diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index a3c0214ca934..3b1f0ba02f61 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -4281,6 +4281,11 @@ static int bpf_raw_tp_link_attach(struct bpf_prog *prog, if (!btp) return -ENOENT; + if (prog->sleepable && !tracepoint_is_faultable(btp->tp)) { + bpf_put_raw_tracepoint(btp); + return -EINVAL; + } + link = kzalloc_obj(*link, GFP_USER); if (!link) { err = -ENOMEM; diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 185210b73385..5b4806fdb648 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -19267,6 +19267,12 @@ int bpf_check_attach_target(struct bpf_verifier_log *log, btp = bpf_get_raw_tracepoint(tname); if (!btp) return -EINVAL; + if (prog->sleepable && !tracepoint_is_faultable(btp->tp)) { + bpf_log(log, "Sleepable program cannot attach to non-faultable tracepoint %s\n", + tname); + bpf_put_raw_tracepoint(btp); + return -EINVAL; + } fname = kallsyms_lookup((unsigned long)btp->bpf_func, NULL, NULL, NULL, trace_symbol); bpf_put_raw_tracepoint(btp); @@ -19483,6 +19489,7 @@ static bool can_be_sleepable(struct bpf_prog *prog) case BPF_MODIFY_RETURN: case BPF_TRACE_ITER: case BPF_TRACE_FSESSION: + case BPF_TRACE_RAW_TP: return true; default: return false; @@ -19490,7 +19497,9 @@ static bool can_be_sleepable(struct bpf_prog *prog) } return prog->type == BPF_PROG_TYPE_LSM || prog->type == BPF_PROG_TYPE_KPROBE /* only for uprobes */ || - prog->type == BPF_PROG_TYPE_STRUCT_OPS; + prog->type == BPF_PROG_TYPE_STRUCT_OPS || + prog->type == BPF_PROG_TYPE_RAW_TRACEPOINT || + prog->type == BPF_PROG_TYPE_TRACEPOINT; } static int check_attach_btf_id(struct bpf_verifier_env *env) @@ -19512,7 +19521,7 @@ static int check_attach_btf_id(struct bpf_verifier_env *env) } if (prog->sleepable && !can_be_sleepable(prog)) { - verbose(env, "Only fentry/fexit/fsession/fmod_ret, lsm, iter, uprobe, and struct_ops programs can be sleepable\n"); + verbose(env, "Program of this type cannot be sleepable\n"); return -EINVAL; }