Luke Nelson bb9562cf5c arm, bpf: Fix bugs with ALU64 {RSH, ARSH} BPF_K shift by 0 ... The current arm BPF JIT does not correctly compile RSH or ARSH when the immediate shift amount is 0. This causes the "rsh64 by 0 imm" and "arsh64 by 0 imm" BPF selftests to hang the kernel by reaching an instruction the verifier determines to be unreachable. The root cause is in how immediate right shifts are encoded on arm. For LSR and ASR (logical and arithmetic right shift), a bit-pattern of 00000 in the immediate encodes a shift amount of 32. When the BPF immediate is 0, the generated code shifts by 32 instead of the expected behavior (a no-op). This patch fixes the bugs by adding an additional check if the BPF immediate is 0. After the change, the above mentioned BPF selftests pass. Fixes: 39c13c204b ("arm: eBPF JIT compiler") Co-developed-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Luke Nelson <luke.r.nels@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200408181229.10909-1-luke.r.nels@gmail.com		2020-04-09 01:05:53 +02:00
..
boot	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next	2020-03-31 17:29:33 -07:00
common	ARM: sa1111: Fix irq_retrigger callback return value	2020-03-16 15:48:54 +00:00
configs	ARM: socfpga_defconfig: add back DEBUGFS	2020-03-04 08:51:55 -08:00
crypto	crypto: arm/chacha - fix build failured when kernel mode NEON is disabled	2020-01-22 16:21:11 +08:00
include	timekeeping and timer updates:	2020-03-30 18:51:47 -07:00
kernel	CPU (hotplug) updates:	2020-03-30 18:06:39 -07:00
kvm	KVM: Drop kvm_arch_vcpu_setup()	2020-01-27 19:59:28 +01:00
lib	ARM: 8958/1: rename missed uaccess .fixup section	2020-02-21 17:03:21 +00:00
mach-actions
mach-alpine
mach-artpec
mach-asm9260
mach-aspeed	ARM: SoC fixes	2019-09-30 10:04:28 -07:00
mach-at91	ARM: at91: pm: use of_device_id array to find the proper shdwc node	2020-01-10 23:40:31 +01:00
mach-axxia
mach-bcm	ARM: SoC platform updates	2020-02-08 13:55:25 -08:00
mach-berlin
mach-clps711x
mach-cns3xxx
mach-davinci	ARM: SoC: late updates	2020-02-08 14:17:27 -08:00
mach-digicolor
mach-dove
mach-ebsa110
mach-efm32
mach-ep93xx	Merge branch 'spi-5.4' into spi-next	2019-09-15 10:32:06 +01:00
mach-exynos	ARM: SoC platform updates	2020-02-08 13:55:25 -08:00
mach-footbridge	ARM: 8911/1: move pcibios_report_status to <asm/pci.h>	2019-10-27 21:14:40 +00:00
mach-gemini
mach-highbank
mach-hisi	ARM: hisi: drop useless depend on ARCH_MULTI_V7	2019-10-26 15:31:22 +08:00
mach-imx	ARM: imx: build v7_cpu_resume() unconditionally	2020-02-13 21:21:44 +08:00
mach-integrator
mach-iop32x
mach-ixp4xx	ARM/net: ixp4xx: Pass ethernet physical base as resource	2020-01-12 12:59:53 -08:00
mach-keystone
mach-lpc18xx
mach-lpc32xx
mach-mediatek
mach-meson	ARM: meson: Drop unneeded select of COMMON_CLK	2020-02-29 08:16:20 -08:00
mach-milbeaut
mach-mmp	ARM: mmp: do not divide the clock rate	2020-01-06 09:18:50 -08:00
mach-moxart
mach-mv78xx0
mach-mvebu
mach-mxs
mach-nomadik
mach-npcm	ARM: npcm: Bring back GPIOLIB support	2020-02-09 03:44:51 -08:00
mach-nspire
mach-omap1	ARM: OMAP1: drop duplicated dependency on ARCH_OMAP1	2019-11-11 12:30:39 -08:00
mach-omap2	ARM: OMAP2+: Fix compile if CONFIG_HAVE_ARM_SMCCC is not set	2020-02-26 10:49:25 -08:00
mach-orion5x
mach-oxnas
mach-picoxcell
mach-prima2
mach-pxa	USB/Thunderbolt/PHY driver updates for 5.6-rc1	2020-01-29 10:09:44 -08:00
mach-qcom
mach-rda
mach-realview
mach-rockchip
mach-rpc
mach-s3c24xx	ARM: s3c24xx: Switch to atomic pwm API in rx1950	2020-01-21 20:56:47 +01:00
mach-s3c64xx	ARM: SoC platform updates	2020-02-08 13:55:25 -08:00
mach-s5pv210
mach-sa1100
mach-shmobile	remove ioremap_nocache and devm_ioremap_nocache	2020-01-06 09:45:59 +01:00
mach-socfpga	arm: socfpga: execute cold reboot by default	2019-11-22 12:12:10 -06:00
mach-spear
mach-sti
mach-stm32
mach-sunxi	ARM: sunxi: Fix CPU powerdown on A83T	2019-10-29 09:09:56 +01:00
mach-tango
mach-tegra	ARM: tegra: Use clk_m CPU on Tegra124 LP1 resume	2020-01-08 12:58:46 +01:00
mach-u300	pinctrl: Allow modules to use pinctrl_[un]register_mappings	2019-12-30 14:27:17 +01:00
mach-uniphier
mach-ux500	mfd: db8500-prcmu: Support U8420-sysclk firmware	2019-11-11 08:45:04 +00:00
mach-versatile
mach-vexpress	ARM: vexpress: Set-up shared OPP table instead of individual for each CPU	2019-12-09 11:52:50 +00:00
mach-vt8500
mach-zx
mach-zynq	ARM: zynq: use physical cpuid in zynq_slcr_cpu_stop/start	2020-01-08 15:21:09 +01:00
mm	lib/vdso: Cleanup clock mode storage leftovers	2020-02-17 20:12:17 +01:00
net	arm, bpf: Fix bugs with ALU64 {RSH, ARSH} BPF_K shift by 0	2020-04-09 01:05:53 +02:00
nwfpe
oprofile
plat-omap	dmaengine: ti: omap-dma: Configure global priority register directly	2019-12-30 09:45:25 -08:00
plat-orion
plat-pxa	spi: pxa2xx: No need to keep pointer to platform device	2019-10-18 18:24:50 +01:00
plat-samsung	ARM: samsung: Rename Samsung and Exynos to lowercase	2020-01-07 20:44:22 +01:00
plat-versatile
probes
tools	threads-v5.6	2020-01-29 19:38:34 -08:00
vdso	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
vfp
xen	dma-mapping updates for 5.5-rc1	2019-11-28 11:16:43 -08:00
Kconfig	ARM/arm64: vdso: Use common vdso clock mode storage	2020-02-17 20:12:16 +01:00
Kconfig-nommu
Kconfig.debug	ARM: debug-ll: select DEBUG_AT91_RM9200_DBGU for sam9x60	2019-12-10 00:45:30 +01:00
Makefile	ARM: 8961/2: Fix Kbuild issue caused by per-task stack protector GCC plugin	2020-02-21 17:03:22 +00:00