openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
linux/drivers
History
Gustavo A. R. Silva 987f028b86 char: hpet: Use flexible-array member 
Old code in the kernel uses 1-byte and 0-byte arrays to indicate the
presence of a "variable length array":

struct something {
    int length;
    u8 data[1];
};

struct something *instance;

instance = kmalloc(sizeof(*instance) + size, GFP_KERNEL);
instance->length = size;
memcpy(instance->data, source, size);

There is also 0-byte arrays. Both cases pose confusion for things like
sizeof(), CONFIG_FORTIFY_SOURCE, etc.[1] Instead, the preferred mechanism
to declare variable-length types such as the one above is a flexible array
member[2] which need to be the last member of a structure and empty-sized:

struct something {
        int stuff;
        u8 data[];
};

Also, 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
unadvertenly introduced[3] to the codebase from now on.

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

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: https://lore.kernel.org/r/20200120235326.GA29231@embeddedor.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2020-01-23 19:54:26 +01:00
..
accessibility
…
acpi ACPI: PM: Avoid attaching ACPI PM domain to certain devices 2019-12-10 00:22:18 +01:00
amba
…
android binder: fix log spam for existing debugfs file creation. 2020-01-22 15:14:24 +01:00
ata ata: ahci_brcm: Add missing clock management during recovery 2019-12-25 20:47:24 -07:00
atm atm: eni: fix uninitialized variable warning 2020-01-08 13:11:00 -08:00
auxdisplay auxdisplay: charlcd: deduplicate simple_strtoul() 2019-12-04 19:44:12 -08:00
base Fix built-in early-load Intel microcode alignment 2020-01-15 11:50:37 -08:00
bcma
…
block block-5.5-2020-01-16 2020-01-17 05:54:18 -08:00
bluetooth Bluetooth: btbcm: Use the BDADDR_PROPERTY quirk 2019-11-22 13:35:20 +01:00
bus Merge 5.5-rc7 into char-misc-next 2020-01-22 09:08:01 +01:00
cdrom cdrom: respect device capabilities during opening action 2019-11-26 13:02:24 -07:00
char char: hpet: Use flexible-array member 2020-01-23 19:54:26 +01:00
clk ARM: SoC fixes 2020-01-16 19:42:08 -08:00
clocksource clocksource: riscv: add notrace to riscv_sched_clock 2020-01-04 21:48:48 -08:00
connector
…
counter
…
cpufreq Merge branch 'cpufreq/arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm 2020-01-07 10:41:35 +01:00
cpuidle cpuidle: teo: Fix intervals[] array indexing bug 2020-01-13 11:14:58 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-01-15 10:21:34 -08:00
dax libnvdimm for 5.5 2019-12-01 18:43:25 -08:00
dca
…
devfreq PM / devfreq: tegra: Add COMMON_CLK dependency 2019-12-23 10:42:58 +09:00
dio
…
dma ioat: ioat_alloc_ring() failure handling. 2019-12-27 12:06:06 +05:30
dma-buf - A fix for a memory leak in the dma-buf support 2019-12-09 17:13:19 +10:00
edac riscv: move sifive_l2_cache.h to include/soc 2020-01-12 10:12:44 -08:00
eisa
…
extcon extcon: sm5502: Remove unneeded semicolon 2019-12-16 10:23:19 +09:00
firewire FireWire (IEEE 1394) subsystem updates: 2019-12-02 14:13:00 -08:00
firmware Merge 5.5-rc7 into char-misc-next 2020-01-22 09:08:01 +01:00
fpga fpga: xilinx-pr-decoupler: Remove clk_get error message for probe defer 2020-01-10 12:51:56 -08:00
fsi
…
gnss
…
gpio Revert "gpio: thunderx: Switch to GPIOLIB_IRQCHIP" 2020-01-15 11:17:21 +01:00
gpu drm fixes for 5.5-rc7 2020-01-18 13:57:31 -08:00
greybus
…
hid HID: hidraw, uhid: Always report EPOLLOUT 2020-01-10 15:34:28 +01:00
hsi
…
hv Merge branch 'akpm' (patches from Andrew) 2019-12-01 20:36:41 -08:00
hwmon compat_ioctl: remove most of fs/compat_ioctl.c 2019-12-01 13:46:15 -08:00
hwspinlock
…
hwtracing coresight: etm4x: Fix unused function warning 2020-01-14 15:38:28 +01:00
i2c i2c: iop3xx: Fix memory leak in probe error path 2020-01-15 20:31:27 +01:00
i3c
…
ide compat_ioctl: remove most of fs/compat_ioctl.c 2019-12-01 13:46:15 -08:00
idle cpuidle: Drop disabled field from struct cpuidle_state 2019-11-29 11:48:39 +01:00
iio iio: light: vcnl4000: Fix scale for vcnl4040 2020-01-13 12:08:40 +01:00
infiniband i40iw: Remove setting of VMA private data and use rdma_user_mmap_io 2020-01-07 15:07:37 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-01-09 15:37:40 -08:00
interconnect interconnect: qcom: Add MSM8916 interconnect provider driver 2020-01-07 09:30:09 +02:00
iommu iommu/dma: fix variable 'cookie' set but not used 2020-01-07 17:08:58 +01:00
ipack
…
irqchip irqchip/ingenic: Get rid of the legacy IRQ domain 2020-01-13 17:45:23 +01:00
isdn compat_ioctl: remove most of fs/compat_ioctl.c 2019-12-01 13:46:15 -08:00
leds Merge tag 'leds-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds 2019-12-01 16:09:28 -08:00
lightnvm
…
macintosh powerpc updates for 5.5 2019-11-30 14:35:43 -08:00
mailbox mailbox changes for v5.5 2019-12-01 18:42:02 -08:00
mcb
…
md block: fix an integer overflow in logical block size 2020-01-15 21:43:09 -07:00
media media updates for v5.5-rc5 2020-01-04 10:41:08 -08:00
memory memory: tegra: Fixes for v5.5-rc1 2019-12-06 08:28:51 -08:00
memstick pci-v5.5-changes 2019-12-03 13:58:22 -08:00
message scsi: mptfusion: Fix double fetch bug in ioctl 2020-01-15 23:05:52 -05:00
mfd chrome platform changes for v5.5 2019-12-03 14:37:12 -08:00
misc mei: me: add comet point (lake) H device ids 2020-01-22 10:01:01 +01:00
mmc mmc: sdhci-of-esdhc: re-implement erratum A-009204 workaround 2019-12-19 08:13:43 +01:00
mtd mtd: rawnand: gpmi: Restore nfc timing setup after suspend/resume 2020-01-17 22:45:09 +01:00
mux
…
net cxgb4: reject overlapped queues in TC-MQPRIO offload 2020-01-19 16:12:53 +01:00
nfc NFC: pn533: fix bulk-message timeout 2020-01-13 18:50:18 -08:00
ntb Add Hygon Device ID to the AMD NTB device driver 2019-12-07 18:38:17 -08:00
nubus
…
nvdimm libnvdimm for 5.5 2019-12-01 18:43:25 -08:00
nvme nvmet: fix per feat data len for get_feature 2020-01-10 08:55:50 -07:00
nvmem nvmem: add QTI SDAM driver 2020-01-16 20:56:49 +01:00
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-12-22 09:54:33 -08:00
opp
…
oprofile Printk changes for 5.5 2019-11-25 19:40:40 -08:00
parisc
…
parport parport: daisy: use new parport device model 2019-11-13 19:09:49 +08:00
pci PCI: rockchip: Fix IO outbound ATU register number 2019-12-12 15:25:37 -06:00
pcmcia pcmcia: remove unused dprintk definition 2019-11-22 07:03:45 +01:00
perf perf/smmuv3: Remove the leftover put_cpu() in error path 2019-12-18 16:15:36 +00:00
phy phy/rockchip: inno-hdmi: round clock rate down to closest 1000 Hz 2019-12-31 15:46:08 +05:30
pinctrl pinctrl: meson: Fix wrong shift value when get drive-strength 2020-01-07 11:21:07 +01:00
platform platform/chrome fixes for v5.5-rc7. 2020-01-16 10:26:40 -08:00
pnp
…
power Additional power management updates for 5.5-rc1 2019-12-04 10:48:09 -08:00
powercap powercap: intel_rapl: add NULL pointer check to rapl_mmio_cpu_online() 2020-01-07 12:24:34 +01:00
pps
…
ps3
…
ptp ptp: free ptp device pin descriptors properly 2020-01-14 10:58:57 -08:00
pwm pwm: Changes for v5.5-rc1 2019-12-05 11:28:14 -08:00
rapidio drivers/rapidio/rio-access.c: fix missing include of <linux/rio_drv.h> 2019-12-04 19:44:13 -08:00
ras
…
regulator regulator: Fixes for v5.5 2020-01-06 12:04:31 -08:00
remoteproc remoteproc: stm32: fix probe error case 2019-11-18 20:35:16 -08:00
reset reset: Do not register resource data for missing resets 2019-12-10 11:43:37 +01:00
rpmsg rpmsg updates for v5.5 2019-12-01 18:39:24 -08:00
rtc rtc: cmos: Revert "rtc: Fix the AltCentury value on AMD/Hygon platform" 2020-01-04 05:31:50 +01:00
s390 s390/zcrypt: move ap device reset from bus to driver code 2020-01-09 16:59:18 +01:00
sbus
…
scsi SCSI fixes on 20200118 2020-01-18 12:12:36 -08:00
sfi
…
sh
…
siox siox: Use the correct style for SPDX License Identifier 2020-01-14 21:46:53 +01:00
slimbus slimbus: qcom: add missed clk_disable_unprepare in remove 2020-01-14 21:46:48 +01:00
soc ARM: SoC fixes 2020-01-16 19:42:08 -08:00
soundwire soundwire: cadence: fix kernel-doc parameter descriptions 2020-01-16 17:34:38 +05:30
spi spi: Fixes for v5.5 2020-01-06 12:34:44 -08:00
spmi
…
ssb
…
staging staging: comedi: ni_routes: allow partial routing information 2020-01-15 13:30:09 +01:00
target SCSI fixes on 20191227 2019-12-27 17:28:41 -08:00
tc
…
tee optee: Fix multi page dynamic shm pool alloc 2020-01-03 11:21:12 +01:00
thermal drivers: thermal: tsens: Work with old DTBs 2020-01-07 08:22:35 +01:00
thunderbolt thunderbolt: Power cycle the router if NVM authentication fails 2019-11-19 17:35:57 +01:00
tty serdev: Don't claim unsupported ACPI serial devices 2020-01-06 20:00:44 +01:00
uio uio: uio_pdrv_genirq: Do not log an error when deferring probe routine. 2020-01-14 15:27:51 +01:00
usb USB-serial fixes for 5.5-rc7 2020-01-17 19:40:06 +01:00
vfio VFIO updates for v5.5-rc1 2019-12-07 14:51:04 -08:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-12-08 13:28:11 -08:00
video pci-v5.5-changes 2019-12-03 13:58:22 -08:00
virt compat_ioctl: remove most of fs/compat_ioctl.c 2019-12-01 13:46:15 -08:00
virtio virtio_balloon: divide/multiply instead of shifts 2019-12-11 08:14:07 -05:00
visorbus visorbus: fix uninitialized variable access 2020-01-14 15:30:35 +01:00
vlynq
…
vme vme: bridges: reduce stack usage 2020-01-14 21:46:47 +01:00
w1 w1: omap-hdq: Simplify driver with PM runtime autosuspend 2020-01-14 21:46:48 +01:00
watchdog watchdog: orion: fix platform_get_irq() complaints 2019-12-30 15:58:29 +01:00
xen xen: branch for v5.5-rc3 2019-12-21 06:24:56 -08:00
zorro
…
Kconfig
…
Makefile
…