diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2020-09-10 17:55:05 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-01 13:18:23 +0200 |
| commit | c4ab0a8370932db7d9d85fd8fea059449027307e (patch) | |
| tree | fd36089d0dd065484323f49780584da021de107b /include | |
| parent | 3995f7a60feceba6c8f762f4aff3184f90a1291d (diff) | |
kprobes: tracing/kprobes: Fix to kill kprobes on initmem after boot
commit 82d083ab60c3693201c6f5c7a5f23a6ed422098d upstream.
Since kprobe_event= cmdline option allows user to put kprobes on the
functions in initmem, kprobe has to make such probes gone after boot.
Currently the probes on the init functions in modules will be handled
by module callback, but the kernel init text isn't handled.
Without this, kprobes may access non-exist text area to disable or
remove it.
Link: https://lkml.kernel.org/r/159972810544.428528.1839307531600646955.stgit@devnote2
Fixes: 970988e19eb0 ("tracing/kprobe: Add kprobe_event= boot parameter")
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kprobes.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 645fd401c856..a60488867dd0 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -369,6 +369,8 @@ void unregister_kretprobes(struct kretprobe **rps, int num); void kprobe_flush_task(struct task_struct *tk); void recycle_rp_inst(struct kretprobe_instance *ri, struct hlist_head *head); +void kprobe_free_init_mem(void); + int disable_kprobe(struct kprobe *kp); int enable_kprobe(struct kprobe *kp); @@ -426,6 +428,9 @@ static inline void unregister_kretprobes(struct kretprobe **rps, int num) static inline void kprobe_flush_task(struct task_struct *tk) { } +static inline void kprobe_free_init_mem(void) +{ +} static inline int disable_kprobe(struct kprobe *kp) { return -ENOSYS; |