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Jiong Wang 69ca8d1b93 nfp: bpf: fix static check error through tightening shift amount adjustment 
[ Upstream commit 69e168ebdc ]

NFP shift instruction has something special. If shift direction is left
then shift amount of 1 to 31 is specified as 32 minus the amount to shift.

But no need to do this for indirect shift which has shift amount be 0. Even
after we do this subtraction, shift amount 0 will be turned into 32 which
will eventually be encoded the same as 0 because only low 5 bits are
encoded, but shift amount be 32 will fail the FIELD_PREP check done later
on shift mask (0x1f), due to 32 is out of mask range. Such error has been
observed when compiling nfp/bpf/jit.c using gcc 8.3 + O3.

This issue has started when indirect shift support added after which the
incoming shift amount to __emit_shf could be 0, therefore it is at that
time shift amount adjustment inside __emit_shf should have been tightened.

Fixes: 991f5b3651 ("nfp: bpf: support logic indirect shifts (BPF_[L|R]SH | BPF_X)")
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reported-by: Pablo Cascón <pablo.cascon@netronome.com
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:50:48 +01:00
..
accessibility
acpi ACPI: button: reinitialize button state upon resume 2020-01-27 14:50:38 +01:00
amba
android binder: Handle start==NULL in binder_update_page_range() 2019-12-13 08:52:52 +01:00
ata libata: Fix retrieving of active qcs 2020-01-09 10:19:01 +01:00
atm atm: zatm: Fix empty body Clang warnings 2019-12-01 09:16:41 +01:00
auxdisplay
base driver core: Fix PM-runtime for links added during consumer probe 2020-01-27 14:50:26 +01:00
bcma
block rbd: clear ->xferred on error from rbd_obj_issue_copyup() 2020-01-27 14:50:30 +01:00
bluetooth Bluetooth: btusb: fix PM leak in error case of setup 2020-01-09 10:19:04 +01:00
bus bus: ti-sysc: Fix sysc_unprepare() when no clocks have been allocated 2020-01-27 14:50:36 +01:00
cdrom cdrom: respect device capabilities during opening action 2020-01-04 19:13:12 +01:00
char hwrng: bcm2835 - fix probe as platform device 2020-01-27 14:50:29 +01:00
clk clk: qcom: Skip halt checks on gcc_pcie_0_pipe_clk for 8998 2020-01-27 14:50:38 +01:00
clocksource clocksource/drivers/exynos_mct: Fix error path in timer resources initialization 2020-01-27 14:50:27 +01:00
connector
cpufreq cpufreq: imx6q: read OCOTP through nvmem for imx6ul/imx6ull 2020-01-12 12:17:24 +01:00
cpuidle cpuidle: Do not unset the driver if it is there already 2019-12-17 20:35:00 +01:00
crypto crypto: caam - fix caam_dump_sg that iterates through scatterlist 2020-01-27 14:50:47 +01:00
dax
dca
devfreq PM / devfreq: Check NULL governor in available_governors_show 2020-01-09 10:19:03 +01:00
dio
dma dmaengine: tegra210-adma: restore channel status 2020-01-27 14:50:45 +01:00
dma-buf dma-buf: Fix memory leak in sync_file_merge() 2019-12-21 10:57:38 +01:00
edac EDAC/ghes: Fix grain calculation 2019-12-31 16:35:58 +01:00
eisa
extcon extcon: sm5502: Reset registers during initialization 2019-12-31 16:35:11 +01:00
firewire net: add annotations on hh->hh_len lockless accesses 2020-01-09 10:19:09 +01:00
firmware firmware: arm_scmi: fix of_node leak in scmi_mailbox_check 2020-01-27 14:50:38 +01:00
fmc
fpga
fsi fsi: core: Fix small accesses and unaligned offsets via sysfs 2019-12-31 16:35:55 +01:00
gnss
gpio gpio: mpc8xxx: Add platform device to gpiochip->parent 2020-01-17 19:47:14 +01:00
gpu drm/vmwgfx: Remove set but not used variable 'restart' 2020-01-27 14:50:37 +01:00
hid HID: hidraw, uhid: Always report EPOLLOUT 2020-01-17 19:46:55 +01:00
hsi
hv vmbus: keep pointer to ring buffer page 2019-11-20 18:47:31 +01:00
hwmon hwmon: (w83627hf) Use request_muxed_region for Super-IO accesses 2020-01-27 14:50:39 +01:00
hwspinlock
hwtracing coresight: catu: fix clang build warning 2020-01-27 14:50:42 +01:00
i2c i2c: i2c-stm32f7: fix 10-bits check in slave free id search loop 2020-01-27 14:49:51 +01:00
ide
idle
iio iio: buffer: align the size of scan bytes to size of the largest element 2020-01-23 08:21:27 +01:00
infiniband RDMA/rxe: Consider skb reserve space based on netdev of GID 2020-01-27 14:50:44 +01:00
input Input: nomadik-ske-keypad - fix a loop timeout test 2020-01-27 14:50:07 +01:00
iommu iommu/vt-d: Make kernel parameter igfx_off work with vIOMMU 2020-01-27 14:50:44 +01:00
ipack
irqchip irqchip: Place CONFIG_SIFIVE_PLIC into the menu 2020-01-23 08:21:36 +01:00
isdn staging: gigaset: add endpoint-type sanity check 2019-12-17 20:34:33 +01:00
leds leds: lm3692x: Handle failure to probe the regulator 2020-01-04 19:12:43 +01:00
lightnvm lightnvm: pblk: fix lock order in pblk_rb_tear_down_check 2020-01-27 14:50:45 +01:00
macintosh macintosh/windfarm_smu_sat: Fix debug output 2019-12-01 09:16:37 +01:00
mailbox mailbox: ti-msgmgr: Off by one in ti_msgmgr_of_xlate() 2020-01-27 14:50:04 +01:00
mcb
md block: fix an integer overflow in logical block size 2020-01-23 08:21:29 +01:00
media media: davinci/vpbe: array underflow in vpbe_enum_outputs() 2020-01-27 14:50:47 +01:00
memory memory: tegra: Don't invoke Tegra30+ specific memory timing setup on Tegra20 2020-01-27 14:50:13 +01:00
memstick memstick: jmb38x_ms: Fix an error handling path in 'jmb38x_ms_probe()' 2019-10-29 09:20:07 +01:00
message scsi: mptfusion: Fix double fetch bug in ioctl 2020-01-23 08:21:28 +01:00
mfd mfd: intel-lpss: Add default I2C device properties for Gemini Lake 2020-01-27 14:49:51 +01:00
misc mei: replace POLL* with EPOLL* for write queues. 2020-01-27 14:49:57 +01:00
mmc mmc: core: fix possible use after free of host 2020-01-27 14:50:45 +01:00
mtd mtd: devices: fix mchp23k256 read and write 2020-01-23 08:21:37 +01:00
mux
net nfp: bpf: fix static check error through tightening shift amount adjustment 2020-01-27 14:50:48 +01:00
nfc NFC: pn533: fix bulk-message timeout 2020-01-23 08:21:34 +01:00
ntb ntb_hw_switchtec: debug print 64bit aligned crosslink BAR Numbers 2020-01-27 14:50:22 +01:00
nubus
nvdimm libnvdimm/btt: fix variable 'rc' set but not used 2020-01-04 19:13:00 +01:00
nvme nvme-fc: fix double-free scenarios on hw queues 2020-01-09 10:18:54 +01:00
nvmem nvmem: imx-ocotp: reset error status on probe 2019-12-31 16:35:37 +01:00
of of: unittest: fix memory leak in attach_node_and_children 2019-12-17 20:36:04 +01:00
opp OPP: Fix missing debugfs supply directory for OPPs 2020-01-27 14:50:04 +01:00
oprofile
parisc
parport parport: load lowlevel driver if ports not found 2019-12-31 16:36:01 +01:00
pci PCI: iproc: Enable iProc config read for PAXBv2 2020-01-27 14:50:43 +01:00
pcmcia
perf
phy phy: cpcap-usb: Fix flakey host idling and enumerating of devices 2020-01-14 20:07:08 +01:00
pinctrl pinctrl: sh-pfc: sh73a0: Fix fsic_spdif pin groups 2020-01-27 14:50:22 +01:00
platform platform/x86: alienware-wmi: printing the wrong error code 2020-01-27 14:50:47 +01:00
pnp
power power: supply: cpcap-battery: Fix signed counter sample register 2019-12-17 20:35:37 +01:00
powercap
pps
ps3
ptp ptp: free ptp device pin descriptors properly 2020-01-23 08:21:35 +01:00
pwm pwm: meson: Don't disable PWM when setting duty repeatedly 2020-01-27 14:50:47 +01:00
rapidio drivers/rapidio/rio_cm.c: fix potential oops in riocm_ch_listen() 2020-01-27 14:50:31 +01:00
ras
regulator regulator: tps65086: Fix tps65086_ldoa1_ranges for selector 0xB 2020-01-27 14:50:33 +01:00
remoteproc remoteproc: qcom: q6v5-mss: Add missing regulator for MSM8996 2020-01-27 14:50:10 +01:00
reset reset: Fix memory leak in reset_control_array_put() 2019-12-05 09:19:36 +01:00
rpmsg rpmsg: glink: Free pending deferred work on remove 2019-12-21 10:57:30 +01:00
rtc rtc: mt6397: Don't call irq_dispose_mapping. 2020-01-27 14:50:37 +01:00
s390 s390/qeth: Fix vnicc_is_in_use if rx_bcast not set 2020-01-17 19:47:01 +01:00
sbus
scsi scsi: qla2xxx: Avoid that qlt_send_resp_ctio() corrupts memory 2020-01-27 14:50:42 +01:00
sfi
sh
siox
slimbus slimbus: ngd: Fix build error on x86 2019-12-13 08:51:54 +01:00
sn
soc soc: amlogic: meson-gx-pwrc-vpu: Fix power on/off register bitmask 2020-01-27 14:50:39 +01:00
soundwire soundwire: intel: fix PDI/stream mapping for Bulk 2019-12-31 16:35:55 +01:00
spi spi: bcm2835aux: fix driver to not allow 65535 (=-1) cs-gpios 2020-01-27 14:50:36 +01:00
spmi
ssb
staging staging: android: vsoc: fix copy_from_user overrun 2020-01-27 14:50:39 +01:00
target scsi: target/core: Fix a race condition in the LUN lookup code 2020-01-27 14:50:38 +01:00
tc
tee tee: optee: add missing of_node_put after of_device_is_available 2019-11-24 08:19:08 +01:00
thermal thermal: mediatek: fix register index error 2020-01-27 14:50:19 +01:00
thunderbolt thunderbolt: Power cycle the router if NVM authentication fails 2019-12-05 09:21:27 +01:00
tty tty: ipwireless: Fix potential NULL pointer dereference 2020-01-27 14:50:16 +01:00
uio driver: uio: fix possible use-after-free in __uio_register_device 2020-01-27 14:50:17 +01:00
usb dwc2: gadget: Fix completed transfer size calculation in DDMA 2020-01-27 14:50:43 +01:00
uwb
vfio vfio/mdev: Fix aborting mdev child device removal if one fails 2020-01-27 14:50:46 +01:00
vhost vhost/vsock: accept only packets with the right dst_cid 2020-01-04 19:13:36 +01:00
video fbdev: chipsfb: remove set but not used variable 'size' 2020-01-27 14:50:21 +01:00
virt virt: vbox: fix memory leak in hgcm_call_preprocess_linaddr 2019-11-06 13:06:04 +01:00
virtio virtio-balloon: fix managed page counts when migrating pages between zones 2019-12-17 20:34:43 +01:00
visorbus
vlynq
vme
w1 w1: IAD Register is yet readable trough iad sys file. Fix snprintf (%u for unsigned, count for max size). 2019-12-01 09:16:22 +01:00
watchdog watchdog: rtd119x_wdt: Fix remove function 2020-01-27 14:50:45 +01:00
xen xen, cpu_hotplug: Prevent an out of bounds access 2020-01-27 14:50:31 +01:00
zorro
Kconfig
Makefile