diff options
| author |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-10-11 18:19:17 -0400 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-10-12 20:40:50 -0400 |
| commit | 194c2c74f5532e62c218adeb8e2b683119503907 (patch) | |
| tree | 968137a7e069521734daacde26c23244ca1c2089 /kernel/trace/trace.h | |
| parent | ftrace: Get a reference counter for the trace_array on filter files (diff) | |
| download | wireguard-linux-194c2c74f5532e62c218adeb8e2b683119503907.tar.xz wireguard-linux-194c2c74f5532e62c218adeb8e2b683119503907.zip | |
tracing: Get trace_array reference for available_tracers files
As instances may have different tracers available, we need to look at the
trace_array descriptor that shows the list of the available tracers for the
instance. But there's a race between opening the file and an admin
deleting the instance. The trace_array_get() needs to be called before
accessing the trace_array.
Cc: stable@vger.kernel.org
Fixes: 607e2ea167e56 ("tracing: Set up infrastructure to allow tracers for instances")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.h')
0 files changed, 0 insertions, 0 deletions