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| author | Li Huafei <lihuafei1@huawei.com> | 2024-10-24 23:59:17 +0800 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2024-10-24 22:26:06 -0400 |
| commit | bd3734db86e01e20dd239a40b419059a0ce9c901 (patch) | |
| tree | b24f7bb0925bc56f8c0b40b005ee3f8d5aa276f0 /rust/helpers/task.c | |
| parent | fae4078c289a2f24229c0de652249948b1cd6bdb (diff) | |
| download | linux-bd3734db86e01e20dd239a40b419059a0ce9c901.tar.gz linux-bd3734db86e01e20dd239a40b419059a0ce9c901.tar.bz2 linux-bd3734db86e01e20dd239a40b419059a0ce9c901.zip | |
fgraph: Fix missing unlock in register_ftrace_graph()
Use guard(mutex)() to acquire and automatically release ftrace_lock,
fixing the issue of not unlocking when calling cpuhp_setup_state()
fails.
Fixes smatch warning:
kernel/trace/fgraph.c:1317 register_ftrace_graph() warn: inconsistent returns '&ftrace_lock'.
Link: https://lore.kernel.org/20241024155917.1019580-1-lihuafei1@huawei.com
Fixes: 2c02f7375e65 ("fgraph: Use CPU hotplug mechanism to initialize idle shadow stacks")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202410220121.wxg0olfd-lkp@intel.com/
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Li Huafei <lihuafei1@huawei.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'rust/helpers/task.c')
0 files changed, 0 insertions, 0 deletions