diff options
| author | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2026-06-01 23:35:21 +0900 |
|---|---|---|
| committer | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2026-06-01 23:35:21 +0900 |
| commit | 4304c8165281fe730b6861d37a30b567d3c57832 (patch) | |
| tree | a8b8c203a3decaacf43cc85dcdfb53ea45d84c24 /kernel | |
| parent | 85e0f27dd1396307913ffc5745b0c05137e9beac (diff) | |
tracing/probes: Ensure the uprobe buffer size is bigger than event size
Add BUILD_BUG_ON() to ensure the uprobe per-CPU working buffer
size is bigger than the event size.
Link: https://lore.kernel.org/all/177849383209.8038.1902170479780501237.stgit@devnote2/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_uprobe.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index 2cabf8a23ec5..c5ee7920dec6 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -979,6 +979,7 @@ static struct uprobe_cpu_buffer *prepare_uprobe_buffer(struct trace_uprobe *tu, ucb = uprobe_buffer_get(); ucb->dsize = tu->tp.size + dsize; + BUILD_BUG_ON(MAX_UCB_BUFFER_SIZE < MAX_PROBE_EVENT_SIZE); if (WARN_ON_ONCE(ucb->dsize > MAX_UCB_BUFFER_SIZE)) { ucb->dsize = MAX_UCB_BUFFER_SIZE; dsize = MAX_UCB_BUFFER_SIZE - tu->tp.size; |