The patch titled
kprobes: bugfix: try_module_get even if calling_mod is NULL
has been added to the -mm tree. Its filename is
kprobes-bugfix-try_module_get-even-if-calling_mod-is-null.patch
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------------------------------------------------------
Subject: kprobes: bugfix: try_module_get even if calling_mod is NULL
From: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Get probed module even if the caller is in the kernel core code.
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Cc: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Cc: Hiroshi Shimamoto <h-shimamoto@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/kprobes.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/kprobes.c~kprobes-bugfix-try_module_get-even-if-calling_mod-is-null kernel/kprobes.c
--- a/kernel/kprobes.c~kprobes-bugfix-try_module_get-even-if-calling_mod-is-null
+++ a/kernel/kprobes.c
@@ -630,7 +630,7 @@ static int __kprobes __register_kprobe(s
* avoid incrementing the module refcount, so as to allow
* unloading of self probing modules.
*/
- if (calling_mod && calling_mod != probed_mod) {
+ if (calling_mod != probed_mod) {
if (unlikely(!try_module_get(probed_mod)))
return -EINVAL;
p->mod_refcounted = 1;
_
Patches currently in -mm which might be from mhiramat@xxxxxxxxxx are
kprobes-bugfix-try_module_get-even-if-calling_mod-is-null.patch
kprobes-indirectly-call-kprobe_target.patch
kprobes-add-tests-for-register_kprobes.patch
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