diff options
Diffstat (limited to 'tapsets.cxx')
| -rw-r--r-- | tapsets.cxx | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tapsets.cxx b/tapsets.cxx index bad72091..555a6587 100644 --- a/tapsets.cxx +++ b/tapsets.cxx @@ -3829,7 +3829,13 @@ sdt_query::init_probe_scn() bool sdt_query::get_next_probe() { - // Extract probe info from the .probes section + // Extract probe info from the .probes section, e.g. + // 74657374 5f70726f 62655f32 00000000 test_probe_2.... + // 50524233 00000000 980c2000 00000000 PRB3...... ..... + // 01000000 00000000 00000000 00000000 ................ + // test_probe_2 is probe_name, probe_type is 50524233, + // *probe_name (pbe->name) is 980c2000, probe_arg (pbe->arg) is 1 + // probe_scn_offset is position currently being scanned in .probes while (probe_scn_offset < pdata->d_size) { @@ -3855,6 +3861,8 @@ sdt_query::get_next_probe() probe_scn_offset += sizeof(__uint32_t); probe_scn_offset += probe_scn_offset % sizeof(__uint64_t); pbe = (struct probe_entry*) ((char*)pdata->d_buf + probe_scn_offset); + if (pbe->name == 0) + return false; probe_name = (char*)((char*)pdata->d_buf + pbe->name - (char*)probe_scn_addr); probe_arg = pbe->arg; if (sess.verbose > 4) |