diff options
| author | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-09-06 22:47:16 -0400 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-09-07 16:38:54 -0400 |
| commit | e5c624f027ac74f97e97c8f36c69228ac9f1102d (patch) | |
| tree | 2ade5518e683c2176ce61199ecb862d5c50663fb /kernel/trace/trace_events_inject.c | |
| parent | 7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838 (diff) | |
tracing: Have event inject files inc the trace array ref count
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: 6c3edaf9fd6a ("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>
Diffstat (limited to 'kernel/trace/trace_events_inject.c')
| -rw-r--r-- | kernel/trace/trace_events_inject.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace_events_inject.c b/kernel/trace/trace_events_inject.c index abe805d471eb..8650562bdaa9 100644 --- a/kernel/trace/trace_events_inject.c +++ b/kernel/trace/trace_events_inject.c @@ -328,7 +328,8 @@ event_inject_read(struct file *file, char __user *buf, size_t size, } const struct file_operations event_inject_fops = { - .open = tracing_open_generic, + .open = tracing_open_file_tr, .read = event_inject_read, .write = event_inject_write, + .release = tracing_release_file_tr, }; |