diff options
| author | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2026-02-10 17:43:36 +0900 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2026-03-04 07:20:54 -0500 |
| commit | ee93c914826671b0e3c08d1aa26f5d70e500e658 (patch) | |
| tree | e265892a72c8f6ed51853fb24eceae18f34c9b1e | |
| parent | d89b8b17057e16fad4564c71160e68ca549c1b42 (diff) | |
tracing: Fix to set write permission to per-cpu buffer_size_kb
[ Upstream commit f844282deed7481cf2f813933229261e27306551 ]
Since the per-cpu buffer_size_kb file is writable for changing
per-cpu ring buffer size, the file should have the write access
permission.
Cc: stable@vger.kernel.org
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/177071301597.2293046.11683339475076917920.stgit@mhiramat.tok.corp.google.com
Fixes: 21ccc9cd7211 ("tracing: Disable "other" permission bits in the tracefs files")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | kernel/trace/trace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 9795fc7daeb6..3ab3d23b7076 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -8858,7 +8858,7 @@ tracing_init_tracefs_percpu(struct trace_array *tr, long cpu) trace_create_cpu_file("stats", TRACE_MODE_READ, d_cpu, tr, cpu, &tracing_stats_fops); - trace_create_cpu_file("buffer_size_kb", TRACE_MODE_READ, d_cpu, + trace_create_cpu_file("buffer_size_kb", TRACE_MODE_WRITE, d_cpu, tr, cpu, &tracing_entries_fops); #ifdef CONFIG_TRACER_SNAPSHOT |