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| author | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2022-08-01 11:32:15 +0900 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-08-02 15:22:55 -0400 |
| commit | 2f63e5d2e391837c70741311b5b70d2fbd15d138 (patch) | |
| tree | 6ce3c7fa2c70550023c9797025cf36b072e202cc /kernel/trace/trace_eprobe.c | |
| parent | 95522f0b18a059afa5aca036aa454c98beb553b5 (diff) | |
| download | linux-stable-2f63e5d2e391837c70741311b5b70d2fbd15d138.tar.gz linux-stable-2f63e5d2e391837c70741311b5b70d2fbd15d138.tar.bz2 linux-stable-2f63e5d2e391837c70741311b5b70d2fbd15d138.zip | |
tracing/eprobe: Show syntax error logs in error_log file
Show the syntax errors for event probes in error_log file as same as
other dynamic events, so that user can understand what is the problem.
Link: https://lkml.kernel.org/r/165932113556.2850673.3483079297896607612.stgit@devnote2
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_eprobe.c')
| -rw-r--r-- | kernel/trace/trace_eprobe.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/trace/trace_eprobe.c b/kernel/trace/trace_eprobe.c index a30f21499e81..4a0e9d927443 100644 --- a/kernel/trace/trace_eprobe.c +++ b/kernel/trace/trace_eprobe.c @@ -839,8 +839,11 @@ static int trace_eprobe_tp_update_arg(struct trace_eprobe *ep, const char *argv[ if (ret) return ret; - if (ep->tp.args[i].code->op == FETCH_OP_TP_ARG) + if (ep->tp.args[i].code->op == FETCH_OP_TP_ARG) { ret = trace_eprobe_tp_arg_update(ep, i); + if (ret) + trace_probe_log_err(0, BAD_ATTACH_ARG); + } return ret; } @@ -880,8 +883,10 @@ static int __trace_eprobe_create(int argc, const char *argv[]) trace_probe_log_set_index(1); sys_event = argv[1]; ret = traceprobe_parse_event_name(&sys_event, &sys_name, buf2, 0); - if (!sys_event || !sys_name) + if (!sys_event || !sys_name) { + trace_probe_log_err(0, NO_EVENT_INFO); goto parse_error; + } if (!event) { strscpy(buf1, argv[1], MAX_EVENT_NAME_LEN); @@ -896,6 +901,8 @@ static int __trace_eprobe_create(int argc, const char *argv[]) if (IS_ERR(ep)) { ret = PTR_ERR(ep); + if (ret == -ENODEV) + trace_probe_log_err(0, BAD_ATTACH_EVENT); /* This must return -ENOMEM or missing event, else there is a bug */ WARN_ON_ONCE(ret != -ENOMEM && ret != -ENODEV); ep = NULL; |