These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / parisc / kernel / ptrace.c

diff --git a/kernel/arch/parisc/kernel/ptrace.c b/kernel/arch/parisc/kernel/ptrace.c
index 9585c81..ce0b2b4 100644 (file)
--- a/kernel/arch/parisc/kernel/ptrace.c
+++ b/kernel/arch/parisc/kernel/ptrace.c
@@ -269,14 +269,19 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 
 long do_syscall_trace_enter(struct pt_regs *regs)
 {
-       long ret = 0;
-
        /* Do the secure computing check first. */
        secure_computing_strict(regs->gr[20]);
 
        if (test_thread_flag(TIF_SYSCALL_TRACE) &&
-           tracehook_report_syscall_entry(regs))
-               ret = -1L;
+           tracehook_report_syscall_entry(regs)) {
+               /*
+                * Tracing decided this syscall should not happen or the
+                * debugger stored an invalid system call number. Skip
+                * the system call and the system call restart handling.
+                */
+               regs->gr[20] = -1UL;
+               goto out;
+       }
 
 #ifdef CONFIG_64BIT
        if (!is_compat_task())
@@ -290,7 +295,8 @@ long do_syscall_trace_enter(struct pt_regs *regs)
                        regs->gr[24] & 0xffffffff,
                        regs->gr[23] & 0xffffffff);
 
-       return ret ? : regs->gr[20];
+out:
+       return regs->gr[20];
 }
 
 void do_syscall_trace_exit(struct pt_regs *regs)