diff options
| author | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2025-03-27 21:19:54 +0900 |
|---|---|---|
| committer | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2025-03-27 21:19:54 +0900 |
| commit | 57faaa04804ccbf16582f7fc7a6b986fd0c0e78c (patch) | |
| tree | e1e9b170f3d24c35a097a4602f817d262df8158a | |
| parent | 38fec10eb60d687e30c8c6b5420d86e8149f7557 (diff) | |
tracing: probe-events: Log error for exceeding the number of arguments
Add error message when the number of arguments exceeds the limitation.
Link: https://lore.kernel.org/all/174055075075.4079315.10916648136898316476.stgit@mhiramat.tok.corp.google.com/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| -rw-r--r-- | kernel/trace/trace_eprobe.c | 2 | ||||
| -rw-r--r-- | kernel/trace/trace_fprobe.c | 5 | ||||
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 5 | ||||
| -rw-r--r-- | kernel/trace/trace_probe.h | 1 | ||||
| -rw-r--r-- | kernel/trace/trace_uprobe.c | 9 |
5 files changed, 18 insertions, 4 deletions
diff --git a/kernel/trace/trace_eprobe.c b/kernel/trace/trace_eprobe.c index 82fd637cfc19..af9fa0632b57 100644 --- a/kernel/trace/trace_eprobe.c +++ b/kernel/trace/trace_eprobe.c @@ -913,6 +913,8 @@ static int __trace_eprobe_create(int argc, const char *argv[]) } if (argc - 2 > MAX_TRACE_ARGS) { + trace_probe_log_set_index(2); + trace_probe_log_err(0, TOO_MANY_ARGS); ret = -E2BIG; goto error; } diff --git a/kernel/trace/trace_fprobe.c b/kernel/trace/trace_fprobe.c index 985ff98272da..5d7ca80173ea 100644 --- a/kernel/trace/trace_fprobe.c +++ b/kernel/trace/trace_fprobe.c @@ -1199,8 +1199,11 @@ static int trace_fprobe_create_internal(int argc, const char *argv[], argc = new_argc; argv = new_argv; } - if (argc > MAX_TRACE_ARGS) + if (argc > MAX_TRACE_ARGS) { + trace_probe_log_set_index(2); + trace_probe_log_err(0, TOO_MANY_ARGS); return -E2BIG; + } ret = traceprobe_expand_dentry_args(argc, argv, &dbuf); if (ret) diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index d8d5f18a141a..8287b175667f 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -1007,8 +1007,11 @@ static int trace_kprobe_create_internal(int argc, const char *argv[], argc = new_argc; argv = new_argv; } - if (argc > MAX_TRACE_ARGS) + if (argc > MAX_TRACE_ARGS) { + trace_probe_log_set_index(2); + trace_probe_log_err(0, TOO_MANY_ARGS); return -E2BIG; + } ret = traceprobe_expand_dentry_args(argc, argv, &dbuf); if (ret) diff --git a/kernel/trace/trace_probe.h b/kernel/trace/trace_probe.h index 96792bc4b092..854e5668f5ee 100644 --- a/kernel/trace/trace_probe.h +++ b/kernel/trace/trace_probe.h @@ -545,6 +545,7 @@ extern int traceprobe_define_arg_fields(struct trace_event_call *event_call, C(BAD_BTF_TID, "Failed to get BTF type info."),\ C(BAD_TYPE4STR, "This type does not fit for string."),\ C(NEED_STRING_TYPE, "$comm and immediate-string only accepts string type"),\ + C(TOO_MANY_ARGS, "Too many arguments are specified"), \ C(TOO_MANY_EARGS, "Too many entry arguments specified"), #undef C diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index ccc762fbb69c..3386439ec9f6 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -562,8 +562,14 @@ static int __trace_uprobe_create(int argc, const char **argv) if (argc < 2) return -ECANCELED; - if (argc - 2 > MAX_TRACE_ARGS) + + trace_probe_log_init("trace_uprobe", argc, argv); + + if (argc - 2 > MAX_TRACE_ARGS) { + trace_probe_log_set_index(2); + trace_probe_log_err(0, TOO_MANY_ARGS); return -E2BIG; + } if (argv[0][1] == ':') event = &argv[0][2]; @@ -582,7 +588,6 @@ static int __trace_uprobe_create(int argc, const char **argv) return -ECANCELED; } - trace_probe_log_init("trace_uprobe", argc, argv); trace_probe_log_set_index(1); /* filename is the 2nd argument */ *arg++ = '\0'; |