diff options
Diffstat (limited to 'kernel/kprobes.c')
| -rw-r--r-- | kernel/kprobes.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 3995f546d0f3..06f58309fed2 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -915,7 +915,7 @@ static struct kprobe *alloc_aggr_kprobe(struct kprobe *p) #ifdef CONFIG_KPROBES_ON_FTRACE static struct ftrace_ops kprobe_ftrace_ops __read_mostly = { .func = kprobe_ftrace_handler, - .flags = FTRACE_OPS_FL_SAVE_REGS, + .flags = FTRACE_OPS_FL_SAVE_REGS | FTRACE_OPS_FL_IPMODIFY, }; static int kprobe_ftrace_enabled; @@ -1410,16 +1410,10 @@ static inline int check_kprobe_rereg(struct kprobe *p) return ret; } -static int check_kprobe_address_safe(struct kprobe *p, - struct module **probed_mod) +int __weak arch_check_ftrace_location(struct kprobe *p) { - int ret = 0; unsigned long ftrace_addr; - /* - * If the address is located on a ftrace nop, set the - * breakpoint to the following instruction. - */ ftrace_addr = ftrace_location((unsigned long)p->addr); if (ftrace_addr) { #ifdef CONFIG_KPROBES_ON_FTRACE @@ -1431,7 +1425,17 @@ static int check_kprobe_address_safe(struct kprobe *p, return -EINVAL; #endif } + return 0; +} +static int check_kprobe_address_safe(struct kprobe *p, + struct module **probed_mod) +{ + int ret; + + ret = arch_check_ftrace_location(p); + if (ret) + return ret; jump_label_lock(); preempt_disable(); |