Jiong Wang 69e168ebdc nfp: bpf: fix static check error through tightening shift amount adjustment ... 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>		2019-05-09 15:54:30 -07:00
..
accessibility
acpi	Driver core/kobject patches for 5.2-rc1	2019-05-07 13:01:40 -07:00
amba
android	Char/Misc patches for 5.2-rc1 - part 2	2019-05-07 13:39:22 -07:00
ata
atm
auxdisplay
base	Driver core/kobject patches for 5.2-rc1	2019-05-07 13:01:40 -07:00
bcma
block	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
bluetooth
bus
cdrom
char	Initialize the random driver earler; fix CRNG initialization when we	2019-05-07 21:42:23 -07:00
clk
clocksource	Staging / IIO driver patches for 5.2-rc1	2019-05-07 13:31:29 -07:00
connector
counter
cpufreq	Printk changes for 5.2	2019-05-07 09:18:12 -07:00
cpuidle
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2019-05-06 20:15:06 -07:00
dax
dca
devfreq
dio
dma	Remove Mysterious Macro Intended to Obscure Weird Behaviours (mmiowb())	2019-05-06 16:57:52 -07:00
dma-buf
edac	Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-05-06 19:54:57 -07:00
eisa
extcon	Char/Misc patches for 5.2-rc1 - part 2	2019-05-07 13:39:22 -07:00
firewire	stream_open related patches for Linux 5.2	2019-05-07 12:15:13 -07:00
firmware	Char/Misc patches for 5.2-rc1 - part 2	2019-05-07 13:39:22 -07:00
fmc
fpga
fsi
gnss	Char/Misc patches for 5.2-rc1 - part 2	2019-05-07 13:39:22 -07:00
gpio	pidfd patches for v5.2-rc1	2019-05-07 12:30:24 -07:00
gpu	Merge branch 'work.file' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-05-07 20:34:21 -07:00
hid	stream_open related patches for Linux 5.2	2019-05-07 12:15:13 -07:00
hsi
hv
hwmon	stream_open related patches for Linux 5.2	2019-05-07 12:15:13 -07:00
hwspinlock
hwtracing	Char/Misc patches for 5.2-rc1 - part 2	2019-05-07 13:39:22 -07:00
i2c
i3c	* Fix a shift wrap bug in the core	2019-05-07 08:50:40 -07:00
ide	for-5.2/block-20190507	2019-05-07 18:14:36 -07:00
idle
iio	Staging / IIO driver patches for 5.2-rc1	2019-05-07 13:31:29 -07:00
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
input	*: convert stream-like files from nonseekable_open -> stream_open	2019-05-06 17:46:41 +03:00
interconnect
iommu
ipack
irqchip	Driver core/kobject patches for 5.2-rc1	2019-05-07 13:01:40 -07:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
leds	LED updates for 5.2-rc1.	2019-05-07 18:02:51 -07:00
lightnvm
macintosh
mailbox
mcb
md	for-5.2/block-20190507	2019-05-07 18:14:36 -07:00
media	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
memory
memstick	MMC core:	2019-05-07 12:56:19 -07:00
message
mfd	LED updates for 5.2-rc1.	2019-05-07 18:02:51 -07:00
misc	Char/Misc patches for 5.2-rc1 - part 2	2019-05-07 13:39:22 -07:00
mmc	MMC core:	2019-05-07 12:56:19 -07:00
mtd	Remove Mysterious Macro Intended to Obscure Weird Behaviours (mmiowb())	2019-05-06 16:57:52 -07:00
mux
net	nfp: bpf: fix static check error through tightening shift amount adjustment	2019-05-09 15:54:30 -07:00
nfc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
ntb
nubus
nvdimm	for-5.2/block-20190507	2019-05-07 18:14:36 -07:00
nvme	for-5.2/block-20190507	2019-05-07 18:14:36 -07:00
nvmem
of	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
opp
oprofile
parisc
parport
pci	stream_open related patches for Linux 5.2	2019-05-07 12:15:13 -07:00
pcmcia
perf
phy
pinctrl
platform	*: convert stream-like files from nonseekable_open -> stream_open	2019-05-06 17:46:41 +03:00
pnp
power
powercap
pps
ps3
ptp	ptp_qoriq: fix NULL access if ptp dt node missing	2019-05-09 09:19:26 -07:00
pwm
rapidio
ras
regulator	Merge branch 'regulator-5.2' into regulator-next	2019-05-06 22:52:14 +09:00
remoteproc
reset
rpmsg
rtc	*: convert stream-like files from nonseekable_open -> stream_open	2019-05-06 17:46:41 +03:00
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
sbus
scsi	for-5.2/block-20190507	2019-05-07 18:14:36 -07:00
sfi
sh
siox
slimbus
sn
soc
soundwire
spi	Staging / IIO driver patches for 5.2-rc1	2019-05-07 13:31:29 -07:00
spmi
ssb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
staging	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
target	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2019-05-07 22:03:58 -07:00
tc
tee
thermal
thunderbolt	Char/Misc patches for 5.2-rc1 - part 2	2019-05-07 13:39:22 -07:00
tty	Staging / IIO driver patches for 5.2-rc1	2019-05-07 13:31:29 -07:00
uio
usb	stream_open related patches for Linux 5.2	2019-05-07 12:15:13 -07:00
uwb
vfio
vhost
video
virt
virtio
visorbus
vlynq
vme
w1	Char/Misc patches for 5.2-rc1 - part 2	2019-05-07 13:39:22 -07:00
watchdog	stream_open related patches for Linux 5.2	2019-05-07 12:15:13 -07:00
xen	Merge branch 'stable/for-linus-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb	2019-05-07 18:45:27 -07:00
zorro
Kconfig
Makefile