diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-08-18 16:57:43 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-09-01 10:58:04 +0300 |
| commit | 6333e8f73b834f54e395a056e6002403f0862c51 (patch) | |
| tree | e347bbf8a19d2efcdae91fdd8338c8b175ce4cd5 /include/linux/static_call.h | |
| parent | 9183c3f9ed710a8edf1a61e8a96d497258d26e08 (diff) | |
| download | linux-6333e8f73b834f54e395a056e6002403f0862c51.tar.xz | |
static_call: Avoid kprobes on inline static_call()s
Similar to how we disallow kprobes on any other dynamic text
(ftrace/jump_label) also disallow kprobes on inline static_call()s.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200818135804.744920586@infradead.org
Diffstat (limited to 'include/linux/static_call.h')
| -rw-r--r-- | include/linux/static_call.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/static_call.h b/include/linux/static_call.h index 0d7f9efaa3b2..6f62ceda7dd9 100644 --- a/include/linux/static_call.h +++ b/include/linux/static_call.h @@ -110,6 +110,7 @@ struct static_call_key { extern void __static_call_update(struct static_call_key *key, void *tramp, void *func); extern int static_call_mod_init(struct module *mod); +extern int static_call_text_reserved(void *start, void *end); #define DEFINE_STATIC_CALL(name, _func) \ DECLARE_STATIC_CALL(name, _func); \ @@ -153,6 +154,11 @@ void __static_call_update(struct static_call_key *key, void *tramp, void *func) cpus_read_unlock(); } +static inline int static_call_text_reserved(void *start, void *end) +{ + return 0; +} + #define EXPORT_STATIC_CALL(name) \ EXPORT_SYMBOL(STATIC_CALL_KEY(name)); \ EXPORT_SYMBOL(STATIC_CALL_TRAMP(name)) @@ -182,6 +188,11 @@ void __static_call_update(struct static_call_key *key, void *tramp, void *func) WRITE_ONCE(key->func, func); } +static inline int static_call_text_reserved(void *start, void *end) +{ + return 0; +} + #define EXPORT_STATIC_CALL(name) EXPORT_SYMBOL(STATIC_CALL_KEY(name)) #define EXPORT_STATIC_CALL_GPL(name) EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name)) |