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| author | Ondrej Mosnacek <omosnace@redhat.com> | 2023-05-03 16:01:14 +0200 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-05-03 12:45:00 -0400 |
| commit | 4f94559f40ad06d627c0fdfc3319cec778a2845b (patch) | |
| tree | e3bb171d8e0b50f44a28d78f8b422f53bcb8781c | |
| parent | 675751bb20634f981498c7d66161584080cc061e (diff) | |
| download | next-fixes-4f94559f40ad06d627c0fdfc3319cec778a2845b.tar.gz | |
tracing: Fix permissions for the buffer_percent file
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>
| -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 076d893d296596..b9be1af23a73f4 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -9660,7 +9660,7 @@ 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); |