diff options
author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-10-11 18:19:17 -0400 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-17 13:41:05 -0700 |
commit | 35fa86e42bf407879a8b496f3dab9535cada813c (patch) | |
tree | b47b8b81966b3b6e347f6c9c89d803b4d9ba5bad /arch/x86 | |
parent | d1de6f689d8204ac66818767707ec140f997c8fd (diff) |
tracing: Get trace_array reference for available_tracers files
commit 194c2c74f5532e62c218adeb8e2b683119503907 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86')
0 files changed, 0 insertions, 0 deletions