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bpf: fix possible file descriptor leaks in verifier #6671

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bpf: fix possible file descriptor leaks in verifier #6671

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3 changes: 3 additions & 0 deletions kernel/bpf/verifier.c
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Expand Up @@ -18383,15 +18383,18 @@ static int resolve_pseudo_ldimm64(struct bpf_verifier_env *env)
}
if (!env->prog->jit_requested) {
verbose(env, "JIT is required to use arena\n");
fdput(f);
return -EOPNOTSUPP;
}
if (!bpf_jit_supports_arena()) {
verbose(env, "JIT doesn't support arena\n");
fdput(f);
return -EOPNOTSUPP;
}
env->prog->aux->arena = (void *)map;
if (!bpf_arena_get_user_vm_start(env->prog->aux->arena)) {
verbose(env, "arena's user address must be set via map_extra or mmap()\n");
fdput(f);
return -EINVAL;
}
}
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