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Hou Tao e4a41c2c1f bpf, arm64: Use emit_addr_mov_i64() for BPF_PSEUDO_FUNC 
The following error is reported when running "./test_progs -t for_each"
under arm64:

  bpf_jit: multi-func JIT bug 58 != 56
  [...]
  JIT doesn't support bpf-to-bpf calls

The root cause is the size of BPF_PSEUDO_FUNC instruction increases
from 2 to 3 after the address of called bpf-function is settled and
there are two bpf-to-bpf calls in test_pkt_access. The generated
instructions are shown below:

  0x48:  21 00 C0 D2    movz x1, #0x1, lsl #32
  0x4c:  21 00 80 F2    movk x1, #0x1

  0x48:  E1 3F C0 92    movn x1, #0x1ff, lsl #32
  0x4c:  41 FE A2 F2    movk x1, #0x17f2, lsl #16
  0x50:  81 70 9F F2    movk x1, #0xfb84

Fixing it by using emit_addr_mov_i64() for BPF_PSEUDO_FUNC, so
the size of jited image will not change.

Fixes: 69c087ba62 ("bpf: Add bpf_for_each_map_elem() helper")
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211231151018.3781550-1-houtao1@huawei.com
2022-01-05 20:43:08 +01:00
..
alpha futex: Wireup futex_waitv syscall 2021-11-25 14:26:12 +01:00
arc Add linux/cacheflush.h 2021-11-17 10:36:15 -05:00
arm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-12-30 12:12:12 -08:00
arm64 bpf, arm64: Use emit_addr_mov_i64() for BPF_PSEUDO_FUNC 2022-01-05 20:43:08 +01:00
csky csky: fix typo of fpu config macro 2021-12-08 14:15:54 +08:00
h8300 Kbuild updates for v5.16 2021-11-08 09:15:45 -08:00
hexagon hexagon: ignore vmlinux.lds 2021-11-20 10:35:54 -08:00
ia64 futex: Wireup futex_waitv syscall 2021-11-25 14:26:12 +01:00
m68k asm-generic: syscall table updates 2021-11-25 10:41:28 -08:00
microblaze futex: Wireup futex_waitv syscall 2021-11-25 14:26:12 +01:00
mips Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-12-30 12:12:12 -08:00
nds32 Add linux/cacheflush.h 2021-11-17 10:36:15 -05:00
nios2 Add linux/cacheflush.h 2021-11-17 10:36:15 -05:00
openrisc Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-11-10 16:15:54 -08:00
parisc parisc: remove ARCH_DEFCONFIG 2021-12-22 09:02:10 +01:00
powerpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-12-30 12:12:12 -08:00
riscv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-12-30 12:12:12 -08:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-12-31 14:35:40 +00:00
sh asm-generic: syscall table updates 2021-11-25 10:41:28 -08:00
sparc Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-12-10 15:56:13 -08:00
um ethtool: extend ringparam setting/getting API with rx_buf_len 2021-11-22 12:31:49 +00:00
x86 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-12-31 14:35:40 +00:00
xtensa asm-generic: syscall table updates 2021-11-25 10:41:28 -08:00
.gitignore
Kconfig arch: Add generic Kconfig option indicating page size smaller than 64k 2021-11-27 14:34:41 -08:00