projects
/
platform
/
kernel
/
linux-starfive.git
/ commitdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
| commitdiff |
tree
raw
|
patch
| inline |
side by side
(parent:
9052e4e
)
fprobe: Fix sparse warning for acccessing __rcu ftrace_hash
author
Masami Hiramatsu
<mhiramat@kernel.org>
Wed, 23 Mar 2022 07:35:36 +0000
(16:35 +0900)
committer
Alexei Starovoitov
<ast@kernel.org>
Tue, 29 Mar 2022 02:05:40 +0000
(19:05 -0700)
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>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link:
https://lore.kernel.org/bpf/164802093635.1732982.4938094876018890866.stgit@devnote2
kernel/trace/fprobe.c
patch
|
blob
|
history
diff --git
a/kernel/trace/fprobe.c
b/kernel/trace/fprobe.c
index
63b2321
..
89d9f99
100644
(file)
--- 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;