diff options
| author | Jakub Kicinski | 2023-04-07 18:23:36 -0700 |
|---|---|---|
| committer | Jakub Kicinski | 2023-04-07 18:23:37 -0700 |
| commit | 029294d01907ac4ae7c57bbb122fef2367136ed4 (patch) | |
| tree | b8bd1905ba302e04456250dff22b527b3f7ef958 /arch/arm64 | |
| parent | b9881d9a761a7e078c394ff8e30e1659d74f898f (diff) | |
| parent | 919e659ed12568b5b8ba6c2ffdd82d8d31fc28af (diff) | |
Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:
====================
pull-request: bpf 2023-04-08
We've added 4 non-merge commits during the last 11 day(s) which contain
a total of 5 files changed, 39 insertions(+), 6 deletions(-).
The main changes are:
1) Fix BPF TCP socket iterator to use correct helper for dropping
socket's refcount, that is, sock_gen_put instead of sock_put,
from Martin KaFai Lau.
2) Fix a BTI exception splat in BPF trampoline-generated code on arm64,
from Xu Kuohai.
3) Fix a LongArch JIT error from missing BPF_NOSPEC no-op, from George Guo.
4) Fix dynamic XDP feature detection of veth in xdp_redirect selftest,
from Lorenzo Bianconi.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
selftests/bpf: fix xdp_redirect xdp-features selftest for veth driver
bpf, arm64: Fixed a BTI error on returning to patched function
LoongArch, bpf: Fix jit to skip speculation barrier opcode
bpf: tcp: Use sock_gen_put instead of sock_put in bpf_iter_tcp
====================
Link: https://lore.kernel.org/r/20230407224642.30906-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/net/bpf_jit.h | 4 | ||||
| -rw-r--r-- | arch/arm64/net/bpf_jit_comp.c | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm64/net/bpf_jit.h b/arch/arm64/net/bpf_jit.h index a6acb94ea3d6..c2edadb8ec6a 100644 --- a/arch/arm64/net/bpf_jit.h +++ b/arch/arm64/net/bpf_jit.h @@ -281,4 +281,8 @@ /* DMB */ #define A64_DMB_ISH aarch64_insn_gen_dmb(AARCH64_INSN_MB_ISH) +/* ADR */ +#define A64_ADR(Rd, offset) \ + aarch64_insn_gen_adr(0, offset, Rd, AARCH64_INSN_ADR_TYPE_ADR) + #endif /* _BPF_JIT_H */ diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 62f805f427b7..b26da8efa616 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -1900,7 +1900,8 @@ static int prepare_trampoline(struct jit_ctx *ctx, struct bpf_tramp_image *im, restore_args(ctx, args_off, nargs); /* call original func */ emit(A64_LDR64I(A64_R(10), A64_SP, retaddr_off), ctx); - emit(A64_BLR(A64_R(10)), ctx); + emit(A64_ADR(A64_LR, AARCH64_INSN_SIZE * 2), ctx); + emit(A64_RET(A64_R(10)), ctx); /* store return value */ emit(A64_STR64I(A64_R(0), A64_SP, retval_off), ctx); /* reserve a nop for bpf_tramp_image_put */ |