From: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Subject: [PATCH 03/10] tracing/probes: Remove redundant bounds check in trace_probe_compare_arg_type()
Date: Mon, 20 Jul 2026 19:43:57 +0900 [thread overview]
Message-ID: <178454423769.296567.6694636865644203423.stgit@devnote2> (raw)
In-Reply-To: <178454420994.296567.10239174745865301350.stgit@devnote2>
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
In trace_probe_compare_arg_type(), prior to entering the comparison loop,
a->nr_args and b->nr_args are checked for equality. Since the loop
condition is i < a->nr_args, i is guaranteed to be less than b->nr_args
inside the loop.
Remove the redundant (b->nr_args <= i) check.
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
kernel/trace/trace_probe.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index 7568f5e68de7..91ba4490937b 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -2770,10 +2770,9 @@ int trace_probe_compare_arg_type(struct trace_probe *a, struct trace_probe *b)
return b->nr_args + 1;
for (i = 0; i < a->nr_args; i++) {
- if ((b->nr_args <= i) ||
- ((a->args[i].type != b->args[i].type) ||
- (a->args[i].count != b->args[i].count) ||
- strcmp(a->args[i].name, b->args[i].name)))
+ if ((a->args[i].type != b->args[i].type) ||
+ (a->args[i].count != b->args[i].count) ||
+ strcmp(a->args[i].name, b->args[i].name))
return i + 1;
}
next prev parent reply other threads:[~2026-07-20 10:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-20 10:43 [PATCH 00/10] tracing/probes: Cleanup probe event code Masami Hiramatsu (Google)
2026-07-20 10:43 ` [PATCH 01/10] tracing/probes: Remove duplicate MAX_ARRAY_LEN macro definition Masami Hiramatsu (Google)
2026-07-20 10:43 ` [PATCH 02/10] tracing/probes: Remove redundant boolean conversion in trace_probe_has_single_file() Masami Hiramatsu (Google)
2026-07-20 10:43 ` Masami Hiramatsu (Google) [this message]
2026-07-20 10:44 ` [PATCH 04/10] tracing/probes: Remove unused parameter from parse_probe_var_retval() Masami Hiramatsu (Google)
2026-07-20 10:44 ` [PATCH 05/10] tracing/probes: Cleanup pointer arithmetic in store_trace_entry_data() Masami Hiramatsu (Google)
2026-07-20 10:44 ` [PATCH 06/10] tracing/probes: Simplify BTF_KIND_PTR case in fetch_type_from_btf_type() Masami Hiramatsu (Google)
2026-07-20 10:44 ` [PATCH 07/10] tracing/fprobe: Remove redundant snprintf in trace_fprobe_match_command_head() Masami Hiramatsu (Google)
2026-07-20 10:44 ` [PATCH 08/10] tracing/fprobe: Remove redundant memset in fentry_perf_func() Masami Hiramatsu (Google)
2026-07-20 10:44 ` [PATCH 09/10] tracing/kprobe: Remove redundant memset in kprobe_perf_func() Masami Hiramatsu (Google)
2026-07-20 10:45 ` [PATCH 10/10] tracing/probes: Fix extra whitespace in trace_probe_kernel.h Masami Hiramatsu (Google)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=178454423769.296567.6694636865644203423.stgit@devnote2 \
--to=mhiramat@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=mathieu.desnoyers@efficios.com \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.