diff options
Diffstat (limited to 'kernel/bpf/fixups.c')
| -rw-r--r-- | kernel/bpf/fixups.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/bpf/fixups.c b/kernel/bpf/fixups.c index 206cc9a614a9..b2fa7e8bedf3 100644 --- a/kernel/bpf/fixups.c +++ b/kernel/bpf/fixups.c @@ -590,6 +590,22 @@ static int bpf_adj_linfo_after_remove(struct bpf_verifier_env *env, u32 off, return 0; } +/* Clean up dynamically allocated fields of aux data for instructions [start, ...] */ +void bpf_clear_insn_aux_data(struct bpf_verifier_env *env, int start, int len) +{ + struct bpf_insn_aux_data *aux_data = env->insn_aux_data; + int end = start + len; + int i; + + for (i = start; i < end; i++) { + if (aux_data[i].loop) { + kvfree(aux_data[i].loop->exits); + kvfree(aux_data[i].loop); + aux_data[i].loop = NULL; + } + } +} + static int verifier_remove_insns(struct bpf_verifier_env *env, u32 off, u32 cnt) { struct bpf_insn_aux_data *aux_data = env->insn_aux_data; @@ -602,6 +618,8 @@ static int verifier_remove_insns(struct bpf_verifier_env *env, u32 off, u32 cnt) if (bpf_prog_is_offloaded(env->prog->aux)) bpf_prog_offload_remove_insns(env, off, cnt); + bpf_clear_insn_aux_data(env, off, cnt); + err = bpf_remove_insns(env->prog, off, cnt); if (err) return err; |