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| author | David S. Miller <davem@davemloft.net> | 2020-06-13 15:28:08 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-13 15:28:08 -0700 |
| commit | fa7566a0d68f8467846cba8ec29f1551b0a42de9 (patch) | |
| tree | c520797b309d68cacd4bb9089473af7bf8644f07 /kernel/bpf/syscall.c | |
| parent | bf97bac9dc6481e9f68992e52bed5cc4b210e636 (diff) | |
| parent | 29fcb05bbf1a7008900bb9bee347bdbfc7171036 (diff) | |
| download | linux-fa7566a0d68f8467846cba8ec29f1551b0a42de9.tar.gz linux-fa7566a0d68f8467846cba8ec29f1551b0a42de9.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:
====================
pull-request: bpf 2020-06-12
The following pull-request contains BPF updates for your *net* tree.
We've added 26 non-merge commits during the last 10 day(s) which contain
a total of 27 files changed, 348 insertions(+), 93 deletions(-).
The main changes are:
1) sock_hash accounting fix, from Andrey.
2) libbpf fix and probe_mem sanitizing, from Andrii.
3) sock_hash fixes, from Jakub.
4) devmap_val fix, from Jesper.
5) load_bytes_relative fix, from YiFei.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/syscall.c')
| -rw-r--r-- | kernel/bpf/syscall.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 4d530b1d5683..e9a3ebc00e08 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -3158,6 +3158,7 @@ static struct bpf_insn *bpf_insn_prepare_dump(const struct bpf_prog *prog) struct bpf_insn *insns; u32 off, type; u64 imm; + u8 code; int i; insns = kmemdup(prog->insnsi, bpf_prog_insn_size(prog), @@ -3166,21 +3167,27 @@ static struct bpf_insn *bpf_insn_prepare_dump(const struct bpf_prog *prog) return insns; for (i = 0; i < prog->len; i++) { - if (insns[i].code == (BPF_JMP | BPF_TAIL_CALL)) { + code = insns[i].code; + + if (code == (BPF_JMP | BPF_TAIL_CALL)) { insns[i].code = BPF_JMP | BPF_CALL; insns[i].imm = BPF_FUNC_tail_call; /* fall-through */ } - if (insns[i].code == (BPF_JMP | BPF_CALL) || - insns[i].code == (BPF_JMP | BPF_CALL_ARGS)) { - if (insns[i].code == (BPF_JMP | BPF_CALL_ARGS)) + if (code == (BPF_JMP | BPF_CALL) || + code == (BPF_JMP | BPF_CALL_ARGS)) { + if (code == (BPF_JMP | BPF_CALL_ARGS)) insns[i].code = BPF_JMP | BPF_CALL; if (!bpf_dump_raw_ok()) insns[i].imm = 0; continue; } + if (BPF_CLASS(code) == BPF_LDX && BPF_MODE(code) == BPF_PROBE_MEM) { + insns[i].code = BPF_LDX | BPF_SIZE(code) | BPF_MEM; + continue; + } - if (insns[i].code != (BPF_LD | BPF_IMM | BPF_DW)) + if (code != (BPF_LD | BPF_IMM | BPF_DW)) continue; imm = ((u64)insns[i + 1].imm << 32) | (u32)insns[i].imm; |