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| author | Alexei Starovoitov <ast@kernel.org> | 2019-01-31 15:40:05 -0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-02-01 20:55:38 +0100 |
| commit | e16d2f1ab96849b4b65e64b82550a7ecdbf405eb (patch) | |
| tree | c5bb1bfee577712f7a0c1312716b2fb573560c74 /kernel/bpf/verifier.c | |
| parent | d83525ca62cf8ebe3271d14c36fb900c294274a2 (diff) | |
| download | lwn-e16d2f1ab96849b4b65e64b82550a7ecdbf405eb.tar.gz lwn-e16d2f1ab96849b4b65e64b82550a7ecdbf405eb.zip | |
bpf: add support for bpf_spin_lock to cgroup local storage
Allow 'struct bpf_spin_lock' to reside inside cgroup local storage.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'kernel/bpf/verifier.c')
| -rw-r--r-- | kernel/bpf/verifier.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 38892bdee651..b63bc77af2d1 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -3089,6 +3089,8 @@ static int check_helper_call(struct bpf_verifier_env *env, int func_id, int insn regs[BPF_REG_0].map_ptr = meta.map_ptr; if (fn->ret_type == RET_PTR_TO_MAP_VALUE) { regs[BPF_REG_0].type = PTR_TO_MAP_VALUE; + if (map_value_has_spin_lock(meta.map_ptr)) + regs[BPF_REG_0].id = ++env->id_gen; } else { regs[BPF_REG_0].type = PTR_TO_MAP_VALUE_OR_NULL; regs[BPF_REG_0].id = ++env->id_gen; |