[AUDIT] Don't allow ptrace to fool auditing, log arch of audited syscalls.

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / s390 / kernel / ptrace.c

diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 647233c02fc80c2804ced2704dab754b735d1959..2d546c67f7c35d0de0e2e7740af6e84ce8ccd2f7 100644 (file)
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -711,18 +711,13 @@ out:
 asmlinkage void
 syscall_trace(struct pt_regs *regs, int entryexit)
 {
-       if (unlikely(current->audit_context)) {
-               if (!entryexit)
-                       audit_syscall_entry(current, regs->gprs[2],
-                                           regs->orig_gpr2, regs->gprs[3],
-                                           regs->gprs[4], regs->gprs[5]);
-               else
-                       audit_syscall_exit(current, regs->gprs[2]);
-       }
+       if (unlikely(current->audit_context) && entryexit)
+               audit_syscall_exit(current, AUDITSC_RESULT(regs->gprs[2]), regs->gprs[2]);
+
        if (!test_thread_flag(TIF_SYSCALL_TRACE))
-               return;
+               goto out;
        if (!(current->ptrace & PT_PTRACED))
-               return;
+               goto out;
        ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
                                 ? 0x80 : 0));
 
@@ -735,4 +730,10 @@ syscall_trace(struct pt_regs *regs, int entryexit)
                send_sig(current->exit_code, current, 1);
                current->exit_code = 0;
        }
+ out:
+       if (unlikely(current->audit_context) && !entryexit)
+               audit_syscall_entry(current, 
+                                   test_thread_flag(TIF_31BIT)?AUDIT_ARCH_S390:AUDIT_ARCH_S390X,
+                                   regs->gprs[2], regs->orig_gpr2, regs->gprs[3],
+                                   regs->gprs[4], regs->gprs[5]);
 }