Ilya Leoshkevich ddf58efd05 s390/bpf: Fix optimizing out zero-extensions ...

commit db7bee6538 upstream.

Currently the JIT completely removes things like `reg32 += 0`,
however, the BPF_ALU semantics requires the target register to be
zero-extended in such cases.

Fix by optimizing out only the arithmetic operation, but not the
subsequent zero-extension.

Reported-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Fixes: 0546231057 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-09-26 13:39:46 +02:00

..

alpha

alpha: Send stop IPI to send to online CPUs

2021-08-12 13:19:45 +02:00

arc

ARC: export clear_user_page() for modules

2021-09-22 11:48:13 +02:00

arm

ARM: tegra: tamonten: Fix UART pad setting

2021-09-22 11:48:07 +02:00

arm64

arm64/sve: Use correct size when reinitialising SVE state

2021-09-22 11:48:10 +02:00

c6x

kbuild: rename LDFLAGS to KBUILD_LDFLAGS

2018-08-24 08:22:08 +09:00

h8300

h8300: fix PREEMPTION build, TI_PRE_COUNT undefined

2021-02-23 15:00:58 +01:00

hexagon

hexagon: use common DISCARDS macro

2021-07-20 16:16:13 +02:00

ia64

ia64: mca_drv: fix incorrect array size calculation

2021-07-20 16:15:46 +02:00

m68k

m68k: emu: Fix invalid free in nfeth_cleanup()

2021-09-22 11:47:50 +02:00

microblaze

microblaze: Prevent the overflow of the start

2020-02-24 08:34:53 +01:00

mips

MIPS: Malta: fix alignment of the devicetree buffer

2021-09-22 11:48:02 +02:00

nds32

nds32: fix up stack guard gap

2021-07-28 11:13:51 +02:00

nios2

nios2: ksyms: Add missing symbol exports

2020-01-27 14:50:30 +01:00

openrisc

openrisc: don't printk() unconditionally

2021-09-22 11:48:01 +02:00

parisc

parisc: fix crash with signals and alloca

2021-09-22 11:48:09 +02:00

powerpc

powerpc/stacktrace: Include linux/delay.h

2021-09-22 11:48:01 +02:00

riscv

riscv: Workaround mcount name prior to clang-13

2021-05-22 10:59:49 +02:00

s390

s390/bpf: Fix optimizing out zero-extensions

2021-09-26 13:39:46 +02:00

sh

sh: dma: fix kconfig dependency for G2_DMA

2021-01-27 11:05:42 +01:00

sparc

bpf: Introduce BPF nospec instruction for mitigating Spectre v4

2021-09-22 11:47:58 +02:00

um

um: fix error return code in winch_tramp()

2021-07-20 16:16:13 +02:00

unicore32

mm: convert return type of handle_mm_fault() caller to vm_fault_t

2018-08-17 16:20:28 -07:00

x86

x86/mm: Fix kern_addr_valid() to cope with existing but not present entries

2021-09-22 11:48:10 +02:00

xtensa

xtensa: ISS: don't panic in rs_init

2021-09-22 11:48:05 +02:00

.gitignore

…

Kconfig

mm: fix exec activate_mm vs TLB shootdown and lazy tlb switching race

2020-11-05 11:08:38 +01:00