:15:03 -07:00
dca
devfreq
dio
dma dmaengine: dmatest: Fix process hang when reading 'wait' parameter 2020-04-28 21:46:35 +05:30
dma-buf dma-buf: fix documentation build warnings 2020-04-30 19:47:39 +05:30
edac
eisa
extcon Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
firewire
firmware gcc-10: mark more functions __init to avoid section mismatch warnings 2020-05-09 17:50:03 -07:00
fpga
fsi
gnss
gpio This is the bulk of GPIO development for the v5.7 kernel cycle. 2020-04-04 10:27:00 -07:00
gpu A few minor fixes for an ordering issue in virtio, an (old) gcc warning 2020-05-08 15:04:25 +10:00
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: (jc42) Fix name to have no illegal characters 2020-04-18 10:13:07 -07:00
hwspinlock
hwtracing
i2c i2c: aspeed: Avoid i2c interrupt status clear race condition. 2020-04-30 16:12:33 +02:00
i3c
ide drivers/ide: Fix build regression. 2020-04-04 18:07:59 -07:00
idle
iio First set of IIO fixes for the 5.7 cycle. 2020-04-20 14:07:00 +02:00
infiniband RDMA/core: Fix race between destroy and release FD object 2020-04-24 15:40:41 -03:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-04-07 20:20:12 -07:00
interconnect interconnect: qcom: Move the static keyword to the front of declaration 2020-04-29 13:11:44 +02:00
iommu iommu/virtio: Reverse arguments to list_add 2020-05-08 17:31:18 +02:00
ipack
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
macintosh Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
mailbox
mcb
md dm: replace zero-length array with flexible-array 2020-05-20 17:09:44 -04:00
media
memory ARM: driver updates 2020-04-03 15:05:35 -07:00
memstick
message
mfd
misc mei: me: disable mei interface on LBG servers. 2020-05-05 16:56:41 +02:00
mmc mmc: sdhci-pci: Fix eMMC driver strength for BYT-based controllers 2020-04-22 17:57:17 +02:00
most most: core: use function subsys_initcall() 2020-04-28 15:04:09 +02:00
mtd mtd: spi-nor: Compile files in controllers/ directory 2020-04-09 22:00:13 +02:00
mux
net net: flow_offload: skip hw stats check for FLOW_ACTION_HW_STATS_DONT_CARE 2020-05-06 20:13:10 -07:00
nfc
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: fix possible hang when ns scanning fails during error recovery 2020-05-09 16:07:58 -06:00
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
perf
phy phy: qualcomm: usb-hs-28nm: Prepare clocks in init 2020-04-30 12:10:49 +05:30
pinctrl This is the bulk of GPIO development for the v5.7 kernel cycle. 2020-04-04 10:27:00 -07:00
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
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
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/qeth: fix cancelling of TX timer on dev_close() 2020-05-04 11:21:40 -07:00
sbus
scsi scsi: ibmvscsi: Fix WARN_ON during event pool release 2020-04-28 22:59:55 -04:00
sfi
sh
siox
slimbus
soc arm64: soc: ZynqMP SoC fixes for v5.7 2020-04-21 14:21:20 +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 staging: gasket: Check the return value of gasket_get_bar_index() 2020-05-05 12:36:05 +02:00
target scsi: target/iblock: fix WRITE SAME zeroing 2020-04-22 00:02:13 -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 fixes for 5.7-rc5 2020-05-08 08:56:16 -07:00
uio
usb usb: chipidea: msm: Ensure proper controller reset using role switch API 2020-05-07 08:46:35 +02:00
vdpa vhost: disable for OABI 2020-04-20 10:19:22 -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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-06 20:53:22 -07:00
video drm fixes for 5.7-rc1 2020-04-07 20:24:34 -07:00
virt
virtio virtio-balloon: Avoid using the word 'report' when referring to free page hinting 2020-04-17 06:05:30 -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