1 files changed, 32 insertions, 29 deletions

diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index aa90da08bf6..c13c9f25d83 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -14,6 +14,7 @@
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/errno.h>
+#include <linux/export.h>
 #include <linux/ptrace.h>
 #include <linux/user.h>
 #include <linux/smp.h>
@@ -26,10 +27,10 @@
 #include <trace/syscall.h>
 #include <linux/compat.h>
 #include <linux/elf.h>
+#include <linux/context_tracking.h>
 
 #include <asm/asi.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/psrcompat.h>
 #include <asm/visasm.h>
@@ -117,6 +118,7 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
 
 	preempt_enable();
 }
+EXPORT_SYMBOL_GPL(flush_ptrace_access);
 
 static int get_from_target(struct task_struct *target, unsigned long uaddr,
 			   void *kbuf, int len)
@@ -152,7 +154,7 @@ static int regwindow64_get(struct task_struct *target,
 {
 	unsigned long rw_addr = regs->u_regs[UREG_I6];
 
-	if (test_tsk_thread_flag(current, TIF_32BIT)) {
+	if (!test_thread_64bit_stack(rw_addr)) {
 		struct reg_window32 win32;
 		int i;
 
@@ -177,7 +179,7 @@ static int regwindow64_set(struct task_struct *target,
 {
 	unsigned long rw_addr = regs->u_regs[UREG_I6];
 
-	if (test_tsk_thread_flag(current, TIF_32BIT)) {
+	if (!test_thread_64bit_stack(rw_addr)) {
 		struct reg_window32 win32;
 		int i;
 
@@ -969,16 +971,19 @@ struct fps {
 	unsigned long fsr;
 };
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+		 unsigned long addr, unsigned long data)
 {
 	const struct user_regset_view *view = task_user_regset_view(current);
 	unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
 	struct pt_regs __user *pregs;
 	struct fps __user *fps;
+	void __user *addr2p;
 	int ret;
 
-	pregs = (struct pt_regs __user *) (unsigned long) addr;
-	fps = (struct fps __user *) (unsigned long) addr;
+	pregs = (struct pt_regs __user *) addr;
+	fps = (struct fps __user *) addr;
+	addr2p = (void __user *) addr2;
 
 	switch (request) {
 	case PTRACE_PEEKUSR:
@@ -1029,8 +1034,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
 	case PTRACE_READTEXT:
 	case PTRACE_READDATA:
-		ret = ptrace_readdata(child, addr,
-				      (char __user *)addr2, data);
+		ret = ptrace_readdata(child, addr, addr2p, data);
 		if (ret == data)
 			ret = 0;
 		else if (ret >= 0)
@@ -1039,8 +1043,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 
 	case PTRACE_WRITETEXT:
 	case PTRACE_WRITEDATA:
-		ret = ptrace_writedata(child, (char __user *) addr2,
-				       addr, data);
+		ret = ptrace_writedata(child, addr2p, addr, data);
 		if (ret == data)
 			ret = 0;
 		else if (ret >= 0)
@@ -1062,7 +1065,10 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs)
 	int ret = 0;
 
 	/* do the secure computing check first */
-	secure_computing(regs->u_regs[UREG_G1]);
+	secure_computing_strict(regs->u_regs[UREG_G1]);
+
+	if (test_thread_flag(TIF_NOHZ))
+		user_exit();
 
 	if (test_thread_flag(TIF_SYSCALL_TRACE))
 		ret = tracehook_report_syscall_entry(regs);
@@ -1070,34 +1076,31 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs)
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_enter(regs, regs->u_regs[UREG_G1]);
 
-	if (unlikely(current->audit_context) && !ret)
-		audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
-				     AUDIT_ARCH_SPARC :
-				     AUDIT_ARCH_SPARC64),
-				    regs->u_regs[UREG_G1],
-				    regs->u_regs[UREG_I0],
-				    regs->u_regs[UREG_I1],
-				    regs->u_regs[UREG_I2],
-				    regs->u_regs[UREG_I3]);
+	audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
+			     AUDIT_ARCH_SPARC :
+			     AUDIT_ARCH_SPARC64),
+			    regs->u_regs[UREG_G1],
+			    regs->u_regs[UREG_I0],
+			    regs->u_regs[UREG_I1],
+			    regs->u_regs[UREG_I2],
+			    regs->u_regs[UREG_I3]);
 
 	return ret;
 }
 
 asmlinkage void syscall_trace_leave(struct pt_regs *regs)
 {
-	if (unlikely(current->audit_context)) {
-		unsigned long tstate = regs->tstate;
-		int result = AUDITSC_SUCCESS;
-
-		if (unlikely(tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
-			result = AUDITSC_FAILURE;
+	if (test_thread_flag(TIF_NOHZ))
+		user_exit();
 
-		audit_syscall_exit(result, regs->u_regs[UREG_I0]);
-	}
+	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
-		trace_sys_exit(regs, regs->u_regs[UREG_G1]);
+		trace_sys_exit(regs, regs->u_regs[UREG_I0]);
 
 	if (test_thread_flag(TIF_SYSCALL_TRACE))
 		tracehook_report_syscall_exit(regs, 0);
+
+	if (test_thread_flag(TIF_NOHZ))
+		user_enter();
 }