ARM/kprobes: Don't call the ->break_handler() in arm kprobes code
authorMasami Hiramatsu <mhiramat@kernel.org>
Tue, 19 Jun 2018 16:11:53 +0000 (01:11 +0900)
committerIngo Molnar <mingo@kernel.org>
Thu, 21 Jun 2018 10:33:14 +0000 (12:33 +0200)
Don't call the ->break_handler() from the arm kprobes code,
because it was only used by jprobes which got removed.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/lkml/152942471328.15209.10625693210204476080.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/arm/probes/kprobes/core.c

index 23562111c5114d4edc98ccce39ee8c30bbae0d87..3192350f389d1ac228162c3a83de63d0102dad56 100644 (file)
@@ -315,17 +315,6 @@ void __kprobes kprobe_handler(struct pt_regs *regs)
                                reset_current_kprobe();
                        }
                }
-       } else if (cur) {
-               /* We probably hit a jprobe.  Call its break handler. */
-               if (cur->break_handler && cur->break_handler(cur, regs)) {
-                       kcb->kprobe_status = KPROBE_HIT_SS;
-                       singlestep(cur, regs, kcb);
-                       if (cur->post_handler) {
-                               kcb->kprobe_status = KPROBE_HIT_SSDONE;
-                               cur->post_handler(cur, regs, 0);
-                       }
-               }
-               reset_current_kprobe();
        } else {
                /*
                 * The probe was removed and a race is in progress.