diff options
| author | Ondrej Mosnacek | 2023-05-03 16:01:14 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-05-11 23:03:04 +0900 |
| commit | d79d3430e174419b7231916e8facfb16db056609 (patch) | |
| tree | 317d685daa5ec51c60079f8473f85c4fcecea1d5 /kernel | |
| parent | 339dd534f21d6cfb9d5566ed863d55663bfef5fe (diff) | |
tracing: Fix permissions for the buffer_percent file
commit 4f94559f40ad06d627c0fdfc3319cec778a2845b upstream.
This file defines both read and write operations, yet it is being
created as read-only. This means that it can't be written to without the
CAP_DAC_OVERRIDE capability. Fix the permissions to allow root to write
to it without the need to override DAC perms.
Link: https://lore.kernel.org/linux-trace-kernel/20230503140114.3280002-1-omosnace@redhat.com
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: 03329f993978 ("tracing: Add tracefs file buffer_percentage")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -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 3360d638071a..5c1087df2f1c 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -9619,7 +9619,7 @@ init_tracer_tracefs(struct trace_array *tr, struct dentry *d_tracer) tr->buffer_percent = 50; - trace_create_file("buffer_percent", TRACE_MODE_READ, d_tracer, + trace_create_file("buffer_percent", TRACE_MODE_WRITE, d_tracer, tr, &buffer_percent_fops); create_trace_options_dir(tr); |