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author | Takashi Iwai <tiwai@suse.de> | 2017-10-05 15:08:57 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2017-10-05 15:08:57 +0200 |
commit | 3a9fce327ff9cabf7f89d3f20616a83af28393da (patch) | |
tree | c516d3e7023e7fe2dc8d4cf60e2ec03f3c9b5958 /kernel/bpf/verifier.c | |
parent | e195a331c4124a6527e5e1b6fbd93a6b4a984d7b (diff) | |
parent | 394ca81cb4c1518e9463fe342fb1ae8a9f46a82d (diff) |
Merge branch 'topic/timer-api' into for-next
Diffstat (limited to 'kernel/bpf/verifier.c')
-rw-r--r-- | kernel/bpf/verifier.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 799b2451ef2d..b914fbe1383e 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -4205,7 +4205,12 @@ static int fixup_bpf_calls(struct bpf_verifier_env *env) } if (insn->imm == BPF_FUNC_redirect_map) { - u64 addr = (unsigned long)prog; + /* Note, we cannot use prog directly as imm as subsequent + * rewrites would still change the prog pointer. The only + * stable address we can use is aux, which also works with + * prog clones during blinding. + */ + u64 addr = (unsigned long)prog->aux; struct bpf_insn r4_ld[] = { BPF_LD_IMM64(BPF_REG_4, addr), *insn, |