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| author | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-09-07 04:47:13 +0200 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-09-07 22:38:53 +0200 |
| commit | 7d660c9b2bc95107f90a9f4c4759be85309a6550 (patch) | |
| tree | 7464736c2035613262ca7055990daa8384baf5d0 /crypto/lrw.c | |
| parent | tracing: Increase trace array ref count on enable and filter files (diff) | |
| download | linux-7d660c9b2bc95107f90a9f4c4759be85309a6550.tar.xz linux-7d660c9b2bc95107f90a9f4c4759be85309a6550.zip | |
tracing: Have tracing_max_latency inc the trace array ref count
The tracing_max_latency file points to the trace_array max_latency field.
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 tracing_max_latency is opened.
Link: https://lkml.kernel.org/r/20230907024803.666889383@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: 8530dec63e7b4 ("tracing: Add tracing_check_open_get_tr()")
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 'crypto/lrw.c')
0 files changed, 0 insertions, 0 deletions