| Message ID | 164802093635.1732982.4938094876018890866.stgit@devnote2 (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 261608f3105ce65e9fd01919f72ead74dcb9f14d |
| Delegated to: | BPF |
| Headers | show |
| Series | fprobe: Fixes for Sparse and Smatch warnings | expand |
diff --git a/kernel/trace/fprobe.c b/kernel/trace/fprobe.c index 63b2321b22a0..89d9f994ebb0 100644 --- a/kernel/trace/fprobe.c +++ b/kernel/trace/fprobe.c @@ -215,7 +215,7 @@ int register_fprobe(struct fprobe *fp, const char *filter, const char *notfilter * correctly calculate the total number of filtered symbols * from both filter and notfilter. */ - hash = fp->ops.local_hash.filter_hash; + hash = rcu_access_pointer(fp->ops.local_hash.filter_hash); if (WARN_ON_ONCE(!hash)) goto out;
Since ftrace_ops::local_hash::filter_hash field is an __rcu pointer, we have to use rcu_access_pointer() to access it. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> --- kernel/trace/fprobe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)