tracing: Have event inject files inc the trace array ref count

stable inclusion
from stable-v5.10.198
commit 9b65bff30a61ee538b197fd147135b687b915b4d
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I90MN1
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9b65bff30a61ee538b197fd147135b687b915b4d

--------------------------------

[ Upstream commit e5c624f0 ]

The event inject files add events for a specific trace array. For an
instance, if the file is opened and the instance is deleted, reading or
writing to the file will cause a use after free.

Up the ref count of the trace_array when a event inject file is opened.

Link: https://lkml.kernel.org/r/20230907024804.292337868@goodmis.org
Link: https://lore.kernel.org/all/1cb3aee2-19af-c472-e265-05176fe9bd84@huawei.com/



Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Zheng Yejian <zhengyejian1@huawei.com>
Fixes: 6c3edaf9 ("tracing: Introduce trace event injection")
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
(cherry picked from commit d21739ab)