6 files changed, 24 insertions, 28 deletions

diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h
index 447cbd1bee99..5b480e1d5909 100644
--- a/arch/powerpc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
@@ -149,7 +149,7 @@ do {									      \
 
 #define arch_has_single_step()  (1)
 #define arch_has_block_step()   (!cpu_has_feature(CPU_FTR_601))
-#define ARCH_HAS_USER_SINGLE_STEP_INFO
+#define ARCH_HAS_USER_SINGLE_STEP_REPORT
 
 /*
  * kprobe-based event tracer support
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index c85adb858271..f651fa91cdc9 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -307,12 +307,9 @@ void die(const char *str, struct pt_regs *regs, long err)
 }
 NOKPROBE_SYMBOL(die);
 
-void user_single_step_siginfo(struct task_struct *tsk,
-                                struct pt_regs *regs, siginfo_t *info)
+void user_single_step_report(struct pt_regs *regs)
 {
-        info->si_signo = SIGTRAP;
-        info->si_code = TRAP_TRACE;
-        info->si_addr = (void __user *)regs->nip;
+        force_sig_fault(SIGTRAP, TRAP_TRACE, (void __user *)regs->nip, current);
 }
 
 static void show_signal_msg(int signr, struct pt_regs *regs, int code,
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index 6de1fd3d0097..e353f08b7fe2 100644
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -263,7 +263,7 @@ static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
 #define arch_has_block_step()   (boot_cpu_data.x86 >= 6)
 #endif
 
-#define ARCH_HAS_USER_SINGLE_STEP_INFO
+#define ARCH_HAS_USER_SINGLE_STEP_REPORT
 
 /*
  * When hitting ptrace_stop(), we cannot return using SYSRET because
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index e2ee403865eb..94bd6e89129a 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1382,12 +1382,6 @@ static void fill_sigtrap_info(struct task_struct *tsk,
         info->si_addr = user_mode(regs) ? (void __user *)regs->ip : NULL;
 }
 
-void user_single_step_siginfo(struct task_struct *tsk,
-                                struct pt_regs *regs,
-                                struct siginfo *info)
-{
-        fill_sigtrap_info(tsk, regs, 0, TRAP_BRKPT, info);
-}
 
 void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
                                          int error_code, int si_code)
@@ -1399,3 +1393,8 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
         /* Send us the fake SIGTRAP */
         force_sig_info(SIGTRAP, &info, tsk);
 }
+
+void user_single_step_report(struct pt_regs *regs)
+{
+        send_sigtrap(current, regs, 0, TRAP_BRKPT);
+}
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 4f36431c380b..1de2235511c8 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -336,14 +336,19 @@ static inline void user_enable_block_step(struct task_struct *task)
 extern void user_enable_block_step(struct task_struct *);
 #endif  /* arch_has_block_step */
 
-#ifdef ARCH_HAS_USER_SINGLE_STEP_INFO
-extern void user_single_step_siginfo(struct task_struct *tsk,
-                                struct pt_regs *regs, siginfo_t *info);
+#ifdef ARCH_HAS_USER_SINGLE_STEP_REPORT
+extern void user_single_step_report(struct pt_regs *regs);
 #else
-static inline void user_single_step_siginfo(struct task_struct *tsk,
-                                struct pt_regs *regs, siginfo_t *info)
+static inline void user_single_step_report(struct pt_regs *regs)
 {
-        info->si_signo = SIGTRAP;
+        siginfo_t info;
+        clear_siginfo(&info);
+        info.si_signo = SIGTRAP;
+        info.si_errno = 0;
+        info.si_code = SI_USER;
+        info.si_pid = 0;
+        info.si_uid = 0;
+        force_sig_info(info.si_signo, &info, current);
 }
 #endif
 
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h
index 05589a3e37f4..40b0b4c1bf7b 100644
--- a/include/linux/tracehook.h
+++ b/include/linux/tracehook.h
@@ -123,15 +123,10 @@ static inline __must_check int tracehook_report_syscall_entry(
  */
 static inline void tracehook_report_syscall_exit(struct pt_regs *regs, int step)
 {
-        if (step) {
-                siginfo_t info;
-                clear_siginfo(&info);
-                user_single_step_siginfo(current, regs, &info);
-                force_sig_info(SIGTRAP, &info, current);
-                return;
-        }
-
-        ptrace_report_syscall(regs);
+        if (step)
+                user_single_step_report(regs);
+        else
+                ptrace_report_syscall(regs);
 }
 
 /**